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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 8, 2010
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Open Help Requests for GM
Help Request Answers
2004 Cadillac CTS 3.6L all power windows VIN: 1G6DM57764
The driverside window intermittently works. when its does it will operate all windows. switches from the other windows only work to put the window up only after the driver window switch pushes them down. Code u1000 as well as u1016 found loss of communication ...
1995 Chevrolet C2500 Suburban 7.4L compresser VIN: 1GKGC26N35
ac wont shut off
1999 Chevrolet Malibu 3.1L ck oil light VIN: 1G1NE52M1X
Gentelmen, I have not encountered this light before. At times, seems random, sometimes hot sometimes cold, a light on the cluster will turn on, Check engine oil. There is plenty of oil, it seems quite clean for a car with this many miles. The oil pressure is g...
2000 Chevrolet Blazer LT 4.3L No power VIN: 1GNDT13W5Y
This vehicle came in with no power, we checked back pressure and found in too high. After replacing the cat the truck ran good but now it's back with no power. At wot the fuel system goes lean [fuel pressure stays at 58 psi at wot] and even running on motor va...
2001 Chevrolet Silverado 1500 LS 5.3L Starting VIN: 2GCEC19T41
I had a customer come in and ask me to put on the lock cylinder housing that his buddy at the chevy dealer told him it needed for a B2960 stored in BCM and a P1631 stored in PCM and security light on steady while driving. It did not crank for him one time but ...
2005 Chevrolet Silverado 3500 6.6L No power VIN: 1GCJK39255
I cleared the codes and the thing runs fine till lite comes back on. I checked the fuel rail pressure regulator codes and found the ignition 1 circuit had burnt connection on the bottom of EDU repay in the fuse box. it ran fine for 12 miles and back to the sam... Trouble codes: P0090 (Fuel pressure regulator circuit), P0089 (Fuel pressure regulator performance)
2005 Chevrolet Uplander LS 3.5L rear suspension VIN: 1GNDV23LX5
This van make a big noise when we hit a bump or a hole in the road. the air suspension is working fine ,the sound is comming from the left rear wheel we try a lot of thing like rear schocks swamp galiper fixed fuel tank more screwed tryed to put more air in th...
1994 Pontiac Bonneville SE 3.8L No Start VIN: 1G2HX52L6R
car towed in for no start car died on hwy.coolant full plenium ok. fuel presure good,pressure reg.good, spark good,has injector pulse,it wants to start.acts like plugged exhaust or out of time.removed 02 sensor still no start.unplugged maf still no start. did ...
2002 Saturn L300 3.0L gear selection VIN: 1G8JW54R22
Good Afternoon, This is a fun one this saturn won't act up long enough to perform any solid diagnostics/pinpoint testing. The vehicle will start and run properly without stalling, however once in awhile the customer can't get the shifter to come out of park. ...

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Regal GS 3.8L Prndl Indicator, Radio Lights, Heater Control Ligh VIN: 2G4WF55182
thanks for the replies but the customer hasn't come back with the car again yet. i had 2 people suggest the body control module and 1 person suggest the headlight switch. i guess when he comes back it will be trial and error.
1994 Chevrolet S10 Blazer 4.3L Poor Idle Quality, Surge VIN: 1GNDT13W1R
Thanks once again to all. Was reminded about how important fuel pressure was and also how it is best to use an ACDELCO pump in these units(I agree!). Double checked fuel pressure and was at 61 PSI running. It was suggested to get more scan data which I should ...
1998 Chevrolet S10 2.2L oil every where VIN: 1GCCS144XW
Ok well we had conflicting information. Some says theres a pcv valve and says theres not. Well we pulled the intake boot off and there is a metal tube going from the boot into the top of the valve cover. We found a tsb for new valve cover assy to cure the oil ...
2001 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality VIN: 1GCHK24131
After pulling the bad injector, we noticed a small piece of rust on the top of the injector. We pulled the fuel filter & found more rust. Looking in the filler neck, it was full of rust. Suggest to the customer to replace the filler neck & clean tank. He decli...
2004 Chevrolet Tahoe LS 5.3L Radio VIN: 1GNEK13Z24
Thanks to all that replied. Because of the 4th of July holiday and being burried beyond control, I just got the vehicle back in yesterday to finish the repairs. The fix was a used replacement radio. I ordered it from Replacement Radios. I was able to reprogra...
2005 Chevrolet Silverado 2500 HD 6.6L Head Gaskets VIN: 1GCHK23245
Thanks for the replies. Stewart from Texas had the accurate answer I was looking for. It's going back together now along with a new turbocharger. Both head gaskets were leaking coolant externally. The heads didn't need replacing and were prepared as per the GM...
2006 GMC Canyon SL 2.8L Starting VIN: 1GTCS13616
Dear fellow techs. The fix was to replace lock cylider housing which comes with the ignition switch.The key sensor is part of this assemble.After replacing housing I reprogamed keys and all is well.
2002 Oldsmobile Alero GX 2.2L OBD II monitors VIN: 1G3NK52F2C
thanks for all the repiles Christopher from Virginia had the 1st correct fix the B1S1 O2 wasn't defective enough to set a DTC but defective enough to pevent the o2 & cat monitors from running. I install a new B1S1 o2 and the monitor ran 1st try and passed!
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