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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 3, 2005
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Open Help Requests for GM
Help Request Answers
1995 Buick Regal Gran Sport 3.8L Upper Intake VIN: 2G4WF52L4S
O.k. folks here is a good one to for you to tell your grand kids about. A friend of mine had a timing chain installed by Firestone at 70,000 miles (?). Ever since then they said the car wasn't running right. It had a problem with it leaking anti-freeze at a id...
1990 Chevrolet Cavalier 2.2L engine VIN: 1G1JC14G4L
My son's car. Using 1 qt. 10W-30 every 300 miles with almost no visible smoke. At worst when driven at speed. On rebuild, I used name brand US parts, had bored .5mm by very competent machine shop and also machined deck of block. Assembled myself--main and rod ...
1997 Chevrolet Tahoe 5.7L Mechanical
I have here a Tahoe with front disc / rear drum, Kelsey Hayes equipped 4 wheel ABS system. It came to me with no brakes at all. By no brakes I mean it had no power assist, pedal going to the floor, leaking wheel cylinders, bad left caliper and hose, pads worn ...
1997 Chevrolet Blazer 4.3L No Communication OBD VIN: 1GNDT13W9V
This vehicle has no communication, generic nor specific. So it will not pass CA emissions test. At first someone jumped power to the computer, so I thought that would be the problem. We found that the ignition switch was the original problem. We installed the ...
1995 Saturn SW2 1.9L No Start, Cuts out, Stall, hard start when cold VIN: 1G8ZK8276S
Customer complains of hard start when cold, but will be fine after warmed up. Kept car over night and it would not start in the morning. So I ran some bacis checks, has good fuel pressure, has spark, has injector pulse. You can get it to start but it takes a l... Trouble codes: 27 (Quick QDM Fault), 48 (Ref Pulse Error), 71 (Coolent Temp High)

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Riviera 3.8L No Start, Cuts out, Stall, MIL Lamp on VIN: IG4GD221XS
Thanks for the replies. Car went to the dealer. Ran out of time. Most of the replies leaned toward grounds and sensors. Found out from customer turned out to be the computer. They told customer they replaced ecm and fuel system parts. No specifics on the fuel ... Trouble codes: 321 (no crank signal), 341 (cam crank error count too high), 361 (18 x inaccurate).
1985 Chevrolet Caprice Classic 5.0L Hesitation VIN: 1G1BN69HIF
thanks everyone who response. the fix was replaced another carburator. it runs fine . thanks agaign.
1993 Chevrolet K1500 Suburban 5.7L Hesitation VIN: 1GNFK1PJ34
Thanks everybody. The problem did turn out to be the EGR valve. Dan [...] told me about a quick test. He said to apply vacum to valve and if it opened it was bad. I did and it opened. Got a new valve and it would not open. A lot of you said it works off of exh...
2000 Chevrolet Silverado 1500 4.8L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp on, LONG CRANK THENSTART VIN: 1GCEK14V3Y
want to thank every one for there input it was the fuel presure regulator really want to thank evryone again Trouble codes: P0300.
2001 Chevrolet Blazer LS 4.3L transfercase VIN: 1GNCT18W61
Sent the customer to dealer because we couldn't say for sure if the problem was the encoder motor or the transfer case module.Both are very expensive so we sent the customer to G.M.hoping their scan tool could communicate and confirm our diagnosis.The problem ...
2004 Chevrolet Silverado 2500 LS 6.0L Alignment VIN: 1GCGK23U84
Well it is decided that at this time the only way to properly do a 4 wheel alignment on a quadrasteer vehicle is with the Tech 2. Thanks for all the help! Kevin [...]
1996 Geo Tracker 1.6L MIL Lamp on VIN: 2CNBJ1368T
This is a fix for sure. I wish to thank everyone who took the time to help me on this. I also have to thank iatn for the post. The tracker came in on thursday, the last day of inspection and emission, for this.Armed with all the replys,I started out with the b... Trouble codes: P0400.
1994 Pontiac Bonneville SE 3.8L hvac controller VIN: 1G2HX52L1R
Okay, first off, thanks to all who responded. The blend door motor gear did in fact break and that was what was binding up the door. I did not have to remove the dash and it was fairly accessible by removing the ECM, the passenger side kick panel and the glove...
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