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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 25, 2012
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Open Help Requests for GM
Help Request Answers
2002 Cadillac Escalade 6.0L Transfer Case VIN: 3GYEK63N82
New customer for me so I haven't seen this particular vehicle before, no repair history in my shop. Customer experiences, and I do too, a hard "clunk", or "bang" on acceleration from what feels like beneath the driver floorboard. I'm aware of the TSB regardin...
1990 Chevrolet Cavalier Z24 3.1L No Start
hello all, this one kinda given me a fit, well car towed in for start and cut right off, checked had all signals required to start as it was doing the would loose signal to injectors reason cutting off stalling,,,checked to find injectors bad 4 out of 6 well b...
1994 Chevrolet Camaro 3.4L No Start VIN: 2G1FP22S6R
I have this 1994 Camaro that we are swapping in a LT1. Everything is hooked up. All connectors hooked up. The thing basically will not start. about every 20th time you crank it it fires up and runs great until you cut it off to re start. then no start. I'm not... Trouble codes: 82 (Shift Sel. A Circuit), 43 (ESC Module Circuit), 41 (EST Open)
1995 Chevrolet K3500 Cheyenne 7.4L Shifting problem VIN: 1GCHK39N2S
Vehicle came in because it was going into default (2nd Gear) at about 30-35 MPH. Scanned computer and found VSS reading erratic. Check VSS output at sensor with voltmeter, was low so replaced it. Still had the same problem, checked output from buffer to PCM, w...
2005 Chevrolet Equinox LS 3.4L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2CNDL13F95
Car came in last Friday night, customer comkplaint is the vehicle has VERY POOR fuel economy. MIL is Illuminated. Retrieved DTC;s; P0300- Random Multiple Misfire Detected. Used SOLUS-PRO Scanner to read live misfire data. Cylinder #5 is misfiring steadily.(eng... Trouble codes: P0300 (Random Multiple Misfire Detected)
2010 Chevrolet Equinox LS 2.4L electronic range select VIN: 2CNALBEW4A
One of my good friends has a equinox that his son had borrowed and when he got it back the ers mode did not work. I tried to get into it with my tech 2 and my ds708 and my genisys and found no codes in any computers and no data to support this function. It doe...
2003 Oldsmobile Alero GL 3.4L Hesitation, Surge, Cuts out VIN: 1G3NL52E63
Customer came in with engine knocking and 1 gallon of water in oil pan. Customer complained before noise came that engine was cutting out and surging from time to time. It would disconnect the cruise when this happened. Installed used engine with 45000 miles o...
2000 Pontiac Montana 3.4L Misfire VIN: 1GMDX03E7Y
Help! this van is driving us nuts. We swapped out the old engine with a fresh reman (old one had a broken piston skirt and making noise, but ran ok otherwise). Ever since the new one was installed, it has had a constant miss on #2 cylinder. We checked for vacu... Trouble codes: P0300 (Cylinder misfire)

Fixes & Summaries for GM
Fix/Summary Answers
2001 Buick Century Custom 3.1L 1-2 shift VIN: 2G4WS52J61
Thanks for all the help. we actually pressure tested as per tsb, that is what lead us to replacing the solenoid. per suggestions we disconnected connector at trans. and drove shifting manually. it still would not shift out of 2nd gear. the tfp on the scanner a...
2007 Cadillac CTS 2.8L Starting VIN: 1G6DM57T07
Simple enough. replaced starter and relay, problem is gone. I dont think i like the used car dealer cars. Uggg. Thanks again for all the help and assistance!
1990 Chevrolet S10 4.3L Poor Idle Quality, Surge, Cuts out VIN: 1GCDT14Z9L
First I want to say THANKS to Dan and all the others who replied! I took a day off from this truck to rest my brain. But anyway, I scoped the map and it looked good with no drop outs. I went back to the basics, hooked up a fuel guage and found the fuel pressur...
2001 Chevrolet Monte Carlo SS 3.8L No Start VIN: 2G1WX15K01
Thank you for all the replies. Pulled the gun and put a new bcm in and had it programmed, took care of all problems. Thanks IATN Trouble codes: B3031 (Security system controller in learn mode), U1064 (Lost communication with BCM), P1626 (Theft deterrent fuel enable signal lost).
2004 GMC Envoy XUV SLT 4.2L Rear Gate Glass VIN: 1GKET12S14
It turns out that I had no actual electrical aor mechanical problems with this truck. I had to have the roof and tailgate module positions re-learned with a GM Tech II scanner. My OTC Genisys would not do that. The data in both modules showed the same number f...
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