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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 21, 2014
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Open Help Requests for GM
Help Request Answers
2004 Chevrolet Monte Carlo LS 3.4L MIL Lamp on VIN: 2G1WW12E64
P0258 sets after car sits outside during the day and customer driving it home. Clear code and car kept inside overnight and code does NOT set until car left outside for the day. Ambient temperature cooling here in NJ. Coolant level dead on good, gauge seems to... Trouble codes: P0258 (low coolant temp)
2007 Chevrolet Express 3500 6.0L door locks VIN: 1GBJG31U17
Customer just bought a pristine used motor coach and during the first shakedown trip noticed that both front door locks only unlock regardless of which way the door lock rocker switch is depressed. Same problem exists when tried from either door lock switch....
2008 Chevrolet Cobalt SS 2.0L Excessive Emissions, Poor Idle Quality, Surge, Stall VIN: 1G1AP18X18
Hey everyone, I have a cobalt here that I have hit a wall with. The vehicle is very low miles, has been well maintained. Driving along the customer stated the car started to run ruff and surge. When he came to a stop it stalled. When he tried to start it, it w...
2011 Chevrolet Impala LS 3.5L abs VIN: 2G1WG5EK6B
I replaced this wheel bearing a second time for this same concern and the same DTC and symptom continue to reoccur. I've road tested vehicle while monitoring wheel speeds and they all seem to be reading ok. Any thoughts? Much appreciate your replies. Thanks
1992 Pontiac Firebird Trans Am 5.0L Stall
Thanks in advance. This car has an intermittent slow speed stall on decal. acts like slow IAC. Will catch itself most of the time and not stall. Only happens when warm and in gear. snap test on solus passes. TPS is new and non adjustable. Any ideas would be ap...
1999 Pontiac Grand Am SE 2.4L Poor Idle Quality, Hesitation, Cuts out, Stall, Engine Dies VIN: 1G2NE52T2X
Customer complains of low idle/ dying at intersections. RPM goes below 400, and on accelerating car will chug until it builds up RPM. Checked for vacuum leaks and cleaned throttle body. Car accelerates fine when cold or cruising speed.
2006 Pontiac Solstice 2.4L engine performance VIN: 1G2MB33B06
Customer brought the vehicle in because of a progressive performance issue. The car started "acting up", and gradually was spitting and sputtering. Now he says it is dangerous to drive due to a stalling problem. Driving it to the bay door was difficult, so a t...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Cadillac SRX 3.6L MIL Lamp on VIN: 1GYEE63784
Found and repaired damaged wiring harness located at the left rear of the engine compartment, at the frame close to the engine. Worn through to bare wires. Thanks for all the replies- most revolved around checking for loose grounds, chafed harness, or poo...
1996 Chevrolet C1500 5.0L Cuts out, Stall, Hard Start VIN: 1GCEC14M6T
Thanks for all the replies. Most replies dealt with the fuel spider, some with the fuel pump or lines. Alright, here's where we're at: Replaced the fuel spider assembly with MPFI kit. No change in starting problems, but it did fix a slight misfire at cruis... Trouble codes: P0135 (O2 Sensor Heater Circuit Bank 1 Sensor 1), P0154 (O2 Low Activity B2S1).
2004 Chevrolet Trailblazer LS 4.2L Misfire, MIL Lamp on VIN: 1GNDT13S94
Thank you all for the replies. This one has a little egg on our face as we jumped to conclusions before confirming the basics. After pulling the valve cover to inspect for broken or missing valve train components, we ran a cylinder leak down test. During that ... Trouble codes: P0302 (Cyl 2 misfire).
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