Help with these tranny quirks - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-16-2004, 04:12 PM   #1
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Default Help with these tranny quirks

I've got these tranny issues:
Transmission shifts into third funny
TCC shudder
SES light during high speed accel (approximate time of 2-3 shift)

Are they related to the same problem, possibly?
I'm gonna go get the SES code now.
Unfortunately, I'm out of the rebuilder'* warranty.
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Old 01-16-2004, 04:38 PM   #2
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I've got all these codes:
23, 43, 54, 57, 58, and I swear I saw a 47, but it'* not listed in the codes list.

I know what the rest of them are listed as. I assume the one that comes on that I mentioned is 57, Boost control problem. I am currently using the boost solenoid bypass trick.

23 Low IAT indicated, 54 EGR fault (#2), and 58 PASS key fuel enable circuit seem to be random fluke type errors.

43 is Electronic spark control ciruit. Would that be the ECM trying to cut the spark because of "drivetrain abuse"?

Did I see a 47, or was my counting off?
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Old 01-16-2004, 05:17 PM   #3
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if you have a bypass service engine soon light, put it back to normal. a ses light = limp mode = not so well performance.

Your trans issue sounds like a torque converter lock up issue. If it gave you a tcc code, thats most likley a slip code and should be serviced. Have you ever had your trans serviced? If you have over 75-80K its risky to flush n fill for the first time.. Think of your auto transmission like a glass of iced tea... you stur it up to mix up the tea mix... The fluid in your trans does that with the tiny metal particles that wear due to shifting.. If enough time goes by all that fluid is mucky black and not all of it is going to come out with a service.. its going to get stuck up in your valve body and cause issues shifting. Thats why if your hard on your trans every 30k its service time...Im so neurotic i do it every 20k.

hope this helps
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Old 01-16-2004, 05:46 PM   #4
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The transmission wsa rebuilt 11k miles ago. But it only had a 6 month warranty..

If I put the bypass back to normal, it dumps so much boost, I have less power than before.
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Old 01-16-2004, 06:03 PM   #5
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i dont know how i posted twice.. anyway.. that sucks about the warranty.. if you bitch loud enough, maybe he will work with you, maybe half for the fix instead of full. you know what i mean..

as for the ses light boost bypass, you cant have your cake and eat it too.. no bypass no check engine light. bypass and ses light..... its your ride..do what you want man.
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Old 01-16-2004, 07:20 PM   #6
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Anyone have ideas what specifically it might be? I know it'* tough to diagnose through the internet. I have no TCC code.

It has been mentioned a long time ago that a bad harmonic balancer can cause some false KR. I have a rattle that someone noted could be a bad balancer. Could that account for the Spark Control code(43)?
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Old 01-16-2004, 07:59 PM   #7
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if there is a rip in the balancer that'* the problem.If not you want to check your module located under the coils.thats spark control related. But i am assuming you checked your plugs and wires?If it is your balancer, i recommend changing the crank sensor while you have it apart.
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Old 01-17-2004, 02:55 PM   #8
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Let me describe the "funny shifting"

Holding the gas pedal at a constant point to accelerate, it feels like it lets go of second, but won't grab third for 3-4 seconds unless I back off or press harder to get back in second. Feels like my old Buick when second gear disappeared. I still have all gears, TCC even locks up in third when above 43 mph. It seems to behave better when in Perform Shift.
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Old 01-17-2004, 03:08 PM   #9
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Quote:
Originally Posted by L67Riviera
if you have a bypass service engine soon light, put it back to normal. a ses light = limp mode = not so well performance.
An SES light won't put you in Limp mode unless something is majorly wrong. Most indications on the SES do not do this.

The bypass he'* talking about is the boost wastegate, not the SES.
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Old 01-17-2004, 05:28 PM   #10
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Default Re: Help with these tranny quirks

Quote:
Originally Posted by jwikoff99
I've got these tranny issues:
Transmission shifts into third funny
TCC shudder
SES light during high speed accel (approximate time of 2-3 shift)

Are they related to the same problem, possibly?
I'm gonna go get the SES code now.
Unfortunately, I'm out of the rebuilder'* warranty.
HARSH 1-2, 2-3, AND 3-4 UPSHIFTS (REPAIR ACC. VALVES) #47-71-02 - (02/21/1994)
REVISION: 03/01/94


THIS BULLETIN IS BEING REVISED TO INCLUDE U VAN APPLICATIONS.

SUBJECT: HARSH 1-2, 2-3 AND 3-4 UPSHIFTS (REPAIR ACCUMULATOR VALVE(*) IN CONTROL VALVE BODY)

MODELS: 1991 BUICK REATTA 1991-93 BUICK RIVIERA 1991-94 BUICK PARK AVENUE AND REGAL 1992-94 BUICK LE SABRE 1994 BUICK CENTURY AND SKYLARK 1991-93 CADILLAC ELDORADO, SEVILLE, SIXTY SPECIAL AND FLEETWOOD (FWD) 1991-94 CADILLAC DE VILLE 1991-94 CHEVROLET LUMINA 1994 CHEVROLET BERETTA AND CORSICA 1992-94 CHEVROLET LUMINA APV 1991-92 OLDSMOBILE TORONADO AND TROFEO 1991-94 OLDSMOBILE NINETY EIGHT AND CUTLASS SUPREME 1992-94 OLDSMOBILE EIGHTY EIGHT AND SILHOUETTE 1994 OLDSMOBILE CUTLASS CIERA AND ACHIEVA 1992-94 PONTIAC BONNEVILLE AND TRANS SPORT 1991-94 PONTIAC GRAND PRIX 1994 PONTIAC GRAND AM

TRANSAXLE APPLICATIONS: HYDRA-MATIC 4T60-E (RPO M13)

CONDITION:

SOME OWNERS MAY EXPERIENCE A HARSH 1-2, 2-3 OR 3-4 UPSHIFT CONDITION. THE HARSH UPSHIFT CONDITION WILL USUALLY BE NOTICEABLE DURING A LIGHT TO MEDIUM THROTTLE UPSHIFT.

CAUSE: THE HARSH UPSHIFT CONDITION MAY BE CAUSED BY:

O A MISSING OR LOOSE ACCUMULATOR BUSHING RETAINER.

O A METAL SHAVING (BURR) OR DEBRIS IN THE ACCUMULATOR VALVE TRAIN IN THE CONTROL VALVE BODY.

IMPORTANT: ALL 4.9L MODELS AND 3.1L MODELS 3BHW AND 4AFW HAVE A 1-2 ACCUMULATOR VALVE TRAIN AND PISTON/SPRING LINE UP THAT IS DIFFERENT FROM ALL OTHER 4T60-E MODELS. DO NOT ASSUME THAT THESE MODELS HAVE A HARSH SHIFT CONDITION DUE TO MISASSEMBLY. THE 1993 AND 1994 HYDRA-MATIC 4T60-E AUTOMATIC TRANSAXLE UNIT REPAIR SECTION 7A-5B IS INCORRECT.

CORRECTION: TO REPAIR THIS CONDITION, INSPECT THE CONTROL VALVE BODY FOR THE FOLLOWING:

O ACCUMULATOR BUSHING RETAINERS FOR BEING PRESENT AND SECURELY INSTALLED. IF A RETAINER IS MISSING, REFER TO SERVICE PART INFORMATION FOR RETAINER PART NUMBERS.

O ACCUMULATOR VALVE TRAIN IN THE CONTROL VALVE BODY FOR BINDING DUE TO BURRS OR DEBRIS. DISASSEMBLE AND CLEAN THE CONTROL VALVE BODY IF BURRS OR DEBRIS ARE FOUND.

SERVICE PART INFORMATION: THE ACCUMULATOR BUSHING RETAINER DESIGN WAS CHANGED AFTER THE START OF THE 1993 MODEL YEAR. PREVIOUS AND CURRENT DESIGN ACCUMULATOR BUSHINGS AND RETAINERS ARE NOT INTERCHANGEABLE. TO DETERMINE THE CORRECT ACCUMULATOR RETAINER BUSHING TO ORDER FOR 1993 MODEL TRANSAXLES, INSPECT ONE OF THE OTHER ACCUMULATOR BUSHING RETAINERS THAT IS PRESENT IN THE CONTROL VALVE BODY. COMPARE WITH FIGURE 2 TO DETERMINE THE CORRECT PART NUMBER TO ORDER.

+-----------------------------------------------------------+ | PART NUMBER | DESCRIPTION | MODELS | |-------------+--------------------------------+------------| | | | ALL 1991 | | 8651493 | RETAINER, ACCUMULATOR BUSHING | ALL 1992 | | | (3/PACKAGE) | EARLY 1993 | |-------------+--------------------------------+------------| | 8681510 | RETAINER, ACCUMULATOR BUSHING | LATE 1993 | | | (3/PACKAGE) | ALL 1994 | +-----------------------------------------------------------+

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION: K6570 LABOR TIME: USE PUBLISHED LABOR OPERATION TIME.

+-----------------------------------------------------+ | LEGEND FOR FIGURES 2, 3 AND 4 | |-----------------------------------------------------| | ITEM | COMPONENT DESCRIPTION | |------+----------------------------------------------| | 3 | CASE, TRANSAXLE | | 103 | BOLT, 2-1 SERVO COVER TO CASE | | 104 | COVER, 2-1 MANUAL SERVO BODY | | 105 | SEAL, SQUARE CUT (2-1 SERVO) | | 106 | CLIP, RETAINING (BOTTOM) | | 107 | SEAL, LIP | | 108 | PISTON, 2-1 MANUAL SERVO | | 109 | SPRING, 2-1 MANUAL SERVO CUSHION | | 110 | RETAINER, INT. SERVO SPRING MANUAL CUSHION | | 111 | PIN, 2-1 MANUAL APPLY | | 112 | SPRING, 2-1 MANUAL SERVO RETURN | | 113 | SEAL, O-RING | | 114 | BODY, 2-1 MANUAL SERVO | | 115 | FILTER, 2-1 SERVO | | 124 | PIPE, FORWARD SERVO APPLY | | 125 | PIPE, MANUAL SERVO APPLY | | 126 | PIPE, LUBE OIL | | 127 | CLAMP, HOSE | | 128 | HOSE, LUBE OIL | | 129 | RETAINER, LUBE PIPE CLIP | | 130 | PIPE AND WASHER ASSEMBLY | | 131 | BOLT, ACC. COVER TO CASE AND ACC. HOUSING | | 132 | COVER, ACCUMULATOR | | 133 | GASKET, ACCUMULATOR COVER | | 134 | PLATE, ACCUMULATOR SPACER | | 135 | PIN, 2-3 ACCUMULATOR | | 136 | PISTON, 1-2 AND 2-3 ACCUMULATOR | | 137 | RING, OIL SEAL ACCUMULATOR PISTON | | 138A | SPRING, 2-3 ACCUMULATOR (INNER) | | 138B | SPRING, 2-3 ACCUMULATOR (OUTER) | | 139B | SPRING, 1-2 ACCUMULATOR (INNER) | | 139C | SPRING, 1-2 ACCUMULATOR (OUTER) | | 140 | HOUSING, ACCUMULATOR | | 301 | BODY, CONTROL VALVE | | 338 | RETAINER, 1-2 ACCUMULATOR PLUG | | 339 | PLUG, 1-2 ACCUMULATOR | | 340 | SPRING, 1-2 ACCUMULATOR VALVE (PRIMARY) | | 341 | VALVE, 1-2 ACCUMULATOR (PRIMARY) | | 342 | BUSHING, 1-2 ACCUMULATOR VALVE (PRIMARY) | | 343 | VALVE, 2-3 ACCUMULATOR | | 344 | SPRING, 2-3 ACCUMULATOR VALVE | | 345 | BUSHING, 2-3 ACCUMULATOR VALVE | | 346 | PLUG, 1-2 ACCUMULATOR (SECONDARY) | | 347 | VALVE, 1-2 ACCUMULATOR (SECONDARY) | | 348 | SPRING, 1-2 ACCUMULATOR VALVE (SECONDARY) | | 349 | BUSHING, 1-2 ACCUMULATOR VALVE (SECONDARY) | | 350 | VALVE, 3-4 ACCUMULATOR | | 351 | SPRING, 3-4 ACCUMULATOR VALVE | | 352 | BUSHING, 3-4 ACCUMULATOR VALVE | | 385 | RETAINER, ACCUMULATOR VALVE BUSHING ASSEMBLY | +-----------------------------------------------------+

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

SECOND GEAR VIBRATION AT 3000- 5000 RPM (INST. SHAFT PACKAGE) #37-71-38A - (10/26/1993)
************************************************** ********************

SUBJECT: SECOND GEAR VIBRATION AT 3000-5000 RPM (INSTALL SHAFT PACKAGE)

MODELS: 1991-93 CADILLAC DEVILLE 1991-93 CADILLAC FLEETWOOD 1991-93 BUICK PARK AVENUE 1991-93 OLDSMOBILE NINETY EIGHT 1991-92 OLDSMOBILE TORONADO 1991-93 CADILLAC ELDORADO 1991-93 BUICK RIVIERA 1991-93 PONTIAC BONNEVILLE 1991-93 OLDSMOBILE EIGHTY EIGHT 1991-93 BUICK LE SABRE 1991-93 CADILLAC SEVILLE 1991-93 OLDSMOBILE CUTLASS SUPREME 1991-93 PONTIAC GRAND PRIX 1991-93 CHEVROLET LUMINA 1991-93 BUICK REGAL 1992-93 CHEVROLET LUMINA APV 1992-93 OLDSMOBILE SILHOUETTE 1992-93 PONTIAC TRANS SPORT

TRANSAXLE APPLICATIONS:

1993 HYDRA-MATIC 4T60-E (RP0 M13)

CONDITION: SOME VEHICLES MAY EXHIBIT A TRANSAXLE VIBRATION AT AN ENGINE SPEED BETWEEN 3000-5000 RPM WHEN IN SECOND GEAR (ONLY).

NOTE: SECOND GEAR VIBRATION SOUNDS VERY SIMILAR TO GROUNDED OUT ENGINE MOUNTS.

CAUSE:

WHEN ENGINE SPEED IS BETWEEN 3000-5000 RPM, A DISTURBANCE MAY OCCUR BETWEEN THE OUTPUT SHAFT ASSEMBLY NEAR THE BEARING, INPUT SUN GEAR (511) AND COMPONENTS ATTACHED TO THE SUN GEAR SHAFT (66. THIS DISTURBANCE MAY BE ENOUGH TO CAUSE A VIBRATION WHILE IN SECOND GEAR.

CORRECTION: THE INPUT SUN GEAR BEARING AND INPUT SUN GEAR BEARING JOURNAL HAVE BEEN REMOVED FROM THE OUTPUT SHAFT , AND REPLACED WITH A (NEW) 4TH CLUTCH SHAFT TO INPUT HOUSING BEARING . THE 4TH CLUTCH SHAFT TO INPUT HOUSING BEARING IS LOCATED ON THE (INNER DIAMETER) INPUT SHAFT OF THE INPUT AND 3RD ASSEMBLY. TO ACCOMMODATE THIS NEW 4TH CLUTCH SHAFT TO INPUT HOUSING BEARING, A BUSHING HAS BEEN ADDED TO THE BASE (OUTER DIAMETER) OF THE SHAFT ASSEMBLY 4TH CLUTCH.

NOTE: INPUT SUN GEAR (66 WAS ALSO MODIFIED. THE SURFACE FINISH SPECIFICATION HAS BEEN REDUCED FROM THE INNER DIAMETER (INPUT SUN GEAR BEARING SURFACE) MAKING IT UNABLE TO BE USED IN A TRANSAXLE WITH A INPUT SUN GEAR BEARING (511). THE PRIOR INPUT SUN GEAR (PART NUMBER 8682441) CAN BE USED IN EITHER APPLICATION.

THE REMOVAL AND/OR RELOCATION OF THE ABOVE BEARINGS ISOLATED THE OFFENDING COMPONENTS AND DAMPENED THE VIBRATION WHILE IN 2ND GEAR.

DATE OF PRODUCTION: EFFECTIVE JUNE 1, 1993 (JULIAN DATE 152) ALL 1993 HYDRA-MATIC 4T60-E TRANSAXLES WILL BE BUILT WITH THE NEW 4TH CLUTCH SHAFT TO INPUT HOUSING BEARING AND NEW HUB AND SHAFT ASSEMBLY 4TH CLUTCH. HYDRA-MATIC 4T60 TRANSAXLES WILL BE UNEFFECTED. NO HYDRA-MATIC 4T60 PRODUCTION OR SRTA TRANSAXLES WILL BE BUILT WITH THE NEW 4TH CLUTCH SHAFT TO INPUT HOUSING BEARING AND NEW SHAFT ASSEMBLY 4TH CLUTCH.

SRTA INFORMATION:

THE 4T60-E SERVICE REPLACEMENT TRANSMISSION ASSEMBLY (SRTA) WILL PHASE THE 4TH CLUTCH SHAFT TO INPUT HOUSING BEARING AND HUB AND SHAFT ASSEMBLY 4TH CLUTCH INTO PRODUCTION WHEN SUFFICIENT PARTS ARE AVAILABLE. SRTA TRANSAXLES ARE SCHEDULED TO BE AVAILABLE AFTER NOVEMBER 15, 1993.

SERVICE PART INFORMATION:

PART NUMBER PART NUMBER (PREVIOUS) (NEW) DESCRIPTION MODEL

NONE 8651936 SHAFT PACKAGE-VIBRATION REPAIR ALL

SHAFT PACKAGE-VIBRATION REPAIR CONTAINS THE FOLLOWING: 8676613 24201094 SHAFT ASSEMBLY-4TH CLUTCH ALL

8651924 8651937 SHAFT KIT, INPUT (WITH HOUSING) ALL

8651716 8683560 SHAFT-OUTPUT ALL

8675032 NOT USED BEARING-INPUT SUN GEAR ALL TO OUTPUT SHAFT

8682441 8683559 GEAR-INPUT SUN ALL

PARTS ARE EXPECTED TO BE AVAILABLE ON NOVEMBER 15, 1993.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY USE: LABOR OPERATION NUMBER: K7537

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER." THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS OCCURRING ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

INTERMITTENT OR NO TCC APPLY (REPL. TRANSAXLE WIRE HARNESS) #37-71-36 - (10/13/1993)
REVISION 10/27/93


THIS BULLETIN IS BEING REVISED TO CHANGE MODEL YEARS UNDER MODELS SECTION. ---------------------------------------------------------------------- SUBJECT: INTERMITTENT OR NO TCC APPLY -- POSSIBLE DTC CODE 26 AND/OR DTC CODE 39 (REPLACE TRANSAXLE WIRE HARNESS)

MODELS: 1991-93 CHEVROLET LUMINA 1992-93 CHEVROLET LUMINA APV 1991-93 PONTIAC BONNEVILLE, GRAND PRIX 1992-93 PONTIAC TRANS SPORT 1991-93 OLDSMOBILE NINETY EIGHT, EIGHTY EIGHT, CUTLASS SUPREME 1992-93 OLDSMOBILE SILHOUETTE 1991-92 OLDSMOBILE TORONADO 1991-93 BUICK PARK AVENUE, RIVIERA, LESABRE, REGAL 1991-93 CADILLAC FLEETWOOD, DEVILLE, SIXTY SPECIAL, ELDORADO, SEVILLE

TRANSAXLE APPLICATIONS:

1991-93 HYDRA-MATIC 4T60-E (RP0 M13)

CONDITION:

SOME OWNERS MAY EXPERIENCE AN INTERMITTENT OR NO TCC APPLY CONDITION. A SES LIGHT WITH DTC 26 AND/OR DTC CODE 39 MAY BE PRESENT.

CAUSE:

THE CONDITION MAY BE CAUSED BY A SHORT IN THE INTERNAL WIRING HARNESS OF THE TRANSAXLE. IT WAS DETERMINED THE DIODE WIRE SPLICE (IN THE WIRING HARNESS) MAY HAVE THE ABILITY TO POKE INTO THE INSULATION OF THE ADJACENT WIRE CAUSING A SHORT.

CORRECTION:

TO TEST FOR THE ABOVE CONDITION, DISCONNECT THE TRANSAXLE WIRING HARNESS AT THE TCC SOLENOID. AT THE TRANSAXLE ELECTRICAL CONNECTOR, PLACE ONE PROBE OF THE DVOM AT PIN "A", AND THE OTHER PROBE AT PIN "D". WHILE MONITORING THE DVOM, MANIPULATE THE WIRE HARNESS AT THE DIODE LOCATION. IF CONTINUITY IS PRESENT AT ANY TIME, THE TRANSAXLE WIRE HARNESS MUST BE REPLACED.

SERVICE PART INFORMATION:

THE FOLLOWING PART NUMBERS ARE FOR 4T60-E TRANSAXLES BETWEEN MODEL YEAR 1991-1993.

PART NUMBER DESCRIPTION MODELS 12109436 HARNESS ASSEMBLY WIRING 2ABW, 2ANW, 2AWW, 2CLW 2CSW, 2CTW, 2CXW, 2CZW 3ABW, 3ANW, 3AWW, 3CLW 3CSW, 3CTW, 3CXW, 3CZW

12121130 HARNESS ASSEMBLY WIRING 1AHW, 1AMW, 1APW, 1AVW 1AZW, 1YMW, 1YPW, 1YZW 1BTW, 2AMW, 2APW, 2AVW 2AYW, 2AZW, 2BTW, 2BYW 2PHW, 2WAW, 2YLW, 2YMW 2YZW, 3AMW, 3APW, 3AVW 3AZW, 3BTW, 3BYW, 3PHW 3WAW, 3YLW, 3YMW, 3YRW 3YZW

12121131 HARNESS ASSEMBLY WIRING 1CWW, 2CWW, 3CWW, 3CMW

12143000 HARNESS ASSEMBLY WIRING 3BHW

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

LABOR OPERATION: K6554 USE PUBLISHED LABOR OPERATION TIME.

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER." THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS OCCURRING ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.
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