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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 19, 2014
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Open Help Requests for GM
Help Request Answers
2005 Chevrolet Cobalt 2.2L immobilizer light VIN: 1G1AK52F05
Hi all I have this 2005 Cobalt which came in for a "NO START". I noticed the security light was on so I programmed the system and the vehicle started. The problem I'm having is the MIL stays on. Pulled codes and found B3031 Security system controller in learn ...
1999 GMC Jimmy SL 4.3L No Start VIN: 1GKDT13W0X
This truck is one of my great customers son,s truck. It came in with a hard start mostly cold but customer all so complained of long crank times when warm. 6 or 7 times trying to start it and matting the pedal to get it to start. The pm on this truck is great ...
1968 Oldsmobile Cutlass Supreme 5.7L wont shift out of first gear VIN: 336678M233
Car came in with a shudder upon takeoff and a slip between 1st and 2nd gear.Pulled pan and found bottom covered in silver sludge. removed trans and found band metal to metal against drum.Replace drum and band. overhauled trans with new clutches and seals. clea...

Fixes & Summaries for GM
Fix/Summary Answers
2008 GMC Sierra 2500 HD WT 6.6L No Start VIN: 1GTHK23628
Got the problem solved. Much thanks to Doug from Michigan. I checked the resistance at pin 6 and 14 of the DLC and had 120 ohms. Back to basics and went over everything I did that might cause an open in the data wiring. Found terminal X107, one of the larg...
2004 Pontiac Grand Prix GT2 3.8L Hesitation, Stall VIN: 2G2WS52274
The fix was replacing the MAP sensor. The MAP readings always looked acceptable, however the long term fuel trim was almost always taking fuel away (-15 or so). Plus on the test drives, it was burning alot of gas. I decide to replace the fuel controlling senso...
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