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Prev Professional Automotive Repair Technical Discussions for May 20, 2010
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Open Help Requests for GM
Help Request Answers
2007 Buick Rendezvous CX 3.5L No Start VIN: 3G5DA03L77
Greetings,car was towed in after loosing power while crossing rr tracks.it started then died once inside shop,i checked and had no spark and a p0335 crk sensor code.i replaced crk sensor,but it still would not start.i have 12v and ground at the crk sensor and ... Trouble codes: P0335 (Crk sensor)
1996 Chevrolet S10 4.3L Compressor VIN: 1GCS19X0T8
Hoping this is one of those easy fixes-ha. I have been out of the A/C business for a while, so forgive my ignorance with this one. The vehicle has been sitting for a little more than a year-had a leaking water pump-finally came in to replace that and customer ...
1997 Chevrolet Express 1500 4.3L Misfire VIN: 1GCEG15W9V
He has been fighting this intermittent miss for almost a year. First time in my shop. Others have repeatedly replaced plugs, wires, cap, rotor, fuel filter, cam sensor in distributor, ign. module. etc. It will intermittently miss, but almost guaranteed to miss... Trouble codes: P0300, P0305
1998 Chevrolet Lumina 3.1L Mechanical VIN: 2G1WL52M7W
1998 Chevy Lumina. I changed the oil pump and primed. Engine starts, oil lamp on. Loud knocking and banging noise from engine and then car dies. Car came in with dead battery. Got battery up and running then the loud banging noise, changed oil pump. I am lost ...
2004 Chevrolet Avalanche 1500 Z71 5.3L No Start VIN: T34G133578
Hi guys have a problem with this avalanche. No warning at all it stalled while driving. Has 60 psi fuel pressure, has injection pulse but has no spark at any of the coils. No codes, all sensor values are good i get an rpm reading when it cranks, cheched all fu...
2005 Chevrolet W3500 Tiltmaster W3S042 5.2L Surge, Cuts out, Stall, Poor Fuel Economy, MIL Lamp on VIN: Y8BE5B1656
This has a Isuzu 5.2 Diesel customer was on freeway diving for about 10 min. when the check eng. light came on and truck went into limp mode, he shut it down and restarted and was able too drive back to his work. Looking for some advice on where to go with t... Trouble codes: P0087, P0091, P0093
2005 Chevrolet Impala 3.8L pops back VIN: 2G1WF52K35
This is my second post. I didn't know how to add updated info after 1 time. This car will start cold and idle normally. If you accelerate (doesn't matter if light or heavy) the engine will start bucking and popping after about 2200 rpm's. It is not the rev lim... Trouble codes: P0350 (Ignition Coil Control Circuit), P1350 (Ignition ByPass Circuit)
2007 Chevrolet Suburban 1500 LT 5.3L Accessories VIN: 1GNFK16347
This came from a body shop that removed the passenger front door for repaint. After installing door the window and door locks are inoperative on that door. Power at red wires and ground is good. No communication with passenger door module. Have tried reprogram...
2008 Chevrolet Silverado 1500 WT 4.3L MIL Lamp on, Temp gage drops out VIN: 1GCEC14X28
This truck came in with check engine light on. Had code po128 cooling temp below thermostatic operation. Customer said the temp gauge will also drop to cold and messege center says engine hot a/c is off in dash. Checked temp sender, gauge and wiring all check ... Trouble codes: P0128
1986 GMC C3500 Sierra Classic 7.4L Droning Noise VIN: 1GTHC33W7G
Running out of ideas.Please help. Has TH400 trans.
1997 Pontiac Firebird Trans Am 5.7L Headlight Doors VIN: 2G2FV22P2V
Hello fellow firebird techs, this one is driving me crazy, the car came in for the front headlights making a clicking noise when trying to close, if you manually close the doors by hand they will raise with no problem. Checked the module with headlight bulb, h...
2003 Saturn Vue 2.2L Instrument Cluster VIN: 5GZCZ53B83
First of all i would like to thank any and all help for this request and past requests that i have posted. That being said the vehicle that i am having a problem with is a used vehicle that the general manager is trying to sell on the lot. The reason i mention...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Skylark Limited 3.1L No Start, Stall, MIL Lamp on VIN: 1G4NJ52M6T
hello every one thanks for all the help the people that sad it was the cluster that was it and thanks to Curtis at oktire he took the time to talk to me on the phone and guided me threw the security system reset thanks for taking your time to help me to res...
2004 Buick Century Limited 3.1L No Start VIN: 2G4WS55J74
Thanks to the 26 people who replied- the Century is repaired with your help. I'm afraid I was my own worst enemy on this one- I confused myself with a somewhat sloppy diagnostic approach overthinking the issue. Many replies pointed to a security issue. I had e... Trouble codes: P0336 (CKP circuit fault history code), P0650 (MIL Control Circuit history code), B2957 (Security sensor data circuit low).
2003 Cadillac CTS 3.2L MIL Lamp on, limp mode VIN: 1G6DM57N83
Well it has been 3 weeks and no problems yet. I see this customer several times a week and he said it is running good.I replaced the pig tail at the throttle body and ran new wires to the ecm and also replaced the 4 ecm terminals.Thanks for all those that help... Trouble codes: P0221 (Tp s 12 mismatch), P2176 (Min tp not detected), P2135 (Tps 1 2 voltaged more than predicted).
1999 Chevrolet Silverado 1500 5.3L Warning chime VIN: 2GCEC19T2X
Good morning I want to thank everybody for taking the time to try and help me solve this problem, the final solution was a brain fart on my part, somehow the parking brake pedal was depressed 2 clicks and of course that makes the chime work when u start to ...
2004 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNDT13X74
Thanks so much for all of the quick replies.As earlier stated I went ahead and removed the O2 sensors this morning.With no sensors in it...it ran great.I went ahead and replaced the cat.After removing the old cat ...we cut it open for inspection.It was almost ... Trouble codes: P0101 (Mass or Volume Circuit Range Performance Problem).
2003 GMC Envoy XL SLT 4.2L Electronic VIN: 1GKET165SX
I have not been able to locate the source of this noise. I am thankfull to all that replied. The truck is not equipped with air suspension so the compressor is not the noise. I have sent the customer to a GM dealer for further diagnosis. Thanks again to all th...
2005 GMC Yukon XL 1500 SLT 5.3L ride control VIN: 1GKFK16Z35
Sorry for the long delay and thank you for all replies they were a big help vent solenoid was open no resistance this locks out system that explains why bi-directional testing could not be done!! replaced pump cleaned all connectors all is good!!!
2003 Other GM H2 6.0L No Start VIN: 5GRGN23U73
i removed the fuel pump relay and installed a 10 amp fused circuit between the battery pos and the fuel pump prime connection located next to the pump relay the pump is only supposed to pull roughly 8 amps and it would blow a 10 and 15 amp fuse we installed... Trouble codes: 1518 (Tac communication/memory).
2000 Pontiac Grand Prix GTP 3.8L Poor Fuel Economy VIN: 1G2WR5218Y
thank you all for the input and your help. replace oem plastic pulley with new steel pulley. also found out that the last time belt was replace, it was replaced with to small of a belt. how they got it on beats me. replace with correct size belt and all is goo...
2003 Pontiac Montana 3.4L No Start VIN: 1GMDX13EX3
Found water and corrosion build up in the plug off the main harness under the driver seat. No pig was available through dealer or aftermarket. Bypassed the plug and hard wired. Van runs fine. Thank you for the direction.
2002 Saturn SL2 1.9L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1G8ZK54722
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