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Prev Professional Automotive Repair Technical Discussions for June 30, 2010
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1997 Buick Century Limited 3.1L Hesitation, Surge, Cuts out, Stall, Misfire VIN: 2G4WY52M7V
Good afternoon all. I've got me a little gem that has reduced me to throwing parts at it. What it's doing is it bucks and backfires when moderate throttle is applied and then it'll do it at very little throttle and somtimes at idle. Then it becomes grey diffic... Trouble codes: P0420
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1999 Buick LeSabre Custom 3.8L Excessive Emissions, No Start, Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 1G4HP52K4X
Car was towed in with the complaint of customer was driving and went to make a turn and the car shut off on her. Customer also stated that the oil light and check engine light came on at that time. I went out to start it had to hold the gas pedal at about half... Trouble codes: P0172 (Fuel System too Rich Bank 1), P0101 (MAF Performance/Range)
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1993 Chevrolet S10 EL 2.8L turnsignal VIN: 1GCCS19R8P
Need alittle help. All data does not give clear instuctions on removal of turnsignal stock and switch . This being my first on this older style column I am having trouble getting this apart . I have removed the wheel,turnsignal switch but need help with the st...
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1994 Chevrolet G30 Chevy Van 5.7L Mechanical VIN: IGBJGB1K7R
Hello chevy guys,we normally work on imports so i need help with this chevy van. After cold start up engine starts without any noise. When the engine is started warm after being shut off for about 10 minutes the engine makes a knocking noise for about 3-4 seco...
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2001 Chevrolet Silverado 1500 LT 5.3L dash battery Light VIN: 2GCEK19T21
Help!! Good long time customer, came with intermittent battery light displayed on dash (volt meter shows 13V) when this happens. Had failure while in shop,with light on, per history responses in iatn disconnected conector from alternator dash light should go o...
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2004 Chevrolet Avalanche 2500 8.1L noise VIN: 3GNGK22G94
hello, This truck when it gets hot sounds like a bird is in it. it makes a constant low rpm squeak. if u raise the rpm it will go away. it does follow rpm speed.Higher rpm= Faster squeak.@ about 2500-3000 rpm it goes away completely. if u let the truck cool do...
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1994 GMC G2500 Vandura 5.7L Hesitation, Cuts out, Stall, Poor Fuel Economy VIN: IGDEG25KRF
Need help on this van.It will fire up and idle good if you try to drive it very easy it seems to do fine.Under normal or hard driving conditions it will fall flat on its face and stumble badly sometimes stall it acts like its getting to much fuel.If you unplug...
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1995 GMC C3500 Sierra SL 6.5L Surge, Cuts out, Stall VIN: 1GDKC34F3S
Customer stated that on several occasions while climbing or just driving on the flat the vehicle rpm would drop to idle and remain there. No pedal response at all. If you shut the vehicle off and restart you could continue on normally. I scanned the computer a... Trouble codes: 31 (Map input low), 27 (APP 2 cicuit fault), 23 (APP 1 circuit fault), 22 (APP 1 circuit low), 65 (APP 3 circuit range), 99 (APP 2 5 volt ref fault)
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2001 GMC Savana 1500 4.3L Misfire, MIL Lamp on VIN: 1GTFG15WO1
Thanks in advance.I have this savana 1500 van with 4.3 that is missing under a load between 3500 4000 rpms runs fine under light load and at idle.1 have replaced crank sensor twice,full tune up,fuel pump,distributer,coil and ignitin module.i have checked all c... Trouble codes: P0335, P1381
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2004 GMC Sierra 3500 6.0L No Start VIN: 1GDJC39U54
We have a strange on here. Customer claimed truck strated for a few seconds then died and has not started since. We have fuel pressure,inj. pulse but no spark. Coils have 12V. and ground and ohmed out the control and ref. wires from PCM and coil harness. All f...
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2004 GMC Envoy SLE 4.2L Poor Idle Quality, Reprogramming VIN: 1GKDS13S34
Reprogramming error? where can you get the codes (e000) codes e4491 reprogramming error and e4423 unknown reprogramming error. Line 9, operation b4,error code fd. Line 9, operation b4, error code 77. Line 14, operation ee, error code 0. The ecm took the recali... Trouble codes: E4491 (Reprogramming error), E4423 (Unknown reprogramming error)
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1994 Other GM Commodore VR 3.8L Poor Idle Quality, Hesitation, Flat spot off idle VIN: 6HVRK19HRL
This Australian produced vehicle is fitted with a MAP sensed L27 Buick V6 engine in a rear wheel drive layout. Similar US Buick/Pontiac/Oldsmobile vehicles were fitted with the same engine; however I am unsure which ones are MAP sensed. This vehicle has a hesi...
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2003 Pontiac Montana 3.4L transmission VIN: 1GMDX03E13
customer complaint trans wont shift out of first gear road tested trans stays in first gear wont shift out of fist gear checked for faults code p0730 earased fault trans did not change dropped pan no metal but trans fluid is real varnished
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Fixes & Summaries for GM
Fix/Summary Answers
1991 Chevrolet C3500 Silverado 7.4L No Start VIN: 2GCGC29N2M
Thanks everyone for your help. After some helpful info, i found the coil to be bad. I put a test light on the neg side of the coil and compared it to another truck that just came into the shop. Both had the same inputs to the coil, so i swapped the coil and ...
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2003 Chevrolet Venture LS 3.4L Cuts out, Stall VIN: 1GNDX03E53
Well just like it was posted i found the plug under the van and was horribly corroded took it apart and cleaned all the connections and sealed it. Here it is almost a week later and so far the van has NOT returned for this problem and have not heard from the c... Trouble codes: C1276 (Delivered torque signal circuit), U1000 (Class 2 data link malfuntion), U1016 (Lost communication with ecm/pcn/vcm).
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2004 Chevrolet Silverado 2500 HD 6.0L oil prssor VIN: 1GCGC23U84
THANKS FOR ALL THE GUYS WHO REPLIES TO THE REQUEST. AFTER MEIKE MOUSE THE OIL LINES WITH THE OIL PAN & FILTER FOUND A BROKEN CAM BUSHING WHICH PUSHING OIL BACK TO THE OIL PAN & LEVING UPER HEADS WITH NO OIL CUSTOMER REQUEST ENGIN THANKS AGINE
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2005 Chevrolet Malibu LT 3.5L Poor Idle Quality, MIL Lamp on VIN: 1G12T52875
THANKS TO EVERYONE , INJECTOR WAS MY PROBLEM , SWAPPED IT TO #4 AND MISFIRE FOLLOWED INJECTOR , EVEN THOUGH IT WAS CONTRIBUTING FINE DURING MY INJECTOR BALANCE TEST , ONCE AGAIN THANKS TO ALL FOR YOUR TIME Trouble codes: P0300 (Misfire).
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2008 Chevrolet HHR LT 2.4L Mechanical
Thanks everyone one for the help, sorry i dont have an answer or fix to the problem. The customer declined any further repairs and has traded the vehicle off for a new one. Thanks again for the responses.
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2009 Chevrolet Impala LS 3.9L shift indicator off VIN: 2G1WS57M39
Reflashed the BCM,turned off electronic units(Radios,radar)alls well,thanks Techs!
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2002 GMC Envoy XL SLE 4.2L rear suspension VIN: 1GKBS13SX2
thanks for all of you responses!! i did find the kit at strutmaster , but they had it noted at the bottom that there was no way to turn off air suspension warning light. anyways after all of the research i did customer decided to go with new airbags anywa...
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2001 Oldsmobile Aurora 3.5L No Start VIN: 1G3GR62H81
thanks guys for all the input it was the THEFT DETERENT MODULE
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2002 Pontiac Grand Am SE 2.2L No Start VIN: 1G2NF12F72
Well as I was looking for people having the actual same issue it finally came giving me the ammunition to get customer to agree to it, I was leaning towards an ignition switch/area as the car would start if you open it up for few minutes and let interior cool ...
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