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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 6, 2013
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1995 Buick Riviera 3.8L eng temp gauge VIN: 1G4GD221XS
1995 Buick riviera came in with the temp gauge inop and prndl on dash stuck on drive. the prndl i thank is the position switch on the shifter but the temp gauge ican't fix. I have ohm both uart data wires from the pcm to the instr. cluster both were .3 to .4 o...
2000 Chevrolet Venture 3.4L wiper function intermittent VIN: 1GNDX03E2Y
First thanks to all you iatners that took the time to look at this problem. now i have this 2000 venture that has given me a pain for the past year with these wipers. original concern was wipers no parking. (bad motor and top gear) replace wiper motor and top ...
2001 Chevrolet Tracker 2.0L Poor Idle Quality VIN: 2CNBJ13C31
Hey guys i am really stumped on this one,it is killing me!The t.chain broke on this thing and the owner put a new one on his self.once installed it ran but had a misfire poor idle and low compression on two cylinders.It was brought to me and we took the head o...
2002 Chevrolet Monte Carlo SS 3.8L Stall
Hello I have this 2002 Monte SS with a 3.8L. It came in behind a wrecker with a no start. Ckd codes and it had a P0101. Cleared codes and vehicle started. Ckd power, ground and signal at sensor with lab scope, looked good. Ckd wiring to ECM ok. Replaced pigta... Trouble codes: P0101 (MAF sensor)
2003 Chevrolet W4500 Tiltmaster W4S042 4.8L Shifting
I have a 2003 w4500 all the gauges stoped working, over drive light and indicator lights not working, does not shift when you put it in drive it just stays in the high gear if you manualy shift it drives fine
2005 Chevrolet Uplander LT 3.5L converter VIN: 1GNDV33L95
Transmission has loud whining sound, slow response when cold, and very burnt fluid. Code P0741. Do I replace trans or replace components? Please point me in a direction. Thanks al
2005 Chevrolet Malibu Maxx LT 3.5L Sterring VIN: 1G12S52FX5
The car came in for the power sterring issues that these had. Replaced tourqe sensor. Calibrated aligned. The problem is when you take off it has pretty bad tourqe steer. At first we thought the sensor. Started digging deeper and after ALOT of time and headach...
2008 Chevrolet Cobalt LT 2.2L air bag VIN: 1G1AL15F48
This car was in crash and air bags went off, customer replaced sdm module and air bags, now it has a code b0081 symtom 71 pps ,invalide serial data in the air bag module and so I scaned the passenger presence and it has lots of codes that wont clear, b0015 , 2...
2013 Chevrolet Silverado 6.6L Remote Start
I have a customer that has just purchased two of these trucks and would like for the factory remote start to be activated. They do not have the remote start key fobs. I know it can be added later on. My question is, is there a minimum number of remote start fo...
1999 GMC K1500 Suburban SLE 5.7L Misfire, MIL Lamp on VIN: 1GKFK16R5X
hello im matt from daves downtown conoco i am 19 years old and this is the first time were using iatn. yesterday this suburban came in with a misfire. first thing i checked the scanner for codes and just said po300 for the misfire so i went into data and seen ... Trouble codes: P0300, P0135, P0141, P0430
2001 Oldsmobile Intrigue GX 3.5L Cuts out VIN: 1G3WH52H81
Hey fellow technicians, I have a 2001 Olds Intrigue that has a ghost problem.Intermittently when coming to a stop the vehicle will stall out. Some times it will start right back up and most of the time it takes numerous tries to restart. The customer claims us... Trouble codes: P1372 (Crank sensor), P0300 (Random misfire)
2004 Saturn Ion-2 2.2L Stall, Misfire, MIL Lamp on VIN: 1G8AJ52F44
Car was towed in customer couldnt keep running. Has obvious misfire, installed know good coils and icm no change. Data shows no pulse signal on injectors 3 and 4. wiring shows good to ecm. Any ideas would be great. Trouble codes: P1599 (Engine stall), P0341 (Cmp signal), P0300 (Random misfire)

Fixes & Summaries for GM
Fix/Summary Answers
2008 Buick Lucerne CXL 3.8L No Start VIN: 1G4HD57298
Because we were never able to duplicate the problem once the circuit started working properly, the customer paid for the diagnostics we performed and picked up the car. But from the posts and my gut feeling I have informed the customer that if it occurs again... Trouble codes: P0230 (Fuel pump relay control circuit).
2007 Cadillac CTS 3.6L climate control VIN: 1G6DP57757
this one is fixed. i guess i got to many pages ahead in the book this is a single heater core system. dual zone system. heater core was plugged. flush the core several times. solved the problem. the way the heater core mounts makes the driverside lose heat as...
2002 Chevrolet Silverado 2500 HD 6.6L Surge VIN: 1GCHK23152
Thank you to all that responded to my request for help, The fix was a worn egr throttle plate shaft. When the throttle plate was commanded closed, due to the slack in the shaft It was going all the way closed past the stop screw not allowing any air to bypass ...
2003 Chevrolet Trailblazer North Face 4.2L ecm VIN: 1GNDT13S73
Okay so after doing everything i could possablily do or try, had a GM master tech come down 1 nite and help with the problem at hand, after several hours we found the problem, the bcm was flashed, but for some odd reason it didn't take the full program, so eve...
2012 Chevrolet Silverado 1500 LTZ 5.3L Misfire, MIL Lamp on
Thanks to all the techs that responded. I ended up going with my gut insticnt and repalcing the ecm and voila, the vehcile is fixed. Instantly o2 reading were correct for right side. I went through fairly extensive testing for all the wiring on the right side ... Trouble codes: P0300, P0175, P0059, P0060.
2007 GMC Sierra 1500 SLT 5.3L stereo VIN: 3GTEC13J17
sorry for late fix.we recommended to the customer a radio.one time we hit the top of dash and started working.replaced with factory replacement.works awsome.thanks for input
2001 Pontiac Grand Am SE 3.4L radio, inst cluster, exterior lamps VIN: 1G2NF52E41
found problem, previous repair was made at another shop hot wiring a feed from the power outlet to the resistor, once the blower motor was repaired properly it was backfeeding through the splice wire that went to the power outlet, found out it was repaired 4 y...
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