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Prev Professional Automotive Repair Technical Discussions for September 10, 2012
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2002 Buick Rendezvous CXL 3.4L ac compressor VIN: 3G5DB03E02
this rendezvous came in with ac inop originally after we replaced the battery. searched and found issues with the bcm getting stuck in a logic lock so we disconnected the battery shorted the cables together and then it worked fine. came back a week later same ...
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1988 Chevrolet P30 Step-Van 7.4L Charging VIN: 1GBKP37W3J
My own rv [of course] the electrical system isn't charging the coach batteries. After much tracing of cables, I found that the small solenoid located in the electrical box under the hood is not being told to come on. There are 3 solenoids in this box, one for ...
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1997 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1GNDT13W8V
1997 chevy blazer P0300 missfire counter reads miss on 5 and 4 real bad barley runs replaced cap rotor plugs wires checked compression and fuel pressure customer said it ran fine and thought she bought some bad gas replace fuel filter and drained tank filled w... Trouble codes: P0300
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1997 Chevrolet Cavalier 2.2L Engine VIN: 1G1JC1241V
After replacing head gasket (performed elsewhere) the car will fire and sometimes idle but very rough and if you try to push the accelerator it will die totally flooding the engine. If you try and fire it up again it will hydro lock the engine. I replaced the ...
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1998 Chevrolet C2500 Cheyenne 6.5L Stall VIN: 1GCGC29F3W
Thanks for any help in advance. Im changing a fuel solonid driver on a 6.5 and i pull the old one off and there isnt a chip in the plug in on the old driver. Ive only done a few of these and all the previous ones have had this chip in the plug in. Is this some...
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2000 Chevrolet Blazer LS 4.3L transfercase VIN: 1GNDT13W5Y
The problem I have with this particular vehicle is that all of the lights on the 4WD selector switch stay on. So the vehicle is stuck on 4WD all the time. After doing some electrical testing and follwing procedures from mitchell I was unable to pinpoint the ex...
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2003 Chevrolet Silverado 2500 HD 6.6L fuel line VIN: 1GCHK29193
Working on a 2003 K2500 pickup with diesel engine. Usually don't work on diesels but this truck was dropped off with fuel leak. Lines severely rusted and leaking at connection from fuel tank to frame lines. Impossible to remove steel line from quick fittings d...
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2006 Chevrolet Tahoe Z71 5.3L Hesitation, MIL Lamp on, Reduced Power, Locks VIN: 1GNEK13T56
Hi everyone, and thanks in advance for your help and for taking the time to read this. We've got a bit of a situation with this Tahoe that has us stumped so far... We are a used car dealer/repair shop that specializes in Volvo, but we took this Tahoe in trade... Trouble codes: U0107 (Lost communication with Throttle Actuator Control TAC Module), U1000 (Class 2 Datalink fault), C0244 (EBCM control valve/PWM delay torque fault), C0240 (EBCM fault/PCM indicates TCS fault), C0196 (Yaw rate circuit fault), C0455 (Steering wheel position sensor fault)
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1977 GMC C15 Sierra Classic 5.7L Cuts out, backfire/exaust VIN: TCL447Z515
hey people, this is a head scratcher... we dropped in a new 350 crate eng.,with new edelbrock 600 cfm 4bbl,(EGR blocked), performer edelbrock manifold,full tune up, ie... cap,rotor,plugs,wires,fuel,air,LOF. customer brought truck back with complaint it wasn't ...
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2002 GMC Sonoma SLS 4.3L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GTDT13W12
misfires only on left bank, no misfires on right happes through rpm range only has one cat for vehicle, short term fuel trim +35 lg term -8 injector pulse width running for right bank4.7 for left bank 8.9 at idle. Why the difference and why oly one bank misfir... Trouble codes: P0300, P0440
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2002 GMC Sierra 2500 HD SL 6.6L Mechanical VIN: 4X4FCAE202
Thanks in advance for all the help. Truck came in running bad no power miss firing. Scand found code po202 and p1249 Check injector wiring harness but did not find any thing. Truck has lots of miles. From what i can tell i need to replace the injector wiring h...
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2008 GMC Sierra 1500 WT 5.3L Mechanical VIN: 1GTEK19J38
I have an oil leak, which appears to be engine oil, coming from the area under the battery on the inner fender on this truck. The engine and trans themselves are dry, but this is pushing enough oil out to stick to the tailgate after a highway trip. A/C drier i...
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Fixes & Summaries for GM
Fix/Summary Answers
2007 Chevrolet Equinox LT 3.4L stabiltrak VIN: 2CNDL63F77
WELL GUYS I HATE TO SAY IT BUT I HAVE NOT YET COME TO AN ANSWER ON THIS ONE. UNFORTUNATELY THE CUSTOMER CALLED AND SAID IT HAS NOT HAPPENED AGAIN SINCE WE SCANNED IT AND SHE DOES NOT WANT TO GO ANY FURTHER ON IT. SHE IS A GOOD CUSTOMER SO IM SURE IF IT DOES RE...
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2008 Chevrolet Express 3500 6.0L Hesitation, MIL Lamp on, No Power VIN: 1GAHG39K58
After rechecking all the wires and eliminating them as a cause it pretty much had to be the ECM as a few of you suggested. Dealer had more than one in stock which is always a good sign. Installed the new ECM programmed it and the truck runs great! I couldn't s... Trouble codes: P0325.
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2002 GMC Envoy XL SLT 4.2L oil pressure gauge VIN: 1GKES16S72
THANKS FOR EVERYONES RESPONSE!!! WE ENDED UP CHANGING BOTH FUEL PUMP & REGULATOR WITH A THROTTLE BODY CLEANING AGAIN. TOOK CARE OF THE PROBLEM.
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2001 Oldsmobile Silhouette Premiere 3.4L Heater Case VIN: 1GHDX13E11
Custmer dont want to spend money to take the heater case apart and repair. when the weather gets hot he will be back
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2002 Oldsmobile Silhouette Premiere 3.4L Surge VIN: 1GHDX03E02
Thanks to all who responded. The EGR scan data was normal, the fuel pressure and volume checked OK, and the PCM has been updated recently (sorry that wasn't in my original post). I'm quite sure the problem is that the engine has some internal noises that I am ...
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