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Prev Professional Automotive Repair Technical Discussions for June 18, 2012
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Open Help Requests for GM
Help Request Answers
1995 Cadillac DeVille 4.9L Electronic VIN: 1G6KD52B8S
I had 1995 cad deville customer had diagnostic done at other shop they told her it need new ac compresor she bring it to me to do the work after i install new comp and flush out the ac system ac compresor comes on and off frequently then it wouldnt come on. af...
2004 Chevrolet Trailblazer LS 4.2L cruise VIN: 1GNDT13S34
cruise holds and works good under 70 mph but over seventy the cruise holds until nees to accelerate then cruise will shut off, cant find any info on this has anyone seen this has me puzzeled any help would be helpful
2005 Chevrolet C4500 Kodiak C4C042 6.6L No Start, Poor Idle Quality, Cuts out, Stall, Poor Fuel Economy
hey DURAMAX specialists and whoever got involved with this before!!!i am helping a friend from another garage with this truck that won't stay running!about a month ago he had some issues with the charging system and after changing the alternator 3 times i gues... Trouble codes: P0621, P0622, P0670
2006 Chevrolet Silverado 2500 HD LT 6.6L Unknown VIN: 1GCHK23D66
this customer just bought this truck and is concerned of a noise when warm. sounds almost like a lifter tick but sounds like is comming from the bellhousing area and only does it in park or nuetral. Im going to try to tighten up the converter bolts and see if ...
2007 Chevrolet Uplander 3.9L No Start, Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GBDV13127
Vehicle had no power what so ever and was barely drivable. Long cranks and eventually would start. Put it in drive and slam on accelerator and it wouldn't move any faster than the idle speed could move the car. SLOWLY accelerating would eventually get you some... Trouble codes: P0336 (Crankshaft Position CKP Sensor Performance), P0335 (Crankshaft Position CKP Sensor Circuit), P0326 (Knock Sensor KS Performance Bank 1), P0315 (Crankshaft Position CKP System Variation Not Learned)
2007 Chevrolet Cobalt SS 2.4L MIL Lamp on
Just had a quick question, the pinpoint test for this code on alldata only has one option for repair, the canister purge solenoid. my problem is, is that it states that the vehicle uses the canister purge solenoid and the vent control solenoid to seal off evap... Trouble codes: P0496
2007 Chevrolet Avalanche LTZ 5.3L No Start, Cuts out, Stall, MIL Lamp on VIN: 3GNFK12387
Hello This truck has been a nightmare.This problem has been ongoing for two months.I have replaced the throttle body twice with new O.E. one's from the dealer.I have replaced the PCM with a brand new one and it has the latest and greatest programing in it.I h... Trouble codes: P1516, P2119, P2135
2003 GMC Safari 4.3L Misfire VIN: 1GTDM19X73
This van will misfire & the check engine light will flash when going up a hill, but it has to be a long hill. Going up the hill by my shop (the one I always use to road test), or on a level it runs fine. It sets a P0300 code and if you look at the misfire moni... Trouble codes: P0300 (Multiple random missfire)
2004 GMC Yukon Denali XL 6.0L Pressures VIN: 1GKFK66U14
Hey guys, Denali came in with complaint of no cold air in front vents but cold air in ceiling vents in back seat.Found low charged, found that evap was leaking - replaced. put new accumulator in with required oil, checked orifice tube - white (what was called...
1979 Oldsmobile Cutlass Supreme Brougham 5.7L rod side clearance VIN: 3M47H9M506
Hi Guys, The machine shop sold me some used piston rods that were supposed to be "good condition". Alldata says max rod side clearance should be 0.014in. In one section between 2 rods I get 0.029in. The machine shop guy says this is OK. I am concerned that t...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Chevrolet K1500 Cheyenne 5.7L tramsmission VIN: 1GCEK14K4N
thanks for all the replys, i already figured the tranny was toast. i was looking for the cause of the problem. the customer does not want to spend the money to fix the vehicule so it will be driven with lucas oil treatment untill it completly dies. it looks li...
1994 Chevrolet Blazer 5.7L Electronic VIN: 1GNEK18K2R
well this one is out the door with a "patch"... the replies guiding me towards the pcm thinking the vehicle was in 4-lo helped imensly. scanner shows 4-lo switch on when in 2-hi but off in 4-hi. i unplugged the connector directly under the t-case shift lever a...
1996 Chevrolet Cavalier 2.2L cam and crank sensor VIN: 1G1JC5245T
I am working on this vehicle with someone else and have not been able to get him to put back together a bunch of stuff that was taken apart I do believe I have a ground issue thanks for the help
1998 Chevrolet K3500 Cheyenne 5.7L hydrolics VIN: 1GCHK34R5W
thank you everyone for helping me out. I just did not want to pull this out for a third time. But isnt that what we love about this proffession. I admitt i was in a hurry and did not notice part of the old throwout bearing caught up inside the fingers of the p...
1999 Chevrolet Express 3500 LS 5.7L Excessive Emissions, Hesitation, Surge, Cuts out, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GAHG39R8X
thank you guys for all your help put a used ecm in it took it to dealer to be flashed runs great should of figured when it acts that spazztit did dump brake fluid out of ecm thanks Trouble codes: P0132, P0172.
2000 Chevrolet Venture 3.4L Evap VIN: 1GNDU03E4Y
Hello everyone, I did perform a smoke test on the vehicle and found two leaks one in the underhood of vehicle (a small hose) and second it was the canister itself leaking (the assembly); thus, recommending to replace one hose and the canister. I have been swa...
2002 Chevrolet Avalanche 1500 5.3L unknown VIN: 3GNEK13T72
After talking to customer for a while, we believe its possible he accidently hit the 4wd button on the console. Could not get vehicle to act up again and customer says it hasn't acted up since that day. Still a mystery though, we were just speculating on the...
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