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Prev Professional Automotive Repair Technical Discussions for October 11, 2012
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Open Help Requests for GM
Help Request Answers
2001 Cadillac DeVille DHS 4.6L air bag VIN: 1G6KE57Y91
I have this caddilac with an air bag light on codes boo29 passenger side right front loop open and code b0087 right rear loop open, have checked connectors to the sdm and seat connectors no corrosion or problems found, modis shows very little data to go on, tr...
2004 Cadillac CTS 3.6L No Start VIN: 1G6DM57734
vehicle towed in for no start condition. ran normal diagnostics and came up with a bad PCM. Replaced pcm and did a reflash, vehicle started and ran normal, problem solved. went to do the VTD relearn through the pass thru pro, seemed to run through fine, and no...
2000 Chevrolet Blazer LS 4.3L no 4wd low range VIN: 1GNDT13W7Y
Hi There i have a fault with the Autotrac system in that it does not engage 4wd low or Transfer case neutral. also the dash display does not show all of the gear lever positions ie PRND2L only shows R D L we have a donor vehicle which is the same and have sub...
2003 Chevrolet Express 2500 6.0L Cuts out, Stall VIN: 1GCGG25U63
The customer has complained that the engine cuts out at idle upon stopping in traffic. It restarts immediately and can cut out before the traffic light turns green but not always. It can cut out this way several times in a trip. I finally got it to act up on m... Trouble codes: P0171 (System too lean bank 1), P0174 (System too lean bank 2)
2003 Chevrolet Silverado 1500 5.3L Cuts out VIN: 2GCEK19T43
Installed new pedal position assy due to past experience with them going bad. No joy. vehicle came back with same problem. Alldata does not give the desired % that the items need to match so i don't know where to look next. Trouble codes: P1516 (TPS/APP Difference)
2004 Chevrolet Suburban 1500 LS 5.3L tire light VIN: 3GNFK16Z94
Have this suburban that has a tire light on and a check tire message in the instrument cluster display. First attempted relearn of all sensors. Vehicle went through relearn procedure and all sensors came on line and read correct tire pressure.Took for test dri...
2003 GMC Sierra 1500 SLE 5.3L Wiper VIN: 2GTEC19T23
Vehicle came in with wiper motor not turning off. checked switch,checked all wires,install redundant ground, ohm wiring, ordered motor, new motor runs but will not park.My test show the new motor is bad, tried another new motor same results, test again and my ...
2004 GMC Sierra 2500 HD SLE 6.6L Turbo VIN: 1GTHK29224
This ones for the Duramax techs, please help! This vehicle came to me for a check engine light & cutting out under accleration. I have codes P0046 & P2563 for turbo control issues. Under acceleration this truck will cough & cut out as if the boost is going awa...
2006 Pontiac Grand Prix 3.8L cel VIN: 2G2WP55206
i can command the air pump and air pump relay through solus, im thinking stuck closed egr. car runs fine smooth operation just keeps shooting cel
2005 Saturn Vue 2.2L MIL Lamp on VIN: 5GZCZ23DX5
hi everyone, i have this saturn vue thats sets po455, i have smoked the system two times i have have replaced the vent valve.purge valve. gas cap. i have 1-5 volts fuel tank pressure sensor no visable smoke no leaks,, has any else had one like this.thanks Trouble codes: P0455

Fixes & Summaries for GM
Fix/Summary Answers
1992 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Stall VIN: 1GNFK16K1N
First of all, thank you to all of those who replied. All of your ideas were great! I ended unplugging output nipple of egr control solenoid and left it off, returned vehicle to customer. Customer has been driving vehicle on short and long trips for a week n... Trouble codes: 33 (Map sensor voltage high).
1994 Chevrolet K2500 Suburban 6.5L Rear A/C VIN: 1GNGK26F6R
We decided to take a chance and go ahead and replace the rear evaporator core even though we had flushed it out and now the system is working fine. Thanks to all who responded to this problem.
2003 Chevrolet Malibu LS 3.1L Hesitation, Surge, Misfire VIN: 1G1NE52J23
I have a digital recordable vacuum pressure gauge that helps in times like this. just sitting in the stall, did a throttle snap and gauge goes past 5 psi in a blink of an eye. She had the cat put on at a muffler shop, called me today and can't believe the powe... Trouble codes: P0404 (EGR Performance).
2008 Chevrolet Cobalt LS 2.2L Mechanical VIN: 1G1AK18F48
OK Thanks everyone. Car is 4 days out of extended warrenty. Customer is on hold.
2010 Chevrolet Express 1500 4.3L fuel pump VIN: 1GCUGADXXA
We found under the fuse box there are three connectors. The black connector with 4 wires had a broken pin that guess what... went to the fuel pump. Apparently there is a bulletin for this that I got the Chevy dealer to send me. I'm not sure why its not list...
2000 Saturn LS2 3.0L Engine Oil in coolant VIN: 1G8JW52R4Y
Thanks for all the great replies, sounds like the oil cooler is common problem based on all the replies, I had just never come across it yet, removed the oil cooler and pressurized and sure enough it was leaking, replaced oil cooler, flushed out cooling system...
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