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Prev Professional Automotive Repair Technical Discussions for September 4, 2012
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Open Help Requests for GM
Help Request Answers
1995 Buick Park Avenue Ultra 3.8L No Start, Stall VIN: 1G4CU5215S
Good afternoon This car came in the shop for crank no start Check fuel pressure only had 20 p S I Installed new pump Pressure will go up to 50 pounds and then drop rate down to 0 Replace fuel pressure regulator And still do the same thing So I got another fuel...
2002 Buick Century Custom 3.1L no rear turn signals or brake lights VIN: 2G4WS52J82
I have no rear turn sigals or brake lights. Changed turn signal switch, checked bulbs and fuses. Have power out of brake light switch.
2005 Buick Rendezvous CXL 3.4L temp. gauge VIN: 3G5DA03E55
temp gauge works fine until it reaches halfway between 1/4 and 1/2 then it stops there until the temp on the scanner reads 220F then the gauge jumps to halfway between 1/2 and 3/4 during this hole time the temp on the scanner is working normally climing to 225...
2003 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHK23163
Hi Guys duramax here with no start intermintant towed in no start no code checked it craked no start hooked up scaner watched fuel rail pid was 2to 3 cranking so i cranked it longer to see if it would build it did as i craked till it started at about 40 now i...
2008 Chevrolet Silverado 1500 WT 5.3L TCC and circuit VIN: 1GCEC19J48
***THIS IS FOR INFORMATION ONLY TO HOPEFULLY HELP OTHERS OUT THERE FACING THIS SAME PROBLEM*** The transmission was rebuilt and various updates internally were completed. After the transmission was reinstalled the torque converter clutch (TCC) was noted to be...
2007 GMC Yukon Denali 6.2L ride control VIN: 1GKFK63807
Greeting fellow techs. Customer states that air suspension compressor comes on every time they start vehicle and comes on while driving which it never used to do before. On the scanner when the compressor comes on the actuator commands are all at zero. The pos...
2010 GMC Sierra 1500 SLT 5.3L MIL Lamp on VIN: 3GTRKWE32A
This pickup came in with a P0300-P0172-P0175. There was a missfire on #1 cylinder, replace plugs & wires, cleared codes & test drove. With the scanner hooked up monitoring the 02s everything seemed OK. Checked for vacuum leaks & none were found. Fuel trims wer... Trouble codes: P0172 (Rich Bank 1), P0175 (Rich Bank 2)
1967 Oldsmobile Cutlass 5.4L Misfire VIN: 338677M180
had a miss, worse when warm, had low compresson on cyl#3, had heads redone, compresson now good, still have miss, hard to tell, only going down the road, sometimes single miss, other times multiple miss and almost cuts out, what am i missing

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Park Avenue Ultra 3.8L Vses VIN: 1G4CU54154
Just so people know, this particular vehicle self centers each drive cycle, there is not a procedure to calibrate or align the steering wheel other than a normal alignment. The customer needed the vehicle and has not returned yet. When they do, I will update...
2001 Chevrolet Express 3500 5.7L Doesn't start VIN: 1GAHG39R11
No start, it was the fuel pump harness round plug, thats located in front of the fuel tank on the drivers side, of the transmission cross member which had bad connection. After repairing the connector the problem was solved. Thanks for the members that repli...
2003 Chevrolet Express 3500 6.0L Poor Idle Quality, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCHG35U83
hey thanks again for all the help, after playing with the wire harness long enough finally got the truck to act up all the time, got a code for map sensor, stuck high voltage and wasnt changing. computer was trying to compensate and that's why the trims were g... Trouble codes: P0101 (Maf sensor performance).
2007 Chevrolet Silverado 2500 HD LT 6.6L Right Front Wheel Sensor VIN: 1GCHC23697
We got this truck back in the shop on Friday and did as Al from Ontario suggested.We switched the left front and right front wires around in the EBCM connector and it came up with the same code.That confirmed that the EBCM was bad internally.We replaced it and...
2007 Chevrolet Cobalt LS 2.2L Evaporator case VIN: 1G1AK58FX7
Hey guys Mathew from California hit it on the head. I had already fixed it by the time I read his reply, but it was correct. Thank you to all who responded you are all great. I split the heater core case at the bottom. Then you have to find a tube heading to t...
2003 GMC Sierra 3500 6.6L Stall, MIL Lamp on VIN: 1GDJK34193
Thanks for all the help, Fuel Injector Control Module (Driver Module) took care of the problem. Just a matter of trusting your tests and following the flow chart, as well as accessing this website for similar problem vehicles and the knowledge base. A used uni... Trouble codes: P0374 (Timing Reference Signal A No Pulses).
2007 GMC Acadia SLT 3.6L Cuts out, Stall VIN: 1GKEV33737
unfortunatly we were unable to find any problems or fixes. our next step was to start replacing parts which we do not support, therfore we sent it to the dealer for further diag. Thanks to all of you who replied.
2003 Saturn Vue 3.0L no power steering VIN: 5GZCZ63B73
I could never find out exactly wher the steering module gets the information to let it know when the vehicle is running, the customer didn't want to put much money into the vehicle because they ere going to sell it so they took it back. I would assume the stee...
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