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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 29, 2012
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Open Help Requests for GM
Help Request Answers
2003 Cadillac CTS 3.2L Speedomoter VIN: 1G6DM57N03
All steering wheel switches working normal -- all brake & clutch switches working normal -- when driving on freeway cruise will dopr out & speedo sometimes reads + or - 10 mph from actual -- found a code p0704 which is non existent in mitchell or identafix -- ...
1998 Chevrolet C3500 Cheyenne 5.7L Hesitation, Misfire VIN: 1GCHC34R5W
can anyone tell me where the vacumn that is applied to the fuel pressure regulator comes from or thru . this vehicle has set for 6 yrs . their is no change in fuel pressure when the engine is revved . Trouble codes: P0101
1999 Chevrolet K1500 LS 5.7L MIL Lamp on VIN: 1GCEK19R9X
I was brought after a Firestone performed close to grand worth of work new EGR valve been installed code is P1404 The code is due to EGR detection at idle. I have checked valve I do not see any carbon on seat but the seat feels very weak maybe aftermarket valv... Trouble codes: 1404 (Egr)
2004 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHK24234
Vehicle came in as a no-start. History: Hit pole with it. Body shop put in used tank and repaired body. Customer drove it home. Would not start in the morning. This is where I got it. Hook up tech 2, has very low pump pressure 700 psi. Hook up tool to check if...
2008 Chevrolet Silverado 2500 HD WT 6.6L Electronic VIN: 1GCHK23678
Hi all, working on this truck, it is a 4 wheel drive with the allision trans. and duramax. I'm trying to locate the output speed sensor but all information I find is on a 2wd truck. Any help appricated.
1998 GMC C1500 Sierra SL 4.3L p0300 VIN: 1GTEC14W2W
Starts running poorly once or twice a month.starts running poorly going to work drives to work shuts off truck. Starts missing most of the time on freeway. Restart runs good. Has code p0300 freeze fram readings. Engine load 24 coolant 189 st trim 1% st trim 12...
1999 GMC Sierra 1500 SL 5.3L Misfire VIN: 2GTEK19T9X
Fuel pressure is 56psi. Misfiring on cylinder 4 most of the time and sometimes on cylinder 6. Replaced coils and injectors. Injectors are noiding. Compression is 150 psi. Need help if anyone has any ideas, it would be greatly appreciated. Trouble codes: P0300, P0157, P0332
2002 GMC Envoy SLE 4.2L Hesitation, Stall, on turning full left VIN: 1GKDT13S32
vehichle stalls sometimes and almost cuts off on full left or right turn. Have cleaned t-body, idle relearn but results are still the same. vehichle belongs to an older couple and they are afraid it is goin to cut off and dont want to drive it.
2003 Pontiac Grand Am GT 3.4L No Start VIN: 1G2NW52EX3
This intermittent no start has me puzzled. It has only happened here at the shop once. When the car fails to start, there is plenty of spark, fuel pressure OK, the security light doesn't flash. While cranking it sounds like it's out of time. If it had a distri...
2007 Saturn Outlook XR 3.6L Steering column VIN: 5GZER23737
This unit[same as a GMC Acdia] will not make a sound cool in the morning. But after driven a while a noise developes in the column, [sounds like rubber to metal[, as you turn.We have lubed all we can see without removing steering from housing. Has any had this...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Chevrolet Impala 3.4L left headlamp VIN: 2G1WF55E41
Thanks guys Found the DK Blue wire from relay box to left head lamp asm.to be corodid and open along battery What ever happened to the good old days when one wire from the dimmer switch did the trick guess Im old school Just wish I had better info on this mode...
2002 Chevrolet Blazer LS 4.3L Hesitation, Poor Fuel Economy, MIL Lamp on, lack of power under VIN: 1GNDT13W52
science always wins. so i thank all of the 14 repliers . YES a clogged CAT was the problem. a back pressure test verified the problem. allan [...] and others gave me a follow up email which helped nail it down. i mentioned the tranny shop and TP sensor only to... Trouble codes: P0101.
2005 Chevrolet Silverado 2500 HD 6.6L drivers front seal VIN: 1GCHK23285
Thanks for all the information. I am going to do like some said and just go with a seal as some have said the bearings dont really go bad in the front end. I am going to ordr the seal installer from my tool man, which I can get fairly quick. Thanks again for t...
2006 Chevrolet Impala LS 3.9L RF turn signal VIN: 2G1WS55196
Well, it's fixed. Michael from Wisconsin was close. Someone clipped the lead for the dome lamp circuit under the dash and taped the harness back up. I wired it back in and removed the bulbs to keep the lights out and away we go. I really hate poorly labele...
2009 Chevrolet Silverado 1500 LT 5.3L can't reset TPMS VIN: 2GCEK290X9
We went through all of the reset proceedures on this unit including - air pressure up and down / key fob / modis - comanding into relearn - will not stay into relearn after first tire is commanded to relearn - we also went as far as to rotate tires to see if t...
2005 GMC Sierra 3500 SLT 6.6L Fuel rail pressure sensor, PCM VIN: 1GTHK33295
Found engine oil pressure sensor 5 volt reference wire pinched on the power steering bracket. Repaired wiring vehicle now starts.
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