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Prev Professional Automotive Repair Technical Discussions for November 15, 2011
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Open Help Requests for GM
Help Request Answers
2000 Buick Park Avenue 3.8L locks/mirrors/windows VIN: 1G4CW52K8Y
Followed complete electrical circuit.i have good grounds @ all 3 modules.ddm /pdm/rm.c/k generic buss line/lite blue wire,continuity to all three modules.class 2 buss line also fine.No communication with ddm module through Tech2.Where am i going wrong.Any help...
1994 Chevrolet K2500 Cheyenne 7.4L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1GCGK29N3R
Hi all, we have tried everything on this truck. It is almost exactly the same as the post from Chuck Rush May 8, 2009. The truck came in with a faulty fuel pump. We changed it and repaired a cracked PCV hose to get it running. It will stall right after startin...
1999 Chevrolet Blazer 4.3L T Case VIN: 1GNDT13W0X
Auto 4WD & 2WD light on all the time, no codes. Push 4WD high or low and lights blink, t-case control module clicks and you can hear a clunk from encoder. The 4WD high or low light will flash for a while and then go back to Auto 4WD light only or Auto 4WD and ...
2001 Chevrolet Silverado 1500 HD LS 6.0L connector body VIN: 1GCGK13U61
This vehicle has a factory oil cooler. There is a brass threaded plug that has an o-ring, it goes into the body of the hose assembly that fits flat up to the engine block by the oil filter. This is a manifold looking assembly, much like an AC manifold that att...
2002 Chevrolet Avalanche 2500 8.1L crank sensor VIN: 3GNGK23G62
best way to remove broken crank sensor
2006 Chevrolet Malibu LT 2.2L Stall, Misfire VIN: 1G1ZT51F56
this car came in misfiring on cyl 1 &4,replaced module after testing car ran good for 3 days,came back misfiring on cyl 1&4 replaced coil module & ignition module,ran good for 3 days came back misfiring on cyl 1&4,removed autolite spark plugs & replaced w/ac p... Trouble codes: P0301, P0304
2003 GMC Safari 4.3L steer box VIN: 1GTDM19X23
Hello I replaced power steer pump and pressure hose because of a leak . I then ran van with wheels off the ground tested for leaks , found none , tested power steering seemed great , lowerd van and backed out and discoverd no power steer or brakes. Raised van ...
2010 GMC Acadia SLT 3.6L Power Steering VIN: 1GKLVMED0A
Hey guys.. Here's my odd problem. I have this 2010 Acadia that just got passed its warranty. At idle the steering wheel is soft and has good ease to it. As soon as you press the gas pedal and get the RPMs above 1000-1500 the steering turns rock solid and as y...
1994 Pontiac Trans Sport 3.8L No Start VIN: 1GMDU06L5R
Job went like silk, but cranks with no start, no spark, no injector pulse. New cranks sensor, no rpm signal. Ran coming into shop. Found 4 ground wires broke under icm.1 powers up fuel pump.I have both injector wires hot on front injectors.When unplug injector...
2006 Pontiac GTO 6.0L Inner Tie Rod VIN: 6G2VX12U26
I can not find a inner tie rod for this rack and pinion oem says service in rack and pinion only. GM guys is this true. not servicable.thanks in advance

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Rendezvous CX 3.4L rf wheel VIN: 3G5DA03E84
Iam puttting thhis in the fixed file, but cust only wanted what could be the problem??? The replies were Very helpfull, Here are some of them. Bad cailper pins, wheel bearing, rotor out of line, possible bad wheel, these are the most popular, I know that the w...
2005 Buick LaCrosse CXL 3.8L headlamps VIN: 2G4WD53205
The car came into me with intermittent headlights. We all know how much we love intermittent problems, they can cost the customer a lot of money and of course we usually eat some time as well. I would like to thank all of the I.A.T.N members for taking the t...
2003 Cadillac CTS 3.2L whine VIN: 1G6DM57N73
without making you read 1000 words of junk---the person that installed the aftermarket pump had kinked the cross over feed tube to the other side. now the 1000 words of junk---I did try duplicating the issue with a battery charger but to no avail. It was a ...
2004 Cadillac SRX 4.6L right side low beam VIN: 1GYDE63A14
Thankyou to the members who respondeded. As I stated in my post we had power and grounds coming into the ballast(I called it a module) no power leaving the ballast. I switched the complete assembly from left to right and the low beam lit. I then switched the b...
2007 Cadillac Escalade ESV 6.2L Drivers Heated Seat VIN: 1GYFK66817
1986 Chevrolet C30 Custom 7.4L shifting VIN: 1GCHC34W3G
I had been thinking governor as most suggested.Had recently had governor replaced elsewhere for no shift.Gear wasn't stripped according to customer,the end with the weights was loose and flopping around.I had a 400 in the shop that I have rebuilt for another v...
2001 Chevrolet Impala 3.8L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 2G1WF55K01
Thanks to everyone for the help, was able to obtain a used OEM MAF sensor from another car and that cleared it right up, will not be buying aftermarket MAF sensors anymore. Trouble codes: P0102 (MAF circuit Low), P0171 (Lean bank 1).
2003 Chevrolet Impala 3.4L No Start, Cuts out, Stall, MIL Lamp on VIN: 2G1WF52E93
After wasting no less than 7 days agonizing over this pos and following alldata diagnosics to the letter- only to lead to a false diagnosis- I found the solution by swapping parts(like a true shadetree mech). It needed a new(used) ecm, even though the supply ... Trouble codes: P0336.
2004 Chevrolet Tahoe Z71 5.3L transfer case VIN: 1GNEK13Z84
Thanks to everyone that responded the fix was a new transfer case computer.
2002 GMC Envoy SLE 4.2L blower motor VIN: 1GKDT13S32
We took the Throttle body off the vehicle and cleaned it. This fixed the problem. I thank everyone who commented, your feedback helped a lot. Thank you all.
1998 Pontiac Grand Prix GTP 3.8L No Start VIN: 1G2WP1219W
Inspected crank sensor connector and wiring looks to be in good shape. Just went ahead and replaced the crank sensor car now starts and runs as should. I will be reading TechHelp postings to try to help others as you guys have helped me. Thank you
2003 Saturn L200 2.2L Dome Lamp, 3rd Brake light VIN: 1G8JU54F93
First of all let me say thanks to everyone that responded. This is an invaluable tool. It turns out tat I pulled part of the headliner down and traced the wiring loom of the third brake light and done lamp down the right pillar to the passenger kick panel and ...
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