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Prev Professional Automotive Repair Technical Discussions for January 5, 2012
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Open Help Requests for GM
Help Request Answers
2002 Cadillac Eldorado ETC 4.6L Cuts out VIN: 1G6EC12962
Customer has brought vehicle in a few times over past 2 years complaining of an intermittent stall. Every 5,000 to 8,000 miles this will happen and will lose multiple power sources (dash lights, engine, headlights, radio) and alternator light comes on. Clock s...
2001 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC52451
Car was towed in with a no start and no check engine light on at all tryed to check for rpms and can not get the scanner to turn on checked all fuese and founded one not good replaced it and scanner came one but can not lenk to the PCM tryed three scanner and ...
2006 Chevrolet Malibu Maxx LTZ 3.5L No crank No Comm VIN: 1G1ZU638X6
Called in for a no crank no comm from pcm. PCM is the last module in line on the bus. Customer stated that the vehicle came in with the ground wire to the pcm burned out and the ground pin in the pcm pulled out with the connector. He then purchased a new conne...
2002 Pontiac Grand Am GT 3.4L Misfire, MIL Lamp on VIN: 1G2NW52E02
I have had this car for a while now and im out of ideas. Has a random mis code and 1 is the worst also 2 and 5 but they were only missing 2-7 times verses 335 that cyl 1 was showing. It doesnt appear to leak coolant and if it were only number 1 I would probabl... Trouble codes: P0300 (Random mis)
2004 Pontiac Grand Prix GT2 3.8L No Start, Stall VIN: 2G2WS52244
hey guys, This car originally came in with a stalling issue while going down the road. With the car running i tapped next to the ignition switch and the car stalls, so i changed the switch and sent the car. The next day the car came back for cranking no start... Trouble codes: U1096
2006 Pontiac Torrent 3.4L headlights VIN: 2CKDL63FX6
Thanks for the help in advance. I have an 06 torrent with a 3.4 l. It dims the headlights upon acceleration. Kinda backwards i thought. Battery tests good, as well as starting and charging system are working. Alternator is about 15 months old and pushing 14.6 ...
2007 Pontiac G5 2.2L speedometer VIN: 1G2AL15F27
This vehicle wouldn't shift gears.Scanned with tech2 and TCM wouldn't communicate.Checked Pin30 IGN 1 voltage,Pin31 B+ and pin49 Ground.All good.Replaced TCM with a used module.Now have communication with TCM.Car still won't shift and Power steering control mo...

Fixes & Summaries for GM
Fix/Summary Answers
1994 Chevrolet C1500 5.7L Electronic VIN: 1GCEC14K6R
Thank you all for your assistance in fixing this problem. The EGR plug was plugged into a loose harness connector. My tech had told me that when the vehicle's motor was exchanged, the vehicle had no no plug to the EGR solenoid. So off I went to every other...
2000 Chevrolet Malibu LS 3.1L Poor Idle Quality VIN: 1G1NE52J9Y
finally guys the madness is over. Remenber guys did it i tell you the car is coming from another garage well this end up to be the throttle body gasget they replaced the gasget and used the incorret one.The one they used was covering the air passagge not al... Trouble codes: P0650.
2002 Chevrolet Venture LS 3.4L Passenger side axle seal leak VIN: 1GNDX13E22
After lots of good ideas we verified that the leak is just one of those odd problems. After pricing a new housing we elected to replace the transmission with a GM reman due to the mileage. Thanks for all the good ideas.
2003 Chevrolet Tahoe LS 5.3L Headlamps VIN: 1GNEK13T03
Thanks for all the help. The fix ended up being from a tsb PIC4812. I could'nt find in alldata it took some digging to find it and most of the ones i found all were different numbers.basicaly what you do is put a termnial in the D postion of the four cavity c...
2007 Chevrolet Suburban 1500 LT 5.3L No Start
Thanks for all your help. I decided to follow Michaels advice and check all powers and grounds to the BCM after doing so I called the dealer for a new BCM which they had on the shelf (usually a good sign that there are issues with them) Installed BCM programme... Trouble codes: B0790, U0140.
2010 Chevrolet Silverado 2500 HD WT 6.0L airbag VIN: 1GC4KVBG2A
Thanks for all the advise. Problem was water laying on floor boards and the wire harness had rubbed through and was shorting out causing fuse to blow. Also had to replace module due to grounds being corroded and overheating module.Module was located in between...
2003 GMC Yukon Denali 6.0L radio VIN: 1GKEK63U93
Leave it to modern cars to make a real dummy out of you. This truck came from the auction. As it turns out, somebody had previously had an aftermarket radio in it, then put the original radio back in before sending it to the auction. The problem is, they plugg...
2005 GMC Yukon Denali 6.0L Coolant Temp VIN: 1GKEK63UX5
thanks for the ideas, looks like the pcm is the problem as we thought. will send to dealer for replacement & programing.
2003 Pontiac Grand Am SE 3.4L Misfire, MIL Lamp on VIN: 1G2NF52E33
The lower intake was cracked on that runner. Fuel trims never showed a vacuum leak. No amount of carb cleaner or propane would find the leak on the outside of the motor. I remove the rear valve cover and added smoke to the intake. Seen it instantly. Thank you... Trouble codes: P0300.
2006 Pontiac G6 2.4L MIL Lamp on VIN: 1G2ZF55B76
There is a big distinction between MY problem and the CAR's problem. MY problem was the reading of the failure in the data list. I aquired an ecm from another car, installed it and flashed it to match the car. TECH 2 shows the same faults. I checked AGAIN ... Trouble codes: P0420.
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