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Prev Professional Automotive Repair Technical Discussions for February 19, 2009
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Open Help Requests for GM
Help Request Answers
1995 Buick Century Special 3.1L No Start, Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 1G4AG55M3S
car will run with help but runs terrible, new tune up parts, almost seems like the car is running out of time but have nver seen this problem on this type of engine before. my o2 reading is near zero and new o2 didn't change anything, car has a hard time idlin...
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1986 Chevrolet Camaro Sport 2.8L Poor Idle Quality, Surge, MIL Lamp on VIN: 1G1FP87SXG
Hello gentlemen, perhaps someone out there can shed some light on this Camaro that is kicking our butts. The issue is, when the car is running, the idle will surge from near stall to over 1000rpm and the check engine light will flash in time to the surging. T...
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2000 Chevrolet C2500 5.7L Ignition VIN: 1GBGC24R1Y
Hi group - This 2000 Chevy ocassionally will not start for operator. Starts fine in shop. Noticed today truck would crank and start until key is released! This occured until I plug in Master Tech scanner, I was looking at key on data while I was cranking and t...
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2001 Chevrolet Astro 4.3L Mechanical VIN: 1GCDM19X92
vehicle came for a water pump. upon further inspection the lower intake was leaking. installed lower intake with no major complications. after installation my attempt to start vehicle was unsuccessful. timing was off so i proceeded to set timing from the begin...
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2002 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHC23192
will intermittently build fuel pressure and start,but after setting for 5 minutes will not start.fuel pressure wont go above 560 lbs.
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2003 Chevrolet Silverado 1500 5.3L Poor Idle Quality VIN: 1GCEK19T63
Vehicle came to us running poorly, low power and check engine lamp flashing. normal diagnosis, found the cats broken up and plugged. replaced all 4 oxygen sensors and cat pipe, cleared codes and drive cycled. ran great until next morning. after a hot soak 2-3 ... Trouble codes: P0300
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2006 Chevrolet HHR LT 2.4L MIL Lamp on VIN: 3GNDA23P46
Good morning all-Have a HHR being very stubborn.Have a code of po222.Wires tested ok-alldata pretty low on information.APP sensor replaced(gas pedal asm).It did take a while for the light and message to come back.I know it sounds strange but it seems to act up... Trouble codes: P0222
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2007 Chevrolet Impala LS 3.9L power steering pump VIN: 2G1WS58R37
Wondering if these cars have any rack problems, this car will get air in the system after sitting over night. We replaced the pump because of this problem, have bled the system two more times using gm's method. The car will be fine for a day or so then the nex...
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1998 GMC K1500 Sierra SL 5.7L Temp Gauge VIN: 2GTEK19R2W
Greetings GM techs. This 98 pickup came to us with the complaint of appearing to overheat on a fairly regular basis. Customer said that the gauge had started running between the 210 to 260 mark and at times the "check gauges" light would even come on as the ga...
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2003 GMC Sierra 1500 SLE 5.3L 1-2 shift VIN: 2GTEK19T63
Noticed a delayed & harsh shift when attempting to engage into second gear, mostly noticed during moderate acceleration up hill. The TSB discussing replacing the pressure control solenoid & reprogramming describes the symptoms reasonably accurately. Shift seco...
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1992 Oldsmobile Cutlass Ciera S 3.3L Excessive Emissions, Poor Idle Quality, Stall, Poor Fuel Economy, MIL Lamp on VIN: 1G3AJ84N6N
car starts good cold, but then shortly starts running poorly sometime puts black smoke out tail pipe, but not always, suges vacume fluctuates as well as fuel pressure. then for no reason will straiten out and run good, then will go back bad, ecm checks ok, cat... Trouble codes: 42 (ESC code)
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1996 Pontiac Grand Prix 3.1L coolant fans
please help i think what else can be done again replace missing relay relace computer replace coolant temp sensor
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Fixes & Summaries for GM
Fix/Summary Answers
2001 Buick Regal GS 3.8L headlamps VIN: 2G4WF55161
WELL THANKS TO ALL WHO REPLIED TO MY HELP REQUEST. IT WAS THE MUTI FUNCTION SWITCH. GROUND WIRE AT SWITCH AND LOW BEAM LIGHTS WORKED. I THOUGHT THAT THE SWITCH WAS PROBLEM BUT DEALER WANTED 300.00 FOR SWITCH. FOUND ONE AT WWW.BROCKSUPPLY.COM FOR 45.00. WHAT A ...
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2004 Buick LeSabre Custom 3.8L Wipers VIN: 1G4HP52K24
Sorry for taking so long to close this post. The customer has not returned with the vehicle but called to say he had to plug the motor in as it was going to rain (we left it unplugged when he picked it up so we would not burn the new motor out) now he says tha...
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1991 Chevrolet C3500 Cheyenne 7.4L Surge VIN: 2GCHC39N9M
Well we all can call this one fixed. I want to thank all of you that chimed in. A lot of very plausible test for us to try. It was Brad from my home state that hit it right on the head. We first checked the basics on the engine and found that the disturber to ...
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1994 Chevrolet Caprice Classic 5.7L downshift VIN: 1G1BL52P55
Well, this one is out the door and customer is happy he didn't need a new transmission.Edwin suggested that the quad drivers in the pcm can cause this problem. I did a little deeper testing with a solenoid near the pcm and found that would fix it.Ordered rebu...
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2003 Chevrolet Suburban 1500 LS 5.3L power seats VIN: 3GNFK16Z63
Thank you to all the shops that responsed to this problem. The customer has not brought the vehicle back, so we are unable to complete the repair. Our next step (if we get the vehicle back) will be to try diagnostic with an upgrade to our Modis. We are gett...
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2003 Chevrolet Trailblazer LTZ 4.2L Surge VIN: 1GNDS13S33
Hey Guys thank you to all who replied. What we did to the truck was wash the throttle body and the truck seems to be fine. The problem was very intermintent but we know the throttle was sticking open. We also told the customer he may need to buy a new throttle... Trouble codes: P0105.
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2004 Chevrolet Silverado 1500 5.3L Surge, Misfire, MIL Lamp on VIN: 1GCEK19T64
After reading all the emails, I checked the Cat Converter and found it was the problem as well as a sensor. Thank you to all who sent emails with great advice. Trouble codes: 300 (random cyl misfire).
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2005 Chevrolet Malibu 2.2L MIL Lamp on VIN: 1G1ZS54F15
sent to dealer for a flash update, thanks guys. sure is helpfull to get ideas. This was about to drive me nuts, but a flash fixed problem. Trouble codes: P0171 (system lean bank 1).
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2006 Chevrolet Uplander 3.5L starting VIN: 1NGBX54KD6
THANKS IN ADVANCE FOR REPAIR INFO,THIS CAR WOULD ONLY ACT UP BELOW 20 DEGREES AND IT WARMED UP BEFORE I COULD TOTALLY TEST,BUT WHAT I DID WAS I REMOVED THE FUSE/RELAY BOX UNDER THE HOOD IT HAS THREE LOCKING CONNECTORS ON THE UNDERSIDE.I PUT DIELECTRIC GREASE O...
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2000 GMC Jimmy SLS 4.3L Left front axle VIN: 1GKCT18W2Y
Thanks for the info. Here's what I found out. The original LF axle I replaced was the original from the factory. The second time it fell out it damaged the front diff., so I replaced it with a used fron diff., @ replaced LF axle with a used one. The axle came ...
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2000 Pontiac Montana 3.4L starting curcuit inop VIN: 1GMDX03E04
thanks for all the help . we replaced the + end & the battery all seems to be ok .
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2006 Pontiac G6 2.4L Misfire, Loss of power VIN: 1G2ZF55B46
Thanks to the people that replied. When i had taken out the O2 sensor it was not enough to release the back pressure. We replaced the cat and it took care of the problem.
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2001 Saturn L300 3.0L bcm VIN: 1G8JW52R11
I apreaciate the replies. Unfortunatly the anser to the error message is not available to any of us.GM in it`s infinate wisdome thinks we cannot handle such deep thoughts.I will solve this problem. Then the answer will be posted. Thank you.
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