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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 10, 2007
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Open Help Requests for GM
Help Request Answers
1989 Chevrolet Camaro RS 5.0L Poor Idle Quality, Poor Fuel Economy, no timing advance VIN: 1G1FP31E7K
I have a strange on here this car runs great at high RPM's, but it takes a while to get there. there is no timing advance happening in the system. has a decent ruise and high rpm with the timing at 24 degrees but very slow to gain rpms. i have checked the 4x r...
1999 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, Stall, Poor Fuel Economy VIN: 1GNDT13WXX
hi there this started out to be minor and got worse noticed poor gas mileage and did tune up with no change in mileage often hesitates and stumbles had i 1 mil pop up for system lean bank 1 but it smells rich and just this week i smelled rotten egg and a rattl... Trouble codes: P0171 (fuel trim system lean bank 1)
1995 GMC Jimmy SL 4.3L Cuts out, Stall, Misfire VIN: 1GKDT13W0S
This vehicle is my daughter's. The vehicle will exhibit a miss or jerk while driving down the road. This only happens when the motor warms to operating temperature. It will miss several times and if you let off the accelerator, it will completely die. You can ...
2004 GMC W3500 Forward W3S042 4.8L Compressor VIN: J8DB4B1464
This was brought in as an add on to an insurance claim that was taken care of at a body shop but they don't do ac. Customer say AC worked fine until Vehicle damaged. It came in with no refrigerant. I did an evac and vacuum test and it passed vac test. Next I p...

Fixes & Summaries for GM
Fix/Summary Answers
1980 Cadillac Seville 6.0L Poor Fuel Economy VIN: 6S699AE705
Hi Colleague's, Thanks for all your help, it's hard to get the right info for such old American cars in Europe, unless it's a Chevy. The car seemed to have an ECM, so maybe it is a 1981 car after all, I pulled the green connector, grounded it and adjusted the ...
1999 Cadillac Catera 3.0L gas tank slow fill VIN: W06VR52R0X
Thanks to all for your help. The only parts that are outside the tank are the vent valve and filter, which are both ok. Filler neck is not removeable. I told the customer that it needs a tank and they declined the repair. Big $$$. If I fix it some other time, ...
2000 Pontiac Grand Prix GTP 3.8L Unknown VIN: 1G2WR5211Y
The fix was replacing the control unit. For whatever reason the old unit was not letting the blend doors shut all the way. The replies were very helpful. After the repair, added an extra .25lbs to get [...] out center vents. However, the outside temp still...
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