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Prev Professional Automotive Repair Technical Discussions for March 3, 2014
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Open Help Requests for GM
Help Request Answers
2002 Cadillac DeVille 4.6L Tcc VIN: 1G6KD54Y52
customer drove for 21 months with no problem. vehicle started to buck while driving down highway. customer stopped and when she started driving again, it would not change gears. she pulled over and shut vehicle off. then, vehicle would not crank - so she towed...
2006 Cadillac Escalade 6.0L radio volume VIN: 1C12WG1GGH
I have a previous Flood vehicle. It has a Navigation Radio. Everything works EXEPT there's no sound? When you turn the volume button or press the control on the steering wheel nothing comes up on the radio visually like it's trying to adjust? I'm not sure if i...
1982 Chevrolet Corvette 5.7L soft brake pedal
This 1982 corvette is driving me nuts. So the vehicle has been sitting since 1997. It came in due to a soft brake pedal, when applying the brake, the pedal went to the floor and the red brake light came on. I found three out of the four calipers were leaking f...
1999 Chevrolet Corvette 5.7L Hard start. VIN: 1G1YY22G9X
Customer just purchased this vehicle. Fuel pressure drops off immediately after the pump shuts off. I plugged the return line on the fuel filter and the pressure still drops off. I disconnected the fuel line from the fuel rail and checked the pressure at the l...
2001 Chevrolet Silverado 3500 LS 6.6L lacks power VIN: 1GBJC34131
This truck came into our shop with leaking head gaskets and injector sleeves. It had no driveability concerns. We removed the heads and sent them to the machine shop for pressure testing, resurfacing (.005"), and valve job. We reassembled with "C" head gaskets...
2007 Chevrolet Silverado 3500 HD LT 6.6L MIL Lamp on VIN: 1GBJC34647
This truck has been trying my patience for a week or so now it sets the p0101 code after a few min. of idle time then goes into reduced power mode . I have changed maf sensor with oe twice, new oe air filter smoked the intake and inner cooler with no signs of ... Trouble codes: P0101
2001 GMC Sierra 2500 HD SLT 8.1L blend door VIN: 1GTHK23691
The story with this one is a few monthes back you could only have full heat or full cold nothing in between. Replaced interior ambient air temp sensor and all was well for a month or so. This vehicle has automatic controls(not dual climate though) and a few we...
2002 GMC Sierra 1500 SL 5.3L Heater vent VIN: 2GTEK19T12
Hello,, this 2002 k1500 has noticeably cooler air coming from center vents than from floor or defrost. Leaving temp control at mid setting you can switch from floor to vent and have a noticeable temp change. floor and defrost feel the same. Have flushed heater...
2007 GMC Sierra 1500 WT 5.3L 2-3 shift VIN: 2GTEK13MX7
what is a common problem that causes a no up shift 2-3 and of course no 4th. trans fluid is fine, no harsh treatment. no codes. I would just like to direct the owner as I do not do transmission repair work any more.

Fixes & Summaries for GM
Fix/Summary Answers
2004 Cadillac CTS 3.6L No Start Key Stuck in Ignition VIN: 1G6DM57764
Rechecked everything on the replies and was good, took to the dealer to get re-flashed and everything works fine. Thanks.
2007 Cadillac SRX 3.6L key VIN: 1GYEE63717
I really don't consider this fixed. needs a ecm customer decided to trade it in. what a stupid system
2004 Chevrolet Silverado 1500 LS 5.3L internal transfer case VIN: 2GCEK13T64
Thanks for all the replies. Several had indicated possible universal joints but they were checked several times and no binding found. We have not been able to look further into this vehicle at this time. Customer will bring back in a few more weeks as he will ...
2005 Chevrolet Cobalt SS 2.0L No Start VIN: 1G1AP12PX5
I found no power to pcm. I found a 50amp fue in the trunk near the battery that was blown. It looks like someone jumpered the stero amps off the power feed here witch blew the fuse i guess. Installed new fuse and all is good now.
2011 Chevrolet Express 3500 6.6L pnp, causing no start VIN: 1GB6G5B16B
this vehivle had been at a local dealer for a rear freeze plug under warranty. they removed the trans and must have broken the connector on the trans and put it back in with gm white gasket sealer. the red and black wire had been probed through the insulation ...
2009 Pontiac G3 Wave 1.6L Fuel System Lean VIN: KL2TX65E39
we replaced the spark plugs and the pre o2 sensor cleared the codes. Road tested and ran much better. Scanned the car after and noticed better pre o2 readings. .2 -.8 they were .2 -.6. Gave the car to the customer and he drove it on the weekend and said his f...
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