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Prev Professional Automotive Repair Technical Discussions for June 6, 2012
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Open Help Requests for GM
Help Request Answers
1994 Chevrolet Blazer 5.7L Electronic VIN: 1GNEK18K2R
vehicle wants to upshift way to soon. torque convertor locking in way too soon. no codes. scan data shows transmission starting out in first and when stopping returning to first. convertor engaging and disengaging just way to soon. when testing first thing thi...
1998 Chevrolet Express 1500 5.0L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GBFG15M7W
Vehicle came in running terrible. Scan of the system turned up only p0300 random misfire. Using the scan tool only seem to have a proble on cylinders 2 and sometimes on number 8. All other cylinders are not showing a misfire. New plugs, distributor, ignition w... Trouble codes: P0300 (Random Misfire)
1999 Chevrolet Blazer 4.3L fuel pump VIN: 1GNCT18W6X
Good evening to all, This vehicle quit a week ago at a supermarket, no start. Customer let sit for an hour, tried again and it started. Drove it to my place, left it here for a day started everytime, 60lbs fuel pressure. Picked up the vehicle and took it home ...
2000 Chevrolet Silverado 1500 5.3L No Start, MIL Lamp on VIN: 2GCEK19T0Y
Hi everyone. thanks for taking the time to help. This chevy came in on the hook. the original complaint is that the vehicle has been running worse and worse for about a year now. however the customer only uses it in the summer to tow his boat on long weekends ... Trouble codes: P0101, P0300, P0336
2008 Chevrolet C5500 Kodiak C5V042 6.6L engine
This is an odd one. Engine appears to be making oil, up 2 inches on the stick in about 3 weeks time. Do not smell diesel in oil, when doing the "Halo" test on a piece of brown paper, does not look like diesel, no "Halo" Just took an oil sample and will send ou...
2007 GMC Yukon XL 1500 SLT 5.3L engine oil VIN: 1GFNC130X7
Hi Gangs. Engine oil level of this vehicle is way too high after 500 mile of driving ( couple quarts surplus) , we checked fuel pressure regulator and injectors and spark plugs for leakages, no obvious sign of leak.the oil does not smell like gas , trans oil l...
2003 Pontiac Bonneville SE 3.8L vibration and leaks VIN: 1G2HX52K13
The first time we saw this vehicle was about 4000 miles ago. The customer brought the car and a cv boot and asked us to replace the broken boot. As it turned out the boot was the wrong one and we recommended a new shaft. Installed a new CV shaft on the right s...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Chevrolet Silverado 1500 5.3L security VIN: 2GCEK19T41
vehicle is fixed. had several replies as to how to perform relearn which i had done a dozen times with no change.what fixed vehicle was a passkey sensor. checked for battery voltage at sensor on red/white wire , checked for ground at orange wire, then checked ...
2004 Chevrolet Suburban 1500 LS 5.3L Cuts out, Stall, MIL Lamp on VIN: 3GNFK16Z04
after replacing computer finally got truck to hit fuel cut off went for test drive started stalling on turns instead of intermittently found bad spot in steering wheel everytime it hits it kills the engine going to start diag on steering colum believe it has s... Trouble codes: P0336.
2004 Chevrolet Trailblazer LS 4.2L low beam headlights VIN: 1GNDT13S64
Hey guys, well, it took a B C M AND then both solid state relays turned out to be faulty ! We verfied we were not getting groune signal from B C M to the solid state headlight low beam relay pin 5 in underhood power distribution center, then after replacing an...
1997 Geo Metro 1.0L Cuts out VIN: 2C1MR2265V
Thanks for all the replies to this request,Unfortunately the customer decided to park this vehicle at this time.
2000 GMC Sierra 1500 SL 4.8L Misfire VIN: 2GTEC19V8Y
Wow such a great response.In the end it was valves sticking.Thanks for all the great ideas.Put engine flush through twice then changed to high grade oil and all is well. Trouble codes: P3000.
2004 GMC Sierra 1500 SLE 4.8L abs VIN: 1GTEK19V64
We sure appericate all the great replys.In the end it was a lot of you ideas and ours together that finally fixed it. We removed front pads and slides and cleaned all parts that would move.Replaced rear rotors and pads and cleaned slides. Bleed the brake syste...
1991 Pontiac Firebird 3.1L No Start, Cuts out, Stall VIN: 1G2FS23T9M
thank you for all the input. we did try a new prom first as it was the cheapest route to go first (got used prom from good running engine). it did not correct the problem. we checked the resistance of the injectors in at the front connector by the intake. ... Trouble codes: 33 (Map sensor voltage high).
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