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Prev Professional Automotive Repair Technical Discussions for November 23, 2010
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Open Help Requests for GM
Help Request Answers
1997 Buick Skylark Custom 3.1L Vat VIN: 1G4NJ52M9V
I have a 1997 Buick Skylark that I am having problems with the VAT system. We have had the instrument cluster repaired and the car will not relearn the key. Is there anyone who might know how we could bypass the system?
2004 Buick Rendezvous CX 3.4L Steering Wheel VIN: 3G5DA034E4
There is an intermittant vibration felt in the steering wheel mostly when making right turns. It also can be felt when parking the vehicle and the steering wheel is moved slightly. It is accompanied by a slight whine. System was flushed using BG products. Coul...
1990 Cadillac DeVille 4.5L Hesitation, Misfire VIN: 1G6CD5331L
I have ths Cadillac that feels like it is missing when hot under a load. Replaced the cap rotor wires coil spark plugs. The customer brought it to the dealer they said the egr valve was bad I put in a egr valve and it is still doing the same thing. Fule psi is...
2000 Cadillac DeVille DTS 4.6L Unknown VIN: 1G6KF5792Y
I hace a problem where the stability system is activating on turns. The vehicle first came in with service stability system light on and code for steering position sensor. I replaced the position sensor & road tested. That took care of that problem. Now it is ...
2003 Cadillac Escalade ESV 6.0L MIL Lamp on VIN: 3GYFK66NX3
Hello, vehicle came in running poorly with misfires on both banks, left side was worst so we replaced left side cat pipe. Still have misfires on right bank, pulled pipe away from manifold and misfires go away, so obviously needs right side cat pipe. This custo...
1968 Chevrolet El Camino 5.0L techometer VIN: LC3AR47A00
for some reason the tach. seem to be reading double. not sure of electrical connections other than hooked up on tach. plug on dist. stock tach inside car. thanks in advance Randy
1985 Chevrolet K15 Blazer 6.2L Starter VIN: 1G8ED18J0F
When you connect the batteries the starter is engaged. I have checked for power at the ignition switch and have 12 volts. The wire is yellow. Follow the wire and it is spliced into 3 purple w/white wires. The enable wire at the starter always has 24 volts. I l...
1992 Chevrolet LLV 2.5L Poor Idle Quality, Surge VIN: 1GBCS10A2M
We had this post office Chevy LLV, which is a S10 2.5L, that came in with a surging problem. After extensive diagnosis we found that the vacuum had an erratic reading both at idle and under throtle @2000rpm. The needle would bounce between 5-20inHg. We confirm...
1995 Chevrolet C1500 Silverado 5.7L Electronic VIN: 1GCEC14K55
i have this chevy pick up we rebuilt the trans and and it left with no problems, it came back a few months later and the customer was complanig of it shifting hard when i drove it worked good for about 10miles then it started shifting hard i had max linepressu...
2000 Chevrolet Cavalier 2.2L Headlights/DRL VIN: 1G1JF5244Y
Please Help! This vehicle came in for a list of repairs & now I can't get away from it. Hopefully this is the last issue to fix. If you start this car & put it in gear the DRL indicator light in IPC blinks & the DRL relay clicks until the service/wrench light ...
2002 Chevrolet Trailblazer LTZ 4.2L 4wheel Drive VIN: 1GNDT13S22
Hi everyone. Got one that is stumping us.. Vehicle came to shop with no 4 wheel drive, the wife stated that the 4 wheel drive light switch stayed on bright one day then flashed and the next day the light went out and no 4 wheel dr.. Scanned computer and found ...
2003 Chevrolet Silverado 1500 5.3L Electric Window key fob door locks VIN: 1GCEK19T03
Thanks everyone in advanced. I have an electrical nightmare here. On the passenger side door the door locks will not work, the power windows do not work, and the keyless entry does not work. So ok send it to the dealer and have them reset the PDM. The only pro...
2003 Chevrolet Cavalier LS 2.2L battery/alternator VIN: 1G1JC53F43
thanks in advance to all who reply. i have a 03 cavalier 2.2l that isnt charging properly. we replaced the alternator but problem still persists. checked cable from starter to battery: good. checked lead from starter to alt: good. checked ground @ eng block an...
2004 Chevrolet Trailblazer LS 4.2L Flywheel VIN: 1GNDT13SX4
Dealership has replaced transmission twice before it came here. I replaced flywheel, they diagnosed it. When removing trans., bolts that went to oil pan were removed and part of the oilpan (ears)came off both sides. I showed cust. They took broken parts to dea...
2006 Chevrolet Impala LT 3.9L abs VIN: 2G1WC58156
Gm techs, need help on this one. Has trac control error message on dash. Set code c0561 - system disabled invalid serial data received. Mitchell does not have this trouble code diagnostic routine, so im wondering is this a common problem or do i need to send c...
1998 GMC Savana 3500 6.5L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall VIN: 1GTHG35FXW
I got this van from the dealer. They said it needed a new injection pump. I gave the customer a estimate and had the pump rebuilt locally. The van does the same thing. It will start and run cold but once it warms up after 20 to 30 minutes it dies and won't r...
2002 Saturn L200 2.2L Misfire VIN: 1G8JU54F32
Issue at hand is misfire at idle cyl number 4. Original diag was compression 70 on cyl four dry test and went up to 180 wet test. However, off idle skip went away and emissions cleaned up. Cyl power balance under load almost even with other cyls. Car sat head ...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick LeSabre Custom 3.8L high idle VIN: 1G4HP52X1V
Well first of all thanks to all of you that took time to answer this post, I know your time is valuable and I do appreciate it. This car is successfully back on the road. After cleaning the Iac bore and throttle plate, I did a hard reset by disconnecting the b... Trouble codes: P0507.
2001 Buick Century Limited 3.1L Odometer VIN: 2G4WY55J01
Many thanks to all that replied. AS previously mentioned, the gas guage problem is a bad sender in the tank. As for the odometer, it is a bad cluster. Most of you mentioned that some of the resistors break off or the circuit board breaks. This is my conc...
1995 Chevrolet G20 Chevy Van 5.7L Cuts out, Stall VIN: 1GAGG35K2S
OK to all and thanks for taking the time- I finally after tune ups broken IAC and Map sensors got the pump to go to 5 PSI while it was tinkering with 9 and 10 we changed it and the truck runs excellent. This was a disaster for the lack of a better word in te... Trouble codes: 22 (Tps), 33 (Map).
2004 Pontiac Grand Prix GTP 3.8L Misfire VIN: 2G2WR52454
You guys nailed it! It was carbon tracking. After replacing the wire, the misfire on my scanner and the car went away. The customer called me the next day and said the problem was back. Turns out the left front wheel speed sensor wiring was bad causing the tr...
2006 Pontiac Torrent 3.4L Misfire VIN: 2CKDL63F86
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