Error Code P1670 QDM questions - Page 10 - 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 02-01-2010, 06:45 PM   #91
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No the plug is fine. I even blew it out to make sure nothing in it was connecting that pin to ground. I am guessing a short inside the case also. I am wondering if a bad solenoid could cause this pin to ground out. Just trying to dig up a wiring schematic of the tranny.
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Old 02-01-2010, 06:52 PM   #92
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Sorry to say the only way to find out will be to open the case.
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Old 02-01-2010, 06:56 PM   #93
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So can that cover be pulled of the case with the transmission still in the car?
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Old 02-01-2010, 06:58 PM   #94
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I believe you would need to lower the trans. Billboost should be able to answer that.
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Old 02-01-2010, 07:03 PM   #95
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Yes, the trans needs to be lowered to get that side cover off...
hold on...I'm looking at the schematics now...
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Old 02-01-2010, 07:13 PM   #96
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Originally Posted by cspoonts View Post
okay I found one problem. Near the transmission the round plug with 7 contacts. It had 3 wires melted together one black two brown. One of the brown is from 5C. Fixed that. Now I get now grounded contacts at the relays if the transmission is unplugged. If I plug in the transmission the relays find ground on pin 85 again. What does this connector plug into on the transmission?
I don't see 2 browns. Maybe TAN?

There are 3 different models listed below. Not sure what which one you have until you give me the model # off the metal tag.

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Old 02-02-2010, 12:39 AM   #97
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Well pin E on the plug is brown but it looks like it goes to red in the transmission. Where is the 'metal tag'?
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Old 02-02-2010, 08:00 AM   #98
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Tag is on the back side of the trans by tye diff housing. I'd test the wires with a multimeter...but in the end it looks like the trans is coming out.
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Old 02-02-2010, 10:58 AM   #99
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Quote:
With the harness unpluggged, none of the transmission side pins should go to ground. There should be continuity from A to E, B to E, C to E and D to E. As far as pins F and G, that is a separately powered circuit and would blow a different fuse. I guess I am assuming that fuse 5C (10A) is blowing in the inst panel fuse block. If you have 3 pins going to case ground, then there is probably a wiring harness rubbed through inside the case- not a fun repair on one of those.
Here is what I found out about how to test the transmission wires.

I have not checked the tag yet. Its wet outside and I am not ready to go lay on the ground under the car to see the tag yet lol
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Old 02-02-2010, 01:52 PM   #100
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So I am pretty sure that I have a wiring problem in the transmission. I get ground to case on pins A, B, C, D and E. So I guess this means I have to drop the tranny to fix this?
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