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Prev Professional Automotive Repair Technical Discussions for February 26, 2005
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Open Help Requests for GM
Help Request Answers
1996 Cadillac DeVille 4.6L tcc VIN: 1G6KD52YXT
car has a p0471 code for tcc slip speed error. we did a trans flush but code returned. after flush master tech shows slip speed at +120 plus. mitchell says it should be -10 to -64 . passed code on two drive trips,but code returned. after longer drive home. th...
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1989 Chevrolet Corsica 2.0L Hesitation, Surge, Stall, Misfire VIN: 1G1LT5419K
On light accleration car hesitates while driving, and customer has had car stall out twice and restart fine. In shop loaded up will have visual blipps in injector pattern and spark cutting out for a fractional second. Im thinking it maybe a module or pick up. ... Trouble codes: 45 (rich)
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1999 Chevrolet Venture 3.4L pass key VIN: 1GNDX03E5X
I have completed intake gasket, plugs, coils, and wires on this van. On initial restart all was fine, but after test drive and restart, the Pass Key light has come on and the air bag light will also illuminate intermittently. Checked codes with Solus scanner a...
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2003 Chevrolet Tahoe LT 5.3L transmission VIN: 1GNEK13Z63
Customer was driving with cruise on at 70 mph. Trans suddenly downshifted to 2nd, never to return to 3rd or 4th. Cannot be manually shifted to 3rd. Test drive with tech2 shows pcm is commanding it to shift. I am not a trans tech so here's my question. Should t...
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2003 GMC Sierra 1500 SLE 4.3L engine VIN: 2GTEC19X93
Hello all, I am posting this for another Tech. This Sierra pick-up has a noise only when cold i.e. after sitting outside in the shade for at least an hour ,35 f or lower. When driving at abou 1500-1700 rpm there is a howl sound that seems to eminate from the l...
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1991 Oldsmobile Cutlass Ciera SL 3.3L Poor Idle Quality VIN: 1G3AM54N1M
Customer brought this vehicle to me after he replaced the IAC to cure a fast idle, about 2800 RPM. I checked the IAC he put in and saw that it did not have a o ring seal on it, I picked up another one, still had the same problem. The idle air passage is clean....
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1999 Pontiac Sunfire SE 2.2L Lighting
The problem with this vehicle is daytime running lights and high beam lights don't work. Low beam and park lights do work. I notice high beam symbol is on and sometimes blinks when trans is shifted into drive. I read the achieves and I found two corrosive brok...
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2000 Pontiac Grand Prix SE 3.1L gas guage VIN: 1G2WK52J3Y
the car came in with shifter lights blinking and gas guage moving from full to empty when you move shifter
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Fixes & Summaries for GM
Fix/Summary Answers
1993 Cadillac DeVille 4.9L heat VIN: 1G6CD13B8P
Thanks to all for the replies. As suggested by the majority of responses, we changed the heater core. Now the heat is GREAT.
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1995 Chevrolet Lumina APV 3.1L engine VIN: 1GNDU06D4S
Thanks to Dave, Lanes, and Bill [...], I checked the torque on the head bolts and found 1 broken in the upper row nearest the lifters. Removed head, finally managed to get broken end out, reassembled and all is well now. Really grateful to all who replied with...
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1998 Chevrolet Malibu 2.4L steering VIN: 1G1ND52T4W
hello to all, well it's fixed after a week of frustrating hours. I want to thank clyde for giving me advise on changing the high pressure power-steering line with a GM line. I had secound thoughts on changing the line after replacing it with a after market lin...
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2001 Chevrolet Suburban 2500 8.1L No Start, Stall VIN: 3GNK26G11G
Well this one is done. I hope no one else out there has to go through what I did. I ended up having to pull the transmission to get enough access to pull it out. This has got to be one of GM's dumbest ideas. You would think that they would have learned their l... Trouble codes: P0335 (Crankshaft Position Sensor Circuit).
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2001 Chevrolet Blazer LS 4.3L four wheel drive VIN: 1GNCT18W21
thanks for the reply there was a wiring harness shorted to ground by the egr.
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2002 GMC Sierra 1500 5.3L Poor Idle Quality, Stall VIN: 2GTEK13T84
performed crankshaft varition learn procedure and idled much better cust has yet to return,thanx to everyone that replied
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1996 Pontiac Grand Am GT 3.1L MIL Lamp on VIN: 1G2NW52M4T
well the fix appeared to be replacing the pcv valve,i had an answer from jim in georgia on this one,the valve draws vacuum from same port as the purge control solenoid,the pcv valve appeared to be the original and would not rattle when shaken.i replaced it and... Trouble codes: P440.
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1997 Pontiac Trans Sport 3.4L Cooling Systems VIN: 1GMDX03E7V
Upon closer inspection of the head gaskets, found one head gasket with a small crack to the bolt hole. I suspicion that we had coolant steaming up by the headbolt. I have dealt with the newer GM V8 engines and found that problem with no clear evidence on the b...
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2002 Saturn SC2 1.9L moonroof VIN: 1G8ZY14712
Fixed this thing.. Turns out it was the tracking. Remove roof from car and wiped out all the tracks. Re-greased everything and it works fine.
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