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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 14, 2005
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Open Help Requests for GM
Help Request Answers
1991 Buick Regal 3.8L master cyl VIN: 2G4WB11L2N
hi all you techs out there im haveing a problem with a moraine 3 brake system which has no power assist. the costomer cant afford the cost of a new unit from the dealer and i cant seem to find an after market supplier for these units or anyone who can rebuild ...
1992 Buick Century Limited 3.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 3G4AL54N6N
Hello all, I have this lovely Buick here, that occasionally stalls, backfires, races to almost 3000 RMS. Codes that came up were for coolant temp sensor and ESC circuit. Replace both coolant temp sensor, replaced knock sensor. Driving down the road, all of a... Trouble codes: 14 (Coolant Temp), 43 (ESC Sensor)
1992 Cadillac Eldorado 4.9L Excessive Emissions VIN: 1G6EL13B2N
hello friends, have a problem car, failing smog, high nox at 15 and 25. egr system functions properly, good valve and flow. ignition timing is correct. oxygen sensors functioning properly, engine temperture correct. fuel trim data is whats puzzling me. blm is ...
1992 Chevrolet G20 Chevy Van 5.7L No Start, Stall VIN: 2GBEG25K5N
This vehicle came in with a stalling complaint, when it arrived on the wrecker, it started right up. Checked for codes-none. Test drove for 10 miles-ran perfect. After shutting engine off, tried to restart and it cranked for 6-8 seconds before it started. Rest...
1995 Chevrolet C1500 Cheyenne 6.5L No Start VIN: 1GCEC14SXS
Hello felow techs, Im in over my head with this one. 95 chevy c1500 diesel pickup was towed into my shop about 2 months ago, with a no start situation. we pushed it into the shop and put the batteries on charger for several hours. we then tried to start it, an...
1996 Chevrolet C1500 Cheyenne 5.7L engine VIN: 1GCEC19R9T
This is one of those headache jobs, last summer customer bought this truck from dealership, later the same day truck would not start, dealer towed, looked at said nothing wrong, truck started right up. Four more times this happened all within two months, custo...
1996 Chevrolet Monte Carlo Z34 3.4L rotors VIN: 2G1WX12X1T
This vehicle came in with clicking noise. I test drove it and heard nothing at first, then once the brakes where heated up there was a clicking noise when the brakes were aplied. So I took the car back to the shop and found the rotors were slightly warped, the...
1997 Chevrolet C1500 Cheyenne 5.7L Unknown VIN: 1GCEC19R5V
This truck came in with check engine light on, no other symptoms. It had P1870 stored in freeze frame but nowhere else. If I check dtc status it says dtc not supported. We posted on this truck 2 months ago for the same problem. Most replies said to replace the...
2000 Chevrolet Silverado 2500 6.0L ABS Activation VIN: 1GCGK2946Y
Thanks in advance for any advice ... Got this one in Monday with a slow speed ABS activation. Does not do it when driving straight ahead, only when turning, like "whipping it into a parking spot" as the customer states. Have searched achives and TSBs for info....
2000 Chevrolet S10 2.2L Surge, Cuts out VIN: 1GCCS1445Y
this is my truck it cuts out at slight tip-in, sometimes it does it real intermittently and sometimes lately i can make it do it almost all the way home (10 miles) the cut out is severe and may be once or several times and you can hear a backfire if its persis...
2001 Chevrolet Camaro 3.8L Cuts out, Misfire, MIL Lamp on VIN: 2G1FP22K31
this vehicle misfires bad under heavy loads and spark knocks real bad, thought plug wires were cross firing they helped a little but did not fix whole problem. plugs are ok. it would seem that something in the primary ignition system is having a problem. one o... Trouble codes: P0300
2001 Chevrolet Cavalier 2.2L Daytime running lamps VIN: 1G1JC12411
Customer states intermittently the daytime running lights (DRL's) come on, off, flicker, etc. The DRL indicator goes off when the lights go off. We had vehicle duplicate problem in the shop. We just turned ignition to ON, DRL's and indicator on dash "flickered...
1991 GMC S15 Jimmy 4.3L starter VIN: 1GKC11829M
customer complains that vehicle would hardly start/not start right after hot soak - ( 15-20 minutes of driving) it almost seemed like bad starter/ starter binding or a weak battery.tested charging system and it is fine. installed new starter and battery and it...
1996 Oldsmobile 98 Regency Elite 3.8L A/C Control VIN: 1G3CX52KOT
We installed a new compressor but this condition was here when the vehicle came in. The Air does not blow out of the dash vents. Only the defrost. We have checked for manifold vacuum and it is good and the storage tank under the right fender well is not cracke...
1992 Pontiac Bonneville SE 3.8L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1G2HZ52LXN
Hey Gm Techs, I have this 1992 Pontiac Bonneville customer bought a year ago, ended up replacing Coil Pack, Module, Cam Sensor, tune-up when buying. Car runs good most of the time. When it is 70 degrees or warmer out, and engine has warmed up good, then sets f...
1997 Pontiac Sunfire GT 2.4L No Start, Cuts out, Stall VIN: 1G2JD12TSV
hi guys this sunfire has a hard time starting in the mornings only. 1St thing in the morning when you start the vehicle it cutts off, several times, and if you give it gas the rpm's flacuate up & down like it want to cut off and then it will stay running.Once ...

Fixes & Summaries for GM
Fix/Summary Answers
1994 Chevrolet Camaro Z28 5.7L 2-3 shift VIN: 2G1FP22P3R
Thanks for all the replies. I wish I could share what fixed the problem but I'm not sure. Due to time, we took a two approach repair. We sent the pcm for re-programming and replaced the trans with another. Vehicle fixed. Thanks Again !!
1995 Chevrolet Astro 4.3L Surge, Stall VIN: 1GNDN19W8S
Sorry it took so long to post a reply. I thought I would wait for a while to see if it came back again. As per most of the replies, the EGR Valve seems to have repaired the problem. The EGR Percentage was reading 1% at idle and that finally led to the repair. ...
1996 Chevrolet K3500 6.5L No Start VIN: 1GBHK34F7T
I did find out what was causing the no start after I replaced the fuel injection pump. I did some tests and this is what I found. -Using the Tech2, Injection closure time is 14.2ms (needs to be around 2.0ms)All other data is good. I labscoped fuel sol. Closu...
1997 Chevrolet Venture LS 3.4L coolant temp sensor VIN: 1GNDX03E4V
Thank you very much for all the info. It helped me come up with a good way to solve this problem. This is the first time that I had one act like this because you could drive the vehicle for a while and every thing would be alright. Then after a while an air po...
1993 GMC Jimmy 4.3L no 1st gear in drive
Of the nine replies I got David from Australia was the most helpful at diagnosing the problem. I had damaged two of the teflon seals when I installed the front drum over the input shaft. After reusing two old rings I got the thing back together but I fear that...
1997 GMC Safari SLE 4.3L engine assembly VIN: 1GKEL19W5V
Thanks for all the replies, they were very helpful. The job went pretty well for us. We couldn't figure a way to chain the front of the body to the hoist, (above ground asymetrical), without the subframe in place, so we removed everything we could from the r...
1998 GMC Jimmy Envoy 4.3L Dome lights VIN: 1GKDT13W8W
Hi guys-thanks for all your help. You did get me thinking in the right direction. After unhooking lock out switch at driver's switch the driver's window worked correctly. I then looked at where the wiring was going after that and started looking at connectors ...
1998 GMC C1500 Sierra SL 5.7L abs pump VIN: 2GTEK19RW1
Thank you for the help on bleeding abs Kelsey hayes. I thought that was the correct procedure however I let my son convince me otherwise in any case the brakes work great thanks for theassist
2001 GMC Safari SLE 4.3L Excessive Emissions, Surge, Misfire, MIL Lamp on VIN: 1GKDM19WX1
1988 Oldsmobile 98 Regency Brougham 3.8L MIL Lamp on VIN: 1G3CW51C6J
thanks for all the help-we tried every thing that was sent to us but we still did not get the light to stay out- come to find out the customer has had the light on for two years and was not concerned with it. there were no drivability problems with this vehicl... Trouble codes: 26 (QDR Failure).
1999 Oldsmobile Alero GL 3.4L tire monitor VIN: 1G3NL52E3X
the vehicle was still here waiting for more work, i reset the change oil light as i did a LOF also, that was press twice and hold, and the tire monitor press three times and hold the third time, reset botton in fuse box on left side of dash. THANKS FOR ALL THE...
1996 Pontiac Grand Am SE 3.1L Hesitation VIN: 1G2NE52M2T
well, the vehicle was taken back to the dealer to recheck ecm programing. the tech at the dealer that performed the programing said everything was good. he also mentioned that he has had several problems with grounds not having good contacts. when vehicle retu...
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