Problem after problem. Bonnie will not find gears
03-03-2007, 09:15 PM
#21
RIP
True Car Nut
While doing more research on your problem, I came across this TSB that might apply.
A/T - Grinding Noise/No Vehicle Movement in 'D' or 'R'
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 03-07-30-017
Date: May, 2003
TECHNICAL
Subject:
Grind Noise or No Vehicle Movement when Shifting into Drive or Reverse (Inspect Transaxle, Replace Various Transaxle Components)
Models:
1999-2002 Buick Century, LeSabre, Park Avenue
2002 Buick Rendezvous
1999-2002 Chevrolet Monte Carlo, Venture
2000-2002 Chevrolet Impala
1999-2002 Oldsmobile Intrigue, Silhouette
1999-2002 Pontiac Bonneville, Grand Prix, Montana
2001-2002 Pontiac Aztek
with Transaxle Auto 4-SPD, 4T65-E (RPO MN3)
Condition
Some customers may comment on a grinding noise when shifting into DRIVE or REVERSE or the vehicle will not move in DRIVE or REVERSE.
Correction
Important:
^ If the vehicle DOES NOT exhibit a grinding condition but DOES exhibit shifting concerns, refer to Corporate Bulletin # 00-07-30-002.
^ When servicing the transaxle side cover gasket, refer to Corporate Bulletin # 01-07-30-032.
^ When servicing the valve body spacer plate and/or gasket, refer to informational Corporate Bulletin # 02-07-30-014.
^ When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
Follow the service procedure below for diagnosis and correction of the grinding noise condition.
Important: If metallic debris is found on the transaxle pan magnet, the transaxle must be completely disassembled and cleaned. Failure to properly clean the transaxle case and internal components may lead to additional unnecessary repeat repairs.
1. Remove the transaxle oil pan and inspect the magnet in the bottom of the pan for metal debris. Refer to SI Document ID # 414136.
2. Remove the transaxle from the vehicle. Refer to the appropriate SI document.
Important:
^ Inspect all the transaxle components for damage or wear. Replace all damaged or worn components. The parts listed below should be sufficient to correct this concern.
^ This condition does not normally require replacement or reconditioning of the transaxle completely unless there is extensive damage. Components such as clutches, valve body and torque convertors WILL NOT require replacement to correct this condition.
3. Disassemble the transaxle. Refer to the Transmission Overhaul procedure in Unit Repair, SI Document ID # 633950.
^ (66
Input Sun Gear, P/N 24204098
^ (672) Input Complete Carrier Assembly, P/N 24204430
^ (674) Input/Reaction Carrier Thrust Bearing Assembly, P/N 24205127
^ (675) Reaction Complete Carrier Assembly, P/N 8646504
^ (676) Reaction Carrier/Sun Gear Thrust Bearing Assembly, P/N 8649353
4. Replace the parts listed above to correct this condition. Refer to Unit Repair Manual, Transmission Overhaul procedure, SI Document ID # 417561; Input and Third Sprag Clutches Disassemble, SI Document ID # 38901; and Input and Third Sprag Clutches Assemble, SI Document ID # 60415.
5. When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 03-07-30-017
Date: May, 2003
TECHNICAL
Subject:
Grind Noise or No Vehicle Movement when Shifting into Drive or Reverse (Inspect Transaxle, Replace Various Transaxle Components)
Models:
1999-2002 Buick Century, LeSabre, Park Avenue
2002 Buick Rendezvous
1999-2002 Chevrolet Monte Carlo, Venture
2000-2002 Chevrolet Impala
1999-2002 Oldsmobile Intrigue, Silhouette
1999-2002 Pontiac Bonneville, Grand Prix, Montana
2001-2002 Pontiac Aztek
with Transaxle Auto 4-SPD, 4T65-E (RPO MN3)
Condition
Some customers may comment on a grinding noise when shifting into DRIVE or REVERSE or the vehicle will not move in DRIVE or REVERSE.
Correction
Important:
^ If the vehicle DOES NOT exhibit a grinding condition but DOES exhibit shifting concerns, refer to Corporate Bulletin # 00-07-30-002.
^ When servicing the transaxle side cover gasket, refer to Corporate Bulletin # 01-07-30-032.
^ When servicing the valve body spacer plate and/or gasket, refer to informational Corporate Bulletin # 02-07-30-014.
^ When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
Follow the service procedure below for diagnosis and correction of the grinding noise condition.
Important: If metallic debris is found on the transaxle pan magnet, the transaxle must be completely disassembled and cleaned. Failure to properly clean the transaxle case and internal components may lead to additional unnecessary repeat repairs.
1. Remove the transaxle oil pan and inspect the magnet in the bottom of the pan for metal debris. Refer to SI Document ID # 414136.
2. Remove the transaxle from the vehicle. Refer to the appropriate SI document.
Important:
^ Inspect all the transaxle components for damage or wear. Replace all damaged or worn components. The parts listed below should be sufficient to correct this concern.
^ This condition does not normally require replacement or reconditioning of the transaxle completely unless there is extensive damage. Components such as clutches, valve body and torque convertors WILL NOT require replacement to correct this condition.
3. Disassemble the transaxle. Refer to the Transmission Overhaul procedure in Unit Repair, SI Document ID # 633950.
^ (66
Input Sun Gear, P/N 24204098^ (672) Input Complete Carrier Assembly, P/N 24204430
^ (674) Input/Reaction Carrier Thrust Bearing Assembly, P/N 24205127
^ (675) Reaction Complete Carrier Assembly, P/N 8646504
^ (676) Reaction Carrier/Sun Gear Thrust Bearing Assembly, P/N 8649353
4. Replace the parts listed above to correct this condition. Refer to Unit Repair Manual, Transmission Overhaul procedure, SI Document ID # 417561; Input and Third Sprag Clutches Disassemble, SI Document ID # 38901; and Input and Third Sprag Clutches Assemble, SI Document ID # 60415.
5. When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
03-03-2007, 11:25 PM
#22
Member
Posts like a V-Tak
Thread Starter
Join Date: Dec 2005
Posts: 70
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the time and trouble everyone. This sounds plausible to me Archon, but hey, what do I know? Only enough to get myself into deep doo doo. My only question to this suggesiton/possibility would be… Would the car still exhibit the no “kicking”/mild ”lurching” into gear symptom when I put it into drive or reverse if the problem was the transaxle? ie the type of normal behaviour when shifting into gear whereas you can feel the car move into gear. Thanks again
Originally Posted by Archon
While doing more research on your problem, I came across this TSB that might apply.
A/T - Grinding Noise/No Vehicle Movement in 'D' or 'R'
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 03-07-30-017
Date: May, 2003
TECHNICAL
Subject:
Grind Noise or No Vehicle Movement when Shifting into Drive or Reverse (Inspect Transaxle, Replace Various Transaxle Components)
Models:
1999-2002 Buick Century, LeSabre, Park Avenue
2002 Buick Rendezvous
1999-2002 Chevrolet Monte Carlo, Venture
2000-2002 Chevrolet Impala
1999-2002 Oldsmobile Intrigue, Silhouette
1999-2002 Pontiac Bonneville, Grand Prix, Montana
2001-2002 Pontiac Aztek
with Transaxle Auto 4-SPD, 4T65-E (RPO MN3)
Condition
Some customers may comment on a grinding noise when shifting into DRIVE or REVERSE or the vehicle will not move in DRIVE or REVERSE.
Correction
Important:
^ If the vehicle DOES NOT exhibit a grinding condition but DOES exhibit shifting concerns, refer to Corporate Bulletin # 00-07-30-002.
^ When servicing the transaxle side cover gasket, refer to Corporate Bulletin # 01-07-30-032.
^ When servicing the valve body spacer plate and/or gasket, refer to informational Corporate Bulletin # 02-07-30-014.
^ When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
Follow the service procedure below for diagnosis and correction of the grinding noise condition.
Important: If metallic debris is found on the transaxle pan magnet, the transaxle must be completely disassembled and cleaned. Failure to properly clean the transaxle case and internal components may lead to additional unnecessary repeat repairs.
1. Remove the transaxle oil pan and inspect the magnet in the bottom of the pan for metal debris. Refer to SI Document ID # 414136.
2. Remove the transaxle from the vehicle. Refer to the appropriate SI document.
Important:
^ Inspect all the transaxle components for damage or wear. Replace all damaged or worn components. The parts listed below should be sufficient to correct this concern.
^ This condition does not normally require replacement or reconditioning of the transaxle completely unless there is extensive damage. Components such as clutches, valve body and torque convertors WILL NOT require replacement to correct this condition.
3. Disassemble the transaxle. Refer to the Transmission Overhaul procedure in Unit Repair, SI Document ID # 633950.
^ (66 Input Sun Gear, P/N 24204098
^ (672) Input Complete Carrier Assembly, P/N 24204430
^ (674) Input/Reaction Carrier Thrust Bearing Assembly, P/N 24205127
^ (675) Reaction Complete Carrier Assembly, P/N 8646504
^ (676) Reaction Carrier/Sun Gear Thrust Bearing Assembly, P/N 8649353
4. Replace the parts listed above to correct this condition. Refer to Unit Repair Manual, Transmission Overhaul procedure, SI Document ID # 417561; Input and Third Sprag Clutches Disassemble, SI Document ID # 38901; and Input and Third Sprag Clutches Assemble, SI Document ID # 60415.
5. When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 03-07-30-017
Date: May, 2003
TECHNICAL
Subject:
Grind Noise or No Vehicle Movement when Shifting into Drive or Reverse (Inspect Transaxle, Replace Various Transaxle Components)
Models:
1999-2002 Buick Century, LeSabre, Park Avenue
2002 Buick Rendezvous
1999-2002 Chevrolet Monte Carlo, Venture
2000-2002 Chevrolet Impala
1999-2002 Oldsmobile Intrigue, Silhouette
1999-2002 Pontiac Bonneville, Grand Prix, Montana
2001-2002 Pontiac Aztek
with Transaxle Auto 4-SPD, 4T65-E (RPO MN3)
Condition
Some customers may comment on a grinding noise when shifting into DRIVE or REVERSE or the vehicle will not move in DRIVE or REVERSE.
Correction
Important:
^ If the vehicle DOES NOT exhibit a grinding condition but DOES exhibit shifting concerns, refer to Corporate Bulletin # 00-07-30-002.
^ When servicing the transaxle side cover gasket, refer to Corporate Bulletin # 01-07-30-032.
^ When servicing the valve body spacer plate and/or gasket, refer to informational Corporate Bulletin # 02-07-30-014.
^ When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
Follow the service procedure below for diagnosis and correction of the grinding noise condition.
Important: If metallic debris is found on the transaxle pan magnet, the transaxle must be completely disassembled and cleaned. Failure to properly clean the transaxle case and internal components may lead to additional unnecessary repeat repairs.
1. Remove the transaxle oil pan and inspect the magnet in the bottom of the pan for metal debris. Refer to SI Document ID # 414136.
2. Remove the transaxle from the vehicle. Refer to the appropriate SI document.
Important:
^ Inspect all the transaxle components for damage or wear. Replace all damaged or worn components. The parts listed below should be sufficient to correct this concern.
^ This condition does not normally require replacement or reconditioning of the transaxle completely unless there is extensive damage. Components such as clutches, valve body and torque convertors WILL NOT require replacement to correct this condition.
3. Disassemble the transaxle. Refer to the Transmission Overhaul procedure in Unit Repair, SI Document ID # 633950.
^ (66
Input Sun Gear, P/N 24204098^ (672) Input Complete Carrier Assembly, P/N 24204430
^ (674) Input/Reaction Carrier Thrust Bearing Assembly, P/N 24205127
^ (675) Reaction Complete Carrier Assembly, P/N 8646504
^ (676) Reaction Carrier/Sun Gear Thrust Bearing Assembly, P/N 8649353
4. Replace the parts listed above to correct this condition. Refer to Unit Repair Manual, Transmission Overhaul procedure, SI Document ID # 417561; Input and Third Sprag Clutches Disassemble, SI Document ID # 38901; and Input and Third Sprag Clutches Assemble, SI Document ID # 60415.
5. When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
03-03-2007, 11:44 PM
#23
Member
Posts like a V-Tak
Thread Starter
Join Date: Dec 2005
Posts: 70
Likes: 0
Received 0 Likes
on
0 Posts
TSB
Where can I view the TSB'* you refer to Archon? Namely Corporate Bulletin # 00-07-30-002
Originally Posted by Archon
While doing more research on your problem, I came across this TSB that might apply.
A/T - Grinding Noise/No Vehicle Movement in 'D' or 'R'
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 03-07-30-017
Date: May, 2003
TECHNICAL
Subject:
Grind Noise or No Vehicle Movement when Shifting into Drive or Reverse (Inspect Transaxle, Replace Various Transaxle Components)
Models:
1999-2002 Buick Century, LeSabre, Park Avenue
2002 Buick Rendezvous
1999-2002 Chevrolet Monte Carlo, Venture
2000-2002 Chevrolet Impala
1999-2002 Oldsmobile Intrigue, Silhouette
1999-2002 Pontiac Bonneville, Grand Prix, Montana
2001-2002 Pontiac Aztek
with Transaxle Auto 4-SPD, 4T65-E (RPO MN3)
Condition
Some customers may comment on a grinding noise when shifting into DRIVE or REVERSE or the vehicle will not move in DRIVE or REVERSE.
Correction
Important:
^ If the vehicle DOES NOT exhibit a grinding condition but DOES exhibit shifting concerns, refer to Corporate Bulletin # 00-07-30-002.
^ When servicing the transaxle side cover gasket, refer to Corporate Bulletin # 01-07-30-032.
^ When servicing the valve body spacer plate and/or gasket, refer to informational Corporate Bulletin # 02-07-30-014.
^ When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
Follow the service procedure below for diagnosis and correction of the grinding noise condition.
Important: If metallic debris is found on the transaxle pan magnet, the transaxle must be completely disassembled and cleaned. Failure to properly clean the transaxle case and internal components may lead to additional unnecessary repeat repairs.
1. Remove the transaxle oil pan and inspect the magnet in the bottom of the pan for metal debris. Refer to SI Document ID # 414136.
2. Remove the transaxle from the vehicle. Refer to the appropriate SI document.
Important:
^ Inspect all the transaxle components for damage or wear. Replace all damaged or worn components. The parts listed below should be sufficient to correct this concern.
^ This condition does not normally require replacement or reconditioning of the transaxle completely unless there is extensive damage. Components such as clutches, valve body and torque convertors WILL NOT require replacement to correct this condition.
3. Disassemble the transaxle. Refer to the Transmission Overhaul procedure in Unit Repair, SI Document ID # 633950.
^ (66 Input Sun Gear, P/N 24204098
^ (672) Input Complete Carrier Assembly, P/N 24204430
^ (674) Input/Reaction Carrier Thrust Bearing Assembly, P/N 24205127
^ (675) Reaction Complete Carrier Assembly, P/N 8646504
^ (676) Reaction Carrier/Sun Gear Thrust Bearing Assembly, P/N 8649353
4. Replace the parts listed above to correct this condition. Refer to Unit Repair Manual, Transmission Overhaul procedure, SI Document ID # 417561; Input and Third Sprag Clutches Disassemble, SI Document ID # 38901; and Input and Third Sprag Clutches Assemble, SI Document ID # 60415.
5. When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 03-07-30-017
Date: May, 2003
TECHNICAL
Subject:
Grind Noise or No Vehicle Movement when Shifting into Drive or Reverse (Inspect Transaxle, Replace Various Transaxle Components)
Models:
1999-2002 Buick Century, LeSabre, Park Avenue
2002 Buick Rendezvous
1999-2002 Chevrolet Monte Carlo, Venture
2000-2002 Chevrolet Impala
1999-2002 Oldsmobile Intrigue, Silhouette
1999-2002 Pontiac Bonneville, Grand Prix, Montana
2001-2002 Pontiac Aztek
with Transaxle Auto 4-SPD, 4T65-E (RPO MN3)
Condition
Some customers may comment on a grinding noise when shifting into DRIVE or REVERSE or the vehicle will not move in DRIVE or REVERSE.
Correction
Important:
^ If the vehicle DOES NOT exhibit a grinding condition but DOES exhibit shifting concerns, refer to Corporate Bulletin # 00-07-30-002.
^ When servicing the transaxle side cover gasket, refer to Corporate Bulletin # 01-07-30-032.
^ When servicing the valve body spacer plate and/or gasket, refer to informational Corporate Bulletin # 02-07-30-014.
^ When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
Follow the service procedure below for diagnosis and correction of the grinding noise condition.
Important: If metallic debris is found on the transaxle pan magnet, the transaxle must be completely disassembled and cleaned. Failure to properly clean the transaxle case and internal components may lead to additional unnecessary repeat repairs.
1. Remove the transaxle oil pan and inspect the magnet in the bottom of the pan for metal debris. Refer to SI Document ID # 414136.
2. Remove the transaxle from the vehicle. Refer to the appropriate SI document.
Important:
^ Inspect all the transaxle components for damage or wear. Replace all damaged or worn components. The parts listed below should be sufficient to correct this concern.
^ This condition does not normally require replacement or reconditioning of the transaxle completely unless there is extensive damage. Components such as clutches, valve body and torque convertors WILL NOT require replacement to correct this condition.
3. Disassemble the transaxle. Refer to the Transmission Overhaul procedure in Unit Repair, SI Document ID # 633950.
^ (66
Input Sun Gear, P/N 24204098^ (672) Input Complete Carrier Assembly, P/N 24204430
^ (674) Input/Reaction Carrier Thrust Bearing Assembly, P/N 24205127
^ (675) Reaction Complete Carrier Assembly, P/N 8646504
^ (676) Reaction Carrier/Sun Gear Thrust Bearing Assembly, P/N 8649353
4. Replace the parts listed above to correct this condition. Refer to Unit Repair Manual, Transmission Overhaul procedure, SI Document ID # 417561; Input and Third Sprag Clutches Disassemble, SI Document ID # 38901; and Input and Third Sprag Clutches Assemble, SI Document ID # 60415.
5. When servicing or replacing the transaxle resulting from this condition, the transaxle cooler MUST be flushed. Refer to informational Corporate Bulletin # 02-07-30-052.
03-04-2007, 01:04 AM
#24
RIP
True Car Nut
Unfortunately, I couldn't find that specific bulletin. I did find that number with the suffix of "B" which I assume means that it'* been updated a couple of times. It has to do the the pressure control solenoid that can produce harsh shifts. Even though they cross-referenced it, I'm not sure how it applies. This is what I found.
A/T - 4T65E Harsh Shifts/Shudders/Slips/DTC'* Set
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 0O-07-30-002B
Date: July, 2002
TECHNICAL
Subject:
Slips, Harsh Upshift or Garage Shifts, Launch Shudders, Flares, Erratic Shifts and Intermittent Concerns, DTC P1811 or P0748 Set (Replace Pressure Control Solenoid Valve Assembly)
Models:
1997-1999 Buick Riviera
1997-2002 Buick Park Avenue
1998-2002 Buick LeSabre
1999-2002 Buick Regal
2000-2002 Buick Century
2002 Buick Rendezvous
1997-2001 Chevrolet Lumina
1997-2002 Chevrolet Monte Carlo
1999-2002 Chevrolet Venture
2000-2002 Chevrolet Impala
1997-1999 Oldsmobile Eighty Eight
1997-2002 Oldsmobile Silhouette
1998-2002 Oldsmobile Intrigue
2001-2002 Oldsmobile Aurora (3.5L)
1997-2002 Pontiac Bonneville, Grand Prix
1999-2002 Pontiac Transport/Montana
2001-2002 Pontiac Aztek
with Hydra-Matic 4T65-E (RPOs MN3, MN7, M15, M76)
This bulletin is being revised to add additional models and model years. Please discard Corporate Bulletin Number 00-07-30-002A (Section 07 - Transmission/Transaxle).
Condition
Some owners of the above vehicles with a HydraMatic 4T65-E transaxle may comment on harsh upshifts or harsh garage shifts, soft shifts, shudders on hard acceleration, or shifts erratic. These conditions may appear intermittently or set a DTC P1811 or P0748. During diagnosis, a low or high line pressure (actual versus desired) may be observed.
Cause
The above condition may be due to any one of the following which may affect line pressure output:
^ Sediment inside the pressure control (PC) solenoid valve, causing the PC solenoid valve to mechanically bind.
^ Sediment in the valve body, causing the torque signal regulator valve to stick.
^ Incorrect transaxle oil level.
Correction
Important: Any of the above conditions may be intermittent, therefore, this test should be performed at least three times.
Refer to the Line Pressure Check Procedure in SI, along with the Line Pressure Specification Table shown, to determine if actual versus desired pressures are within the values specified. The Scan Tool is only able to control the PC solenoid valve in PARK and NEUTRAL with the vehicle stopped. This protects the clutches from extremely high or low pressures in DRIVE or REVERSE ranges.
Refer to the Line Pressure Specification Table. The pressures in the table assume a temperature of 70°C. The pressure will vary with a change in temperature.
If the actual versus desired pressures are not within the values specified, clean the valve body and replace the PC solenoid valve, if necessary.
Check the PC solenoid valve actual versus desired pressures to verify the new PC solenoid valve is responding correctly.
Refer to the Automatic Transaxle Section of the Service Manual for the proper repair procedure.
Line Pressure Check Procedure Tools Required
J 21867 Universal Pressure Gauge Set
Important: Before performing a line pressure check, verify that the pressure control (PC) solenoid valve is receiving the correct electrical signal from the PCM.
1. Install a Scan Tool.
Caution: Keep the brakes applied at all times in order to prevent unexpected vehicle motion. Personal injury may result it the vehicle moves unexpectedly.
2. Start the engine and set the parking brake.
3. Check for a stored Diagnostic Trouble Code (DTC).
4. Repair the vehicle, if necessary.
5. Check the fluid level. Refer to the Transmission Fluid Checking Procedure.
6. Check the manual linkage for proper adjustment.
7. Turn the engine OFF. Remove the oil pressure test hole plug and install the J 21867.
8. Put the gear selector in PARK range and set the parking brake.
9. Start the engine and allow the engine to warm up at idle.
Notice: Total test running time should not be longer than two minutes, or else transmission damage could occur.
10. Access the PC solenoid valve control test on the Scan Tool.
11. Increase the PC solenoid as shown actual current from 0.0 to 1.0 amps in 0.1 amp increments. Allow the pressure to stabilize for five seconds after each pressure change. Read the corresponding line pressure on the J 21867.
12. Refer to the Line Pressure specification table. Compare the data to the table.
13. If pressure readings differ greatly from the table, refer to Incorrect Line Pressure.
14. Remove the J 21867.
15. Apply sealant, P/N 12345382 (in Canada, P/N 10953489), to the oil pressure test hole plug.
Notice: Refer to Fastener Notice in Cautions and Notices.
16. Install the oil pressure test hole plug.
Tighten
Tighten the oil pressure test hole plug to 12 N.m (106 lb in).
File In Section: 07 - Transmission/Transaxle
Bulletin No.: 0O-07-30-002B
Date: July, 2002
TECHNICAL
Subject:
Slips, Harsh Upshift or Garage Shifts, Launch Shudders, Flares, Erratic Shifts and Intermittent Concerns, DTC P1811 or P0748 Set (Replace Pressure Control Solenoid Valve Assembly)
Models:
1997-1999 Buick Riviera
1997-2002 Buick Park Avenue
1998-2002 Buick LeSabre
1999-2002 Buick Regal
2000-2002 Buick Century
2002 Buick Rendezvous
1997-2001 Chevrolet Lumina
1997-2002 Chevrolet Monte Carlo
1999-2002 Chevrolet Venture
2000-2002 Chevrolet Impala
1997-1999 Oldsmobile Eighty Eight
1997-2002 Oldsmobile Silhouette
1998-2002 Oldsmobile Intrigue
2001-2002 Oldsmobile Aurora (3.5L)
1997-2002 Pontiac Bonneville, Grand Prix
1999-2002 Pontiac Transport/Montana
2001-2002 Pontiac Aztek
with Hydra-Matic 4T65-E (RPOs MN3, MN7, M15, M76)
This bulletin is being revised to add additional models and model years. Please discard Corporate Bulletin Number 00-07-30-002A (Section 07 - Transmission/Transaxle).
Condition
Some owners of the above vehicles with a HydraMatic 4T65-E transaxle may comment on harsh upshifts or harsh garage shifts, soft shifts, shudders on hard acceleration, or shifts erratic. These conditions may appear intermittently or set a DTC P1811 or P0748. During diagnosis, a low or high line pressure (actual versus desired) may be observed.
Cause
The above condition may be due to any one of the following which may affect line pressure output:
^ Sediment inside the pressure control (PC) solenoid valve, causing the PC solenoid valve to mechanically bind.
^ Sediment in the valve body, causing the torque signal regulator valve to stick.
^ Incorrect transaxle oil level.
Correction
Important: Any of the above conditions may be intermittent, therefore, this test should be performed at least three times.
Refer to the Line Pressure Check Procedure in SI, along with the Line Pressure Specification Table shown, to determine if actual versus desired pressures are within the values specified. The Scan Tool is only able to control the PC solenoid valve in PARK and NEUTRAL with the vehicle stopped. This protects the clutches from extremely high or low pressures in DRIVE or REVERSE ranges.
Refer to the Line Pressure Specification Table. The pressures in the table assume a temperature of 70°C. The pressure will vary with a change in temperature.
If the actual versus desired pressures are not within the values specified, clean the valve body and replace the PC solenoid valve, if necessary.
Check the PC solenoid valve actual versus desired pressures to verify the new PC solenoid valve is responding correctly.
Refer to the Automatic Transaxle Section of the Service Manual for the proper repair procedure.
Line Pressure Check Procedure Tools Required
J 21867 Universal Pressure Gauge Set
Important: Before performing a line pressure check, verify that the pressure control (PC) solenoid valve is receiving the correct electrical signal from the PCM.
1. Install a Scan Tool.
Caution: Keep the brakes applied at all times in order to prevent unexpected vehicle motion. Personal injury may result it the vehicle moves unexpectedly.
2. Start the engine and set the parking brake.
3. Check for a stored Diagnostic Trouble Code (DTC).
4. Repair the vehicle, if necessary.
5. Check the fluid level. Refer to the Transmission Fluid Checking Procedure.
6. Check the manual linkage for proper adjustment.
7. Turn the engine OFF. Remove the oil pressure test hole plug and install the J 21867.
8. Put the gear selector in PARK range and set the parking brake.
9. Start the engine and allow the engine to warm up at idle.
Notice: Total test running time should not be longer than two minutes, or else transmission damage could occur.
10. Access the PC solenoid valve control test on the Scan Tool.
11. Increase the PC solenoid as shown actual current from 0.0 to 1.0 amps in 0.1 amp increments. Allow the pressure to stabilize for five seconds after each pressure change. Read the corresponding line pressure on the J 21867.
12. Refer to the Line Pressure specification table. Compare the data to the table.
13. If pressure readings differ greatly from the table, refer to Incorrect Line Pressure.
14. Remove the J 21867.
15. Apply sealant, P/N 12345382 (in Canada, P/N 10953489), to the oil pressure test hole plug.
Notice: Refer to Fastener Notice in Cautions and Notices.
16. Install the oil pressure test hole plug.
Tighten
Tighten the oil pressure test hole plug to 12 N.m (106 lb in).
Thread
Thread Starter
Forum
Replies
Last Post
repinS
General GM Chat
12
11-26-2004 10:35 AM
killer_cr80r
Lounge
5
06-16-2004 01:51 AM