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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 26, 2008
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1996 Chevrolet K3500 Cheyenne 7.4L convertor lock up VIN: 1GCHK33J3T
im posting this one for my buddy. he stopped in with his 96 chevy dually with a complaint of the speedometer not going over 50mph and not being able to pass anyone on the highway over this speed. i didnt get a chance to diagnose it yet, but i drove it on the h...
2004 Chevrolet Classic 2.2L No Start VIN: 1G1ND52F34
Ok here, We go car came in on a hook some time back... and start everytime. keep it for 3 days, never had a problem.1/21/08. we did a fuel filter at that time for maintenance only. Todat it came in on a hook again, 4/25/08. this time it would not start! Good I...
2001 GMC Savana 3500 5.7L battery light VIN: 1GCHG35R11
Hello fellow IATN members. Van was towed in to us with dead battery. Installed new battery and checked the charging system. Charging system was low and not charging, battery light on dash was on for about 10 seconds then goes out for about 4 seconds then comes...
1998 Pontiac Grand Prix GTP 3.8L 2-3 shift VIN: 1G2WP1211W
Car drives well but seems to shift from 2nd to 4th when driving. There no codes and if you wern't looking for third you probly would never notice that car skips fron 2nd to 4th on accell. When watching on scanner I can see all solenoids being commanded on and ...

Fixes & Summaries for GM
Fix/Summary Answers
1989 Chevrolet Camaro Iroc-Z 5.7L engine
Well, I finally fixed this one. Turns out that it just needed a valve job. Found the problem with a cylinder leak down test. Every cylinder had at least one leaking valve. I'm not sure why the vaccum was low, but steady. Maybe close to equal leakage? The custo...
1999 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 2GCEK19T8X
There is no consensus opinion regarding this problem. I have gone to the library and used their Mitchell resourses. The owner of this vehicle is not pressing for a quick resolution and it is on the back burner. I thank all of you.
2000 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH55K6Y
I wanted to thank everyone who replied,Glenn is right! The crank sensor is bad ,there was no damage to the sensor or wiring,just time for a new sensor. Thanks Marty
2001 Chevrolet Silverado 1500 5.3L continues VIN: 1GTEK19T51
WHOA, WHOA,!!! 33 replies and counting, too many to answer back with thank you's. Let me start off by saying that this truck was not in MY shop. A friend of mine has it in his shop and he does not understand the power of the IATN and the NET. When I called him...
2004 Chevrolet Malibu LT 3.5L Compressor VIN: 1G1ZU54874
Thanks to all who took the time to help. After reading your overwhelming support that the compressor was the problem I ordered one up along with an accumulator and a new expansion valve. Changed all the parts, flushed the condenser and the evaporator, charg...
2001 GMC Savana 3500 5.7L oil pan VIN: 1GDR631R11
Thanks to all those who told me it was a quick fix because it was. Didn't have to take anything off. Loosened flywheel cover and took off oil pan. Thankful I didn't listen to those who want me to remove mounts,exhaust,oil lines,lift motor, vary unnecessary. Th...
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