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Prev Professional Automotive Repair Technical Discussions for September 25, 2013
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Open Help Requests for GM
Help Request Answers
1996 Cadillac DeVille 4.6L 2-3 shift VIN: 1G6KD52Y0T
Looking for input from auto tranny guys.This is my Pops car.Not very familiar with the 4T80E trans but have worked on a lot of other gm auto trans.Anyway,the problem was 1-2 shift was fine,no 2-3 shift and no 4th.When scan tool said 4th,trans either was droppi...
1996 Chevrolet K1500 Cheyenne 5.0L turn signals/hazzard VIN: 1GCEK19M3T
Thanks in advance for your time,The turn signal fuse #16 will pop as well as the stop/haz fuse #1 but at different times,PLEASE read carefully so you understand-the fuses only blow when you use the turn signals OVER 55 mph.If you were to put the turn signals o...
2005 Chevrolet Silverado 2500 HD 6.6L emmissions VIN: 1GCHK29275
this truck smokes black if you get in it or when you are going down highway you can see black puffs, soon as you get off highway and touch the throttle lots of smoke. no codes, i have replaced the fuel filter air filter mass air flow sensor turbo, new jasper e...
2007 Chevrolet Corvette 6.0L air bag VIN: 1G1YY26U57
the air bag light was on there was four codes for the seat belt pretensioners driver and passenger tried to clear codes they came right back gave car back to body shop said replace both pretensioners they brought car back after repairs with air bag light blink...
2007 Chevrolet Silverado 3500 Classic LS 6.6L Excessive Emissions VIN: 1GCHC33D47
this 07 classic duramax smokes black at idle and runs rough, has a miss and an injector knock. truck runs and drives and has plenty of power. smoke never stops. no air restrictions. you can hear turbo spooling. scanner shows misfire codes on 3,5,6, only. stops...
2008 Chevrolet Trailblazer LT 4.2L Starting VIN: 1GNDT13SX8
customer stopped to get gas then the vehicle would not start. sometimes it will start and run for about 3 seconds and die. most of the time the starter won't work at all. We are getting a u1301 code that won't clear and we can't communicate with the body modul...
2008 Chevrolet Trailblazer LT 4.2L Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GNDT13S18
This vehicle came in with symptoms of running rough no power stalling out and check engine light on and reduced power light on. Has P0651 stored in computer. The problem is it is very intermittant when it happens. The three times it did happen where on start u... Trouble codes: P0651 (Loss of 5-volt reference Circuit 2)
2004 Pontiac Aztek 3.4L Instrument cluster VIN: 3G7DA03E34
We installed a reman GM instrument cluster in this vehicle. It does not have ABS or traction control. The ABS, brake, Traction light and service traction control message appear on the cluster. There is a procedure provided with the cluster to install on vehicl...
2006 Pontiac Grand Prix GXP 5.3L ebcm VIN: 2G2WC58C06
co236. ebcm ???

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Rainier CXL 4.2L Mode Door VIN: 5GADT13S14
Well after some more thinking on this problem I wondered if the other shops that worked on it took the actuators off & got mixed up. I called GM & asked for part numbers for a/c heat & defrost motors. Sure enough they were swapped. The new one on ac heat be...
2005 GMC Sierra 1500 SLE 5.3L Keyless Entr VIN: 2GTEC19T15
Sorry this took so long, I was trying not to give up on it. I thank all of you that tried to help with this truck. FYI...I did also try a new BCM and programming in case the PDCM sends a signal to the BCM to carry out the function but still no response from t...
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