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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 1, 2010
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Open Help Requests for GM
Help Request Answers
1995 Buick Riviera 3.8L Misfire, MIL Lamp on VIN: 1GW4GB17S7
cant get the solais snap on scanner to comunicate or master tech the fuses were bad ,but cant get into see why the check eng lamp is on has a obd ii concector on the car what am i doing wrong put all the vin in the scanner comes up with right id but will not c...
2005 Buick Rendezvous CX 3.4L MIL Lamp on VIN: 3G5DA03L26
cannot get p0446 to stay away, replaced vent valve, purge valve, and still comes on. Perfomed vacuum test with tech 2, worked perfectly. any ideas? Trouble codes: P0446 (evap vent system perfomance)
1989 Chevrolet Corsica 2.0L Hesitation, Surge, Cuts out VIN: 1G1LT5413K
This vehicle came in for the hesitation and stalling it had two codes. One was system lean and the other was system rich. It had a new O2 sensor, ignition module, coils, plugs, fuel filter, fuel pump, wires, map sensor, tps. The vehicle would go into closed lo...
1996 Chevrolet C1500 5.0L Poor Idle Quality, Misfire, MIL Lamp on
after replacing lower intake manifold gaskets to repair coolant leak, engine runs rough. Distributor is timed correctly, cam retard is 0 degrees a idle, 27 degrees at 2000 rpms, truck runs like it has 2 plug wires crossed but all are correct. it's almost like ... Trouble codes: P1345, P0300
2000 Chevrolet S10 4.3L upper bushings VIN: 1GCCS19W8Y
Looking to see if anyone has a good procedure of replaceing the left side upper bushings on this S10 truck with a V6. I normally do them on the truck but the exhaust is right next to the rear bushing. There is no room to get it off as it sits. The only way i s...
1995 GMC W3500 Forward W3S042 3.9L stalls VIN: J8DC4B1K15
Gentelmen, this truck belongs to a landscaper customer and I've never had to do much with it at all. He bought it new and it has been trouble free. Recently, the truck will stall instantly when it is put in drive or reverse unless it is warmed up for 10 minute...
2002 GMC Envoy SLT 4.2L oil pressure VIN: 1GKDS13S52
having trouble finding adapter for mec. oil pressure gauge hook up,snapon on the way but is last resort ,tried all local sources
1999 Oldsmobile Cutlass GL 3.1L Compressor VIN: 1G3NG52M0X
Thanks in advance guys..This very clean cutlass came into shop with new owner. AC freon was low and ac not working. Evac and recharge system. Compressor will not come on. All fuses good. No codes. Disconnected battery just to be sure of a good reset (if needed...
2002 Saturn SL1 1.9L Mechanical VIN: 1G8ZH52862
I have this saturn that has me stumped.It uses 1qt of oil every [...].Does not run bad or smoke.No external oil leaks,new pcv valve installed.Compression good on all 4 cylinders(165-170psi).Engine vacum is 20inhg.Cylinder leak down test showed a 10% leak o...
2006 Saturn Vue 3.5L torque converter VIN: 5GZCZ63416
After the vehicle was gone for the weekend, customer called back with a check engine light on. P0741 was present, and the TCC was not applying, even though it was being commanded to do so. Did the diagnostic procedure for the code p0741, and found the tcc sole...

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Regal Gran Sport 3.8L Mechanical VIN: 2G4WF552L0
Thanks to all who replied. After removing the timing cover again, I made sure the drain hole behind the seal was clear with shop air & then installed a GM seal. Leak appears to be stopped. I also pulled the oil filter cover & made sure the relief piston was no...
1995 Buick Riviera 3.8L No Start VIN: 1G4GD2213S
Many of you had great ideas, unfortunately this one beat me. If I had unlimited time with this car it would eventually have been repaired. But I digress, this car was so intermittent with no specific apparent cause in it's no start/flood. I did take the advice...
2002 Chevrolet Tracker LT 2.5L MIL Lamp on VIN: 2CNBE63492
i have performed a top end injector flush cleaning/decarb, i have checked mode 6 and all has passed for the misfires, car runs good every time that i have driven it. also the compression is at 155-165 psi all cylinders. one thing i found out was that this vehi... Trouble codes: P0300.
1999 GMC Safari SL 4.3L Cuts out, Misfire
ITS FIXED! Many told me about Dist. problems w/ this engine. I took the Dist. out and it checked out fine. (it scoped fine too) I forgot to mention the cam retard was @ -12 and no way to turn the Dist. It ran fine w/ the -12 offset sometimes, so I didn't t... Trouble codes: P0300.
2001 GMC W3500 5.7L No Start, Cuts out, Stall VIN: 4KDB4B17R1
Thanks everyone for the reply's. Out of desperation we got a PCM from the dealer and its been a week and all is well. The dealer tells me he has seen this before and I would tend to trust him as we do a lot of business with them and they have always been hones...
2001 GMC Sierra 2500 HD SLE 6.6L engine VIN: 1GTHK23171
Air in thi system was not the problem after all. The problem was the machine shop mistakenly put freeze plugs in the back of the block where the water enters the motor from the water pump. Techs around here said the head gaskets wereon the wrong side, it is po...
2001 Saturn L300 3.0L Passlock System VIN: 1G8JW52R41
Well, this car is finaly gone. I came to the conclusion that the BCM had not been correctly programmed. I found this by accident . I went out to the car in the morning and tried to unlock it using the key fob and it was a no go. I looked at the data stream aga...
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