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Prev Professional Automotive Repair Technical Discussions for July 5, 2009
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Open Help Requests for GM
Help Request Answers
2004 Buick Rendezvous CX 3.4L Unknown VIN: 3G5DB03E34
This rendezvous while cornering there is a "moan/vibration/groan noise from underneath. I'm pretty sure it is coming from the rear diff area. This truck is an all wheel drive also. The noise is only there when you turn the vehicle. Sorry for the lack of info b...
2004 Chevrolet Aveo 1.6L electric windows VIN: 67Y7U78IU7
Hello all, I have an issue with a Chevy Aveo that has a sporadic issue with the window fuse blowing. There is no ryhme or reason just out of the blue the window fuse pops on any given window. They are all fused on one 30 amp circuit. Any common issues out the...
1999 GMC Jimmy SL 4.3L back light display on dash, climate contrl, radio VIN: 1GKDT13W5X
Illumination lights not working. Interior lights like dome and floor work. Does have factory remote door locks and that works as well as delayed lighting. Found headlight switch to be bad with no evidence of bad wires. Replaced headlight switch and everything ...
1999 Oldsmobile Alero GL 2.4L Hesitation, Stall VIN: 1G3NL52TXX
Please help. This car stalls intermittently when coming to a stop. I looked at it last week, could not duplicate problem. There ate no codes, datastream looks OK. Air filter OK. Alt charges fine. A/C cond fan operation OK.I cleaned the throttle bore and IAC. T...
2001 Pontiac Firebird Formula 5.7L altenator VIN: 2G2FV22G81
This came from another shop where they replaced the altenator due to p/s pump leaking in it. The pump was also replaced. They first used a pep boys alt then a/c delco both only lasting a week or 2. I checked grounds and voltage to the altenator. I am getting a...

Fixes & Summaries for GM
Fix/Summary Answers
1984 Chevrolet Corvette 5.7L evaorator VIN: 1G1AY078XE
I bought a later model evaporator and relocated the cycling switch to the accumulator. Works like a champ. Thank you to all that responded.
1999 Chevrolet Astro 4.3L MIL Lamp on VIN: 1GCDM19W4X
Thanks to all who replied. As suggested I checked the 5 volt ref, and signal return circuts. All was well no shorts, or opens. I was able to swap ECM"S from antoher Astro van and found the ecm was not the problem. The only thing left was the EGR valve. I repla... Trouble codes: P0405 (egr circut low voltage).
2001 Chevrolet Malibu LS 3.1L No Start VIN: 1G1NE52J81
Thanks to all who had responded. I had replaced the ignition keylock cylinder and did a relearn procedure on the security system. When replacing the ignition switch keylock I did notice a slight powdery metal shavings from the ignition switch. car starts up ev... Trouble codes: B2965 (key in ignition fault), B2960 (passlock cyl data incorrect), B1000 (ECU malfunction), U1128 (loss of IRC communication).
2004 Chevrolet Astro 4.3L No Start VIN: 1GNEL19X54
Thanks to those who responded. The used ECM did indeed need re-flashed at a dealer as suggested by Burton [...]., but first I performed the Theft Deterrent relearn procedure that Burton was kind enough to send me. It started ...
2002 Oldsmobile Bravada 4.2L Poor Idle Quality, Stall VIN: 1GHDT13S32
I received 3 replies for this. One said to check fuel pressure regulator for leaking. No problem there. I asked about a possible IAC problem. This system does not have an IAC, but is controlled by CTS,throttle body and computer. Last reply brought up the quest...
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