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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 17, 2007
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Open Help Requests for GM
Help Request Answers
1992 Buick LeSabre Custom 3.8L Mechanical VIN: 1G4HP53L0N
can came in rear brakes lock up at low speed. I replaced shoes pads rotors and drums. clean and adjusted and inspected all hardware no visible problems. Car still intermittenly will lock rear brakes at low speed. Any advice will be much appreciated. Also no ab...
2004 Buick Rendezvous CX 3.4L Stall VIN: 3G5DA03E84
dies at random. intermitt no start. odm reads error, shift indicator moves while in park, tack jumps before it dies. Trouble codes: B3103, B2712, B2961
1999 Cadillac Catera 3.0L Poor Idle Quality, Hesitation, Surge, Stall, Misfire VIN: W06VR52R3X
hi , this car run bad cold , can't keep running cold, dies , popping in intake . just run poor . in open loop once goes in close loop car runs good . date are jumping so bad because it running bad can't get good reading . hope someone can help
1984 Chevrolet S10 Pickup 2.8L No Start
vehicle came in as a cranks only.found that it has spark from coil to cap,cap to wire,from wire to plug have spark.sprayed starter fuild carb(feed back carb).still would not start up.removed plugs to find them coverd with gas.cleaned plugs best i could.let sit...
1995 Chevrolet C2500 Cheyenne 6.5L Stall VIN: 2GTFC29S8S
truck stalls intermittently. anoter shop said it needs another injection pump. check engine light came on last week. thats when stalling started. plugged in snap-on scanner, after entering vin on scanner, scanner says communication mismatch. then say proceed p...
1999 Chevrolet Tracker 2.0L Surge VIN: 2CNBE13C4X
I tried a basic tune up, engine felt like maybe a misfire when I snap throttle in park just off idle, but does not feel like a misfire when driving, more like a surge at cruise. I checked the spark plugs and #1 plug porcelin looked a little different than the ... Trouble codes: P0455
1999 Chevrolet Tahoe LS 5.7L No Start, Misfire VIN: 1GNEK13R2X
Hello all. This one has got me. Vehicle came in thinking it needed a transmission. Test drove, was fine, a block away it started to chug-miss-backfire, got it back to the shop and starter would not catch the flywheel. Replaced the starter, cranks over but keep...
1999 Chevrolet Corvette 5.7L Cuts out VIN: 1G1YY22G0X
Vehicle idles fine, you can rev the engine in neutral. As soon as you try to drive the vehicle the engine stops dead! The drive line was removed to replace the flywheel and the problem occured after it was reinstalled. It was disassembled a second time to chec...
1999 Chevrolet Astro 4.3L rear differential
hello all, I am pretty sure i know the answer here, but just wanted to bounce it off a few others first. This is my personal vehicle. the rear differential front pinion bearing seized and caused severe damage to the diff housing. I am considering a low miles u...
2001 Chevrolet Impala 3.4L Starting VIN: 2G1WF52E21
Happy Holidays all... Just wanted to run this one past you GM guys out there... Every 2 or 3 days this vehicle will re-engage the starter briefly, just after starting. Has anyone seen this one?
2002 Chevrolet Avalanche 1500 5.3L steering VIN: 3GNEC13T82
hi techs, i have a customer with a problem with his truck wandering in windy weather. on calm days the truck works excellent. is there alignment problems with these vehicles or is the design of the truck itself.
2004 Chevrolet Impala 3.4L abs and traction control
car came in with abs light on and traction system on. scanned with no codes. but when i went to clear codes it went away...every thing ok...till next drive lights come back on and traction system on...makes it hard to drive with traction on. dont really know w...
2004 Chevrolet Trailblazer LS 4.2L No/limited four wheel drive VIN: 1GNDT13504
Hi all, thanks in advance. I've got a 2004 Chevy trailblazer in over the weekend. Customer complaint was of no 4 wheel drive, I took out for test drive and find it's not working quit right. All seems to work correctly, light for appropriate gear lights up when...
2003 GMC Savana 3500 6.0L speedo VIN: IGDGG31V33
I would like to know if someone can direct me as to why my odometer is of by 3.7% or 3.0 of ten miles or how to find out the source of the problem, thank you

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Riviera 3.8L alternator VIN: 1G4GD2211S
I would like to thank all you guys for your input most everyone advised test to do to verify computer problem. Well i replaced pcm and car is running great. Thanx again Mike
1998 Buick Riviera 3.8L No Start, MIL Lamp on VIN: 1G4GD2210W
Hello all. Car finally acted up again after 3 days of driving and running in the shop. Went to no start mode, 25 RPM KOEO, fuel pump on, injectors firing at 25 RPM. No crank sensor output seen with Vantage. Unplugged CKP sensor. Symptoms gone. Replaced CKP sen... Trouble codes: P0336 (Crankshaft Position Sensor Performance), P0341 (Camshaft Position Sensor Performance).
1995 Chevrolet Corvette 5.7L No Start VIN: 1G1YY22P9S
Thank you for all the replies. This one was towed to the dealership where the new Delco reman ECM was reflashed...to include the anti-theft information. I really got burned by this one...should have had the flash done at dealership to begin with
1997 Chevrolet C3500 Cheyenne 5.7L No Start, MIL Lamp on VIN: 1GBGC34R1V
The truck is finally fixed. The check engine light was finally taken care of by cleaning every single engine ground and all battery connections. With no check engine light I still had a no-start which ended up being a bad aftermarket coil. The coil that the la... Trouble codes: P1351 (ignition control circuit high voltage).
2000 Chevrolet Astro 4.3L Hesitation, backfire
I would like to thank everybody that took the time to offer thier help. The truck finally left today. After reading your posts I decided to take another look at the MAF sensor. If I disconnected it the truck still wouldn't run well, but it seemed strange th...
2002 Chevrolet Avalanche 1500 5.3L Cluster VIN: 3GNEK13T52
Well thank you for all of the great replies,after reviewing the information that I have recived I came to the conclusion its the bcm.After letting it sit for a 4 day weekend in 0 below weather it started great.Customer decieded to take the vehical and if it ac...
2004 Chevrolet Silverado 2500 6.0L Mechanical VIN: 1GCHK24U14
Thanks everyone for the great responses. The problem was a slightly plugged converter on bank 2. For some reason this affected cylinders 4 and 6 the most. I checked the misfires once again and 2,4,6,8 where all misfiring at high rpm but mainly only 4 and 6 a...
2002 GMC Sonoma SL 4.3L heater VIN: 1G5CS19W62
Heat is still less than expected but customer was happy. This after replacing heater core and customer reporting he could hear gurgling noise from the heater . I suspect Head Gasket. Thanks to all that replied. Merry Christmas
2002 Saturn Vue 3.0L No Start, Stall, MIL Lamp on VIN: 5GZCZ63BX2
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