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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 25, 2006
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Open Help Requests for GM
Help Request Answers
1986 Chevrolet Corvette 5.7L Excessive Emissions, Poor Idle Quality VIN: 1G1YY0785G
car originally came in for emissions failure, but would not idle without keeping foot on accel. found someone had jacked the idle stop screw out as far as possible to try to keep running. iac did not work at all & connector was messed up. i replaced the iac & ...
1993 Chevrolet C1500 Cheyenne 5.7L No Start VIN: 2GCFC19K7N
vehicle towed in for a no start. we replaced fuel pump after checking power to connector ok at the time ran for about 5 minutes and died no power to gray wire at pump can energize wire at relay can hear pump running. you can turn the key off and on and now and...
1997 Chevrolet Blazer 4.3L courtesy lights VIN: 1GNDT13W2V
Hello Gentlemen, The interior lights do not go off on this 97 S-Blazer. I have checked all switches and replaced interior control module. Lights still on.
1998 Chevrolet Blazer 4.3L ecc VIN: 1GNCS13W3W
Hello, The vehicle came in for A/C blowing hot. Performed A/C service. A/C still blowing hot, but compressor engaged and lines to evaporator cold. Initially I found no voltage change in driver wire from control module to temperature door actuator when temperat...
2000 Chevrolet Cavalier 2.2L static VIN: 1G1JC1247Y
customer listens to several am radio sport stations most of the time (as opposed to fm) after installing the fuel pump we now have radio static that coincides with the fuel pump running.
2000 Chevrolet Corvette 5.7L abs VIN: 1G1YY22G0Y
this vette has ten thousand miles on it and has never seen rain,the problem is it sets codes for the wheel speed sensors, on all 4 wheels, you can clear the codes and they set the minute the car moves,while driving you can look at sensors with scanner they all...
2001 Chevrolet Silverado 2500 HD 8.1L No Start, Stall VIN: 1GCHK24G41
Hope someone can help with this truck!! it was driven in after stalling a couple of times then a short while it would crank back up,while trying to reproduce the problem the truck has died a couple of times but never long enough to run checks before it starts ... Trouble codes: P0342 (cmp sensor signal low)
2001 Chevrolet Silverado 3500 LS 8.1L Hesitation, Stall, MIL Lamp on VIN: 3GBKC34G41
After talking to the driver, I used my Solus scanner and found the codes po335 and u1041. Having heard so many problems with the crank sensors in the GM engines, I ordered a new one from the local GMC dealer. The location is at the driver's side rear of block.... Trouble codes: P0335, U1041
2002 Chevrolet Suburban 1500 LS 5.3L lifters VIN: 1GNF16Z72J
we istalled new gm lifters and did soak them over night before installing.push rod ends all looked good, no bent rods.
1992 Oldsmobile 88 Royale 3.8L No Start VIN: 1G3HN5316N
Hello, Car was towed in last week for dying on the road. Next day started up and ran fine. Died shortly after. Did this for most of the day. Next day would not start. Tapped crank sensor and fired up. Drove into shop and put on lift. Tapped crank sensor and c...
1998 Oldsmobile Bravada 4.3L temp control VIN: 1GHDT13WXW
Customer brought in Olds Bravada stating AC would only blow hot air. Customer stated that problem started after battery had died. Customer jump started the truck, then drove to store; bought and installed new battery. Issue was noticed afterwards. Trouble tree...
1999 Pontiac Grand Am SE 3.4L Cooling Fans VIN: 1G2NE52E1X
Car came in on a Sunday, (customer calls me at home) I go down and let the tow truck in. Next morn, check vehicle and found tstat was no opening, water pump seeping dirty coolant etec. Repaired all the above. Car ran 200 fans came on all good. BUT something di...
1999 Pontiac Montana 3.4L Misfire VIN: 1GMDU06E8X
This Van has a misfire almost always while idling, especially in gear. The counter on the scanner shows number 3 missing like crazy. Just off idle and driving is fine, never misses a beat. I have replaced, plugs, wires, coils, module, number 3 injector (Used).... Trouble codes: P0300 (Random Cyl. Misfire), P0102 (MAF Voltage low)

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Roadmaster Collector's Edition 5.7L No Start, NO VOLTAGE VIN: 1G4BN52P1T
Well, I guess I jumped the gun posting this help request when the problem ended up being the pump harness that Oreillys sent me. It looked exactly like the one that came off of the car however the power for the pump and the power for the sending unit were in d...
2002 Buick Regal LS 3.8L Hesitation, MIL Lamp on
I unbolted the Headpipe and took it for a ride and it went good, I replaced the Cat. and test drove and the CEL is staying off now. So the plugged Cat. was causing the PO410 code. THANKS TO EVERYONE WHO RESPONDED !!! Trouble codes: P0410.
2002 Cadillac Seville SLS 4.6L tcc VIN: 1G6KS54Y12
I thank all that helped with the different failures these are pron to. I checked into th factory warranty as David sugested and found this car was indeed under 4/50,000 warranty. It had 10 days and 5,000 miles left so I sent it off to the dealer. Thanks again ...
2002 Cadillac DeVille 4.6L a/c blower VIN: 1G6KD54Y22
DUe to the short period, I've received only three replies; but all three hit the jackpot: The blower control module. Rick [...] has also suggested to replace the blower motor as well due to the hi amps draw to be on the safe side (causing the module to fail)....
1991 Chevrolet Camaro Z28 5.0L Cuts out, Misfire VIN: 1G1FP23F3M
the customer did not want to spend any more money and took the car home.
1997 Chevrolet Lumina 3.1L Hesitation VIN: 2G1WL52M6V
Well this was a good one. After revewing all the replies this is what I did. I took the MAF out of the equation by unplugging it. The car ran the same. I unhooked the exhaust also. Same result. I tried hanging the knock sensor out of the block but the PCM was ...
1999 Chevrolet Silverado 1500 5.3L Cuts out VIN: 1GCEK19T6X
thanks for the help, found mass air flow at fault for poor running cold replaced with a knowen good one took care of problem , thanks for the help, hope to help out, steve.
2002 Chevrolet Tahoe LS 5.3L cooling system VIN: 1GNEK13Z42
Thanks for the information that all provided. Sorry about the late posting. The weather cooled off and we were waiting for a heavy duty radiator to be built. (it's not available off the shelf). We went with a 4 core radiator and two 16 inch electric fans in pl...
1996 Oldsmobile Bravada 4.3L Engine noise
Had all good responses. Checked all the springs and tried moving the valve in the guides. Already had used upper cylinder cleaner as suggested, just forgot to mention it. Removed engine for teardown. Sounds like a lot of work but if I dont see a problem in one...
1997 Pontiac Grand Prix GT 3.8L 2-3 shift VIN: 1G2WP52K1V
Removed side cover and found fillings behind the 2-3 shift soleniod, didn't go any further just R/R the tranny. Thankx for all the info.
1997 Pontiac Grand Prix SE 3.1L fuse for compressor VIN: 1G2WJ52MXV
The car came back today and the owners were kind enough to keep a record of which fuses blew out. It was the fuse we wired into the compressor every time! In the meantime, I had received several replies that others had experienced similar problems with intermi...
2002 Pontiac Sunfire SE 2.2L No Start VIN: 1G2JB52442
Hi everyone! Sorry for the extended time period,we went on vacation for a week and a half.We worked on the car right up until the last day of business,right into the afternoon.As said earlier a new fuel pump module was installed and the car was still a no star... Trouble codes: P0201 (injector 1 circuit problem), P0201 (injector 1 circuit problem), P0203 (injector 3 circuit problem), P0204 (injector 4 circuit problem).
2000 Saturn SL1 1.9L No Start VIN: 1G8K2K5277
Found 2 differnet problems, wire chaffed through going to computor and the battery was cross threaded ray from cali was correct, so it seems fix so far. Thanks for all your responses!
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