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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 12, 2011
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Open Help Requests for GM
Help Request Answers
1991 Chevrolet V1500 Suburban Silverado 5.7L Idle VIN: 1GNEV16K3M
This has me banging my head! Just installed a crate motor. (91 threw a rod bearing bad) Bought a crate motor that only has 8000 miles on it. The new motor is an earlier model block (1976 dipstick on driver side). Swapped 91 heads (less than a year old) and int...
1994 Chevrolet K1500 5.7L Hesitation, Surge, Stall VIN: 1GCEK19K5R
Customer states vehicle when first starting bucks and stalls and lacks power. Unable to duplicate problem because he goes to work at 4am, when it is coldest. I have removed distributer to look for worn gears, replaced binding EGR and have unsuccessfully tried ...
2002 Chevrolet Silverado 2500 HD LT 6.6L No Start VIN: 1GCHK29102
Hi there. I have a very strange problem. This truck will intermittently not start, or start and stall. The vehicle will start if you manually pump the primer button and then be fine for about a week. Customer usually notices it in mornings when going to work, ...
1998 GMC C3500 Sierra SL 7.4L fuel gauge VIN: 1GDKC34J2W
Sweep test with tech 2 gets gauge to respond. Does anyone know what we should see going into and out of balance module (fuel level in & fuel level out circuits)? Gauge shows approx 1/4 tank yet senders indicate nearly full.
2003 GMC Envoy SLE 4.2L Electronic VIN: 1GKDS13S13
no blower fan front intermitantly high speed only. we have replaced the speed controller abs abd brake light come on when fan high speed is on and then goes out when fan quits all by it's self...Thanks to all for any help with this.
2003 Hummer H2 6.0L auto ac VIN: 5GRGN23U53
customer complaint was ac only cools as low as 60 degrees and noise on acceleration, found bulletin for ac compressor noisy on accel with belt damage, verified noise on accel and high side psi was fluctuating rapidly, replaced ac compressor/ reciever dryer, or...
2000 Oldsmobile Alero GLS 3.4L MIL Lamp on VIN: 1G3NF52E7Y
Car failure smog inspection with check engine light on.repaired camshaft sensor reset check engine light.Drove couple days check pending codes nothing, check monitors continuously[ misfire,fuel system, and comprehensive]NOT SUPPORTED.Non-continuous MONITORS NO...
2001 Saturn SL2 1.9L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, Poor Fuel Economy
Customer compaint is bad gas milage, claims to get 19 mpg. Car is running very rough. LTFT"-9" STFT"10" it idles with a miss fire. Decided to install new igntion wires, the old ones were in pretty tough shape. After we started it back up it was running even wo... Trouble codes: P0440

Fixes & Summaries for GM
Fix/Summary Answers
1987 Cadillac Allante 4.1L Anti-Theft System VIN: 1G6VR3176H
Well guys, this was as easy as pulling a fuse to eliminate antitheft. After rechecking wiring diagram realized that if I remove power to Theft Deterent Module it might cancel security. Hardest part of this all was locating module. Had to pull glove box out, th...
2003 Cadillac DeVille 4.6L Misfire VIN: 1G6KD54Y03
Welll it ended up being a chaffed wire for the coil cassette. I ended up putting 4 inline spark testers and when the 5&6 clylinder fired it fired both at the same time. All help responses got me to this point and got me to cover the basics which sometimes get ... Trouble codes: P0300.
2000 Chevrolet Camaro 3.8L No Start VIN: 2G1FP22K1Y
thanks to everybody,the problem was in the key,went back to the dealer,got the key reprogramed .it cranked and started.i think they give me the wrong key to start with,caused me to loose alot of sleep the resistance in the key was wrong.the key and lock was th...
2001 Chevrolet Cavalier LS 2.2L MIL Lamp on VIN: 1G1JC12411
2005 Chevrolet Silverado 2500 HD 6.0L master cyl VIN: 1GCHC24U75
Subject: 05 Chevy Silverado 2500HD 6.0L 2WD Pedal goes to floor on hard turn, left or right. Truck has off road wheels and tires and aftermarket suspension lift kit. I did ABS diag.-no codes-auto bleed,-pressure bleed, complete system / replaced wheel hubs ...
2005 Chevrolet Silverado 2500 HD 6.0L Fuel gauge, Oil Press. Gauge, Charge Light etc. VIN: 1GBHK24U45
Didn't get a lot of feedback on this one. I tried unhooking all add-on electrical items on the truck and didn't help. Also replaced the battery to no avail. It turned out to be a faulty BCM. Thanks
2007 Saturn Vue Green Line 2.4L MIL Lamp on VIN: 5GZCZ33Z87
Well guys let me tell you what i found. I looked for water and accident dammage and found none, so I check for chaffed wires around purge solenoid bracket that was ok, as I was sniffing around I found two bundles of wires breaking out of the harnesS by the t-b...
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