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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 22, 2007
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1998 Cadillac Catera 3.0L Misfire VIN: WO6VR52R8W
Vehicle came for misfire and headgasket job cuz it was leaking dexcool from the back of the engine cant see cuz of no room between firewall. decided to replace it when opening the cowl or should say 1/4 way on the job found a heater valve leaking . stopped rig...
2003 Chevrolet Suburban 1500 LS 5.3L turn signals VIN: 3GNFK16ZX3
Here is an unusual one. When turning the left turn signal on, all 4 directionals flash (like the hazards are on). About 1 month ago, I replaced the multifunction switch for the same problem. All was well until last week. I find it hard to believe that 2 switch...
2000 GMC Sierra 1500 SL 4.8L MIL Lamp on VIN: 2GTEC19V3Y
Hi this my be simpile but i havn't ck it out yet. cosmstor says ck engine light on he had a friend ck the codes he said that thier was no commations to the ecm I said it sounded like a blown fuse but then he told me that it drives fine. I would think if it was...
2002 GMC Sierra 2500 HD SL 6.6L No Start VIN: 1GTHK29132
need a little help on this one not really a diesel tech, cranks will not start, took fuel supply line off back of engine no fuel coming out.while cranking fuel pump relay does not click, all fuses and relays are good, this is a four prong relay have power comi...
1989 Oldsmobile 98 Regency Touring 3.8L Poor Idle Quality, MIL Lamp on VIN: 1G3CV54C7K
Olds guys need a little help on this one scanned the car had code 26 Quad Driver Module Circuit from what i under stand this driver grounds things like egr and purge soilniond and fan relys and stuff like that how do i figer out witch one is bad every thing se... Trouble codes: 26 (Quad Driver Module Circuit), 41 (Cam sensor circuit)
1994 Pontiac Grand Prix SE 3.1L MIL Lamp on
this is my personal car check eng light came on i went to check for codes and found at the dlc that the vehicle was never wired from the factory it has the a terminal ground wire but not the b terminal could not find a good wiring diagram anywhere to tell me w...
2001 Pontiac Montana 3.4L no security lights VIN: 1GMDX03E61
To GM specialist, the car that had been working was towed to my garaged and it can not start. I checked it with a MODIS computer scanner and it displayed the error code PO 1626. Also after the check the dashboard security light does not light up. After 2 hours...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Cadillac Catera 3.0L no spark or fuel VIN: W06VR52R6W
Sorry it took so long to respond. This is a used car so I can only work on it when I get an extra minute. Thanks for all the responses. Alot of the responses suggested a bad PCM which seems to be the problem. The car had good power and ground going into the co...
1998 Chevrolet Blazer 4.3L temp door actuator VIN: 1GNDT13W3W
customer picked up truck and has not returned. i could never prove what was wrong with this truck. i learned more of how this system from the replies and your replies made me think. thank you for your help. all of you. iatn is the best.
2002 Chevrolet Malibu 3.1L radio/dash gauges/key fob VIN: 1G1ND52J82
Well I was not able to get car back, this was not a regular customer and have not heard back since. From the the replies I would like to make a couple comments, first there is definatly a high rate of failure for ignition switchs and bcms, but since my tech ba...
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