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Prev Professional Automotive Repair Technical Discussions for September 23, 2014
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Open Help Requests for GM
Help Request Answers
2008 Buick LaCrosse CXL 3.8L Bcm
This is a different kind of post for you Good Wrench dealer guys. Have done lots of programming with my Tech2 and Tis to Web subscription. As y'all know, when you program a BCM you get one shot at getting the vehicle options right or you buy a new BCM. Most of...
2007 Cadillac SRX 4.6L Mechanical VIN: 1GYEE63A07
OK GUYS I HOPE YOU CAN HELP AND THANKS FOR THE TIME This car came in with oil all over the bottom of the pan and cust. complaining of a oil leak . So first i cleaned it up and let it run on the lift for 30 mins. in gear and it did not leak a drop . Next i test...
1993 Chevrolet Corvette 5.7L No Start VIN: 1G1YY33P8P
we got this car from another shop,engine shuts off after 15 minutes running,no spark,no injector pulse,wont start untill next day,when it starts we have 12v,good ground and 5v references to distributor and good signals from distributor,as soon as it quits we h...
2009 Chevrolet Traverse LTZ 3.6L Incorrect Vent & Temp. VIN: 1GNEV33D79
HVAC Vent Temperature Control is not functioning properly. I have determined the Mode Door Actuator is no good as I have removed it, pulled the cover off & found a burned spot on the circuit board. I could smell it when removed. While removed I reached up behi...
2010 Chevrolet Express 2500 4.8L Misfire, MIL Lamp on VIN: 1GCZGFBA0A
even pulled valve cover to check valve springs - did cyl leak down - only 10% leak on #1 . did see tsb for valve cover. but blocked vacuum to it still had miss. did cylinder balance test - #1 did not change. used tech 2 to perform injector balance test also. a... Trouble codes: P0121, P0300, P0172, P0175, P0301
2001 GMC Yukon XL 1500 Denali 6.0L Misfire VIN: 1GKFK66U01
Thanks in advance for any help on this vehicle, it came to us from an other shop, it missfires on cylinders #2 and #7 at idle on misfire data .when take off idle still show miss but not as much as does it on idle.when power brake the engine show no misfire.onc... Trouble codes: P0300 (Multiple cylinder miss fire)
2003 GMC C4500 Topkick C4C042 6.6L No Start, Stall VIN: 1GDE4E1103
ok first off I have no business working on this truck besides that it is my fathers purchase for his plowing business. here It goes truck bought out of state and delivered to my shop off truck. first test drive revealed a pretty noticeable skip in the motor a... Trouble codes: P0380
2005 GMC Sierra 2500 HD SLE 6.6L No Start VIN: 1GTHK23285
Hello iATN Techs, This diesel truck runs normal and is not setting any codes. After a heat soak it will crank and not start. If I cycle the fuel primer on the filter housing the truck will then start. If the vehicle sits over night after a no start, it will st...
2006 Pontiac Grand Prix 3.8L distance to empty/fuel guage VIN: 2G2WP55216
hi everyone this grand prix had came into the shop for an intermittent stall condition. after checking the car out I had determined that the pcm was at fault the throttle body also had been replaced before the pcm. now that the car does not show any symptoms o...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Buick LeSabre Limited 3.8L Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G4HR54K53
sorry it took me so long to close this request got swamped with other work. but here it is it goes to show to go with your gut . most of you were right it was a bad maf. goes to show that even dealers get bad parts. the original replacement maf was from the de... Trouble codes: P102.
1999 Chevrolet Express 3500 6.5L Stall VIN: 1GCHG39F0X
thank you everyone for your advice and help!!! It was the PMD driver once again. I changed the driver and the resistor and the vehicle has worked wonderful for over a week now.
2006 Chevrolet Express 3500 4.8L Misfire VIN: 1GBHG31V56
wow fellas, thanks for all for all the replies, It was the spark plugs after all this, reason I replaced them is because matco has this bad ass tool to check coils & spark kilovolts etc, it measures all that, things may look and function well as per our eyes r... Trouble codes: P0171, P0300, P0420.
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