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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 15, 2011
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Open Help Requests for GM
Help Request Answers
1999 Buick LeSabre Custom 3.8L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1G4HP52K9X
Any ideas or help would be great on this one. Vehicle has a poor idle and misfire. No codes and seems to be cyl's 2 and 4. It does have a new lower intake gasket and upper intake but does not seem to change a thing. Plenty of spark, fuel pressure is good, good...
1991 Chevrolet Camaro Z28 5.0L Hesitation, MIL Lamp on VIN: 1G1FP33F4M
Alright i guess i'll start with a quick explanation of the car and its history. This is a mint condition 1991 camaro z28 convertible that really does have 3,057 original miles. It sat in a climate controlled garage for 18 years until the owner quit paying the ... Trouble codes: 43 (Esc circuit)
2000 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GKDM19WXY
This is a good customer of mine and a vietnam vet, dont want to let him down. He has spent a ton of money on this thing and I have donated way too much time. Any help with this vehicle will be greatly appreciated. I am a lone mechanic starting my own shop, nee... Trouble codes: P0300 (Random misfire although only 5 is missing.), P0325 (Knock sensor)
2005 Chevrolet Avalanche 1500 LT 5.3L Blower Motor VIN: 3GNEK12TX5
truck came in with no high speed on blower. first tried blower resistor , no change. second, tried blower motor , no change. replaced controler/head unit , worked for a day. this truck has automatic climate control, so i printed up a wiring diagram. there is n...
2006 Chevrolet Trailblazer EXT LS 4.2L Idle VIN: 1GNET16S66
This trailblazer came in with a po502.Idle speed incorrect.The truck idles at 700. when it should idle at 1000 rpm.I took the serp belt off and it idles correctly.But heres the kicker,everything feels free,on all the pulleys,so what would you do?
2007 Chevrolet Silverado 1500 LS 4.8L Poor Idle Quality VIN: 1GCEC14C27
Hey all, have one here that is driving us nuts! This truck came in with a P0121 code about a month ago, brought it back today, said ce light would come and go, code was in history only. One of the techs checked the tac for carbon and carefully cleaned it. Rein...
2001 GMC Sierra 2500 HD SLE 6.0L TCC apply VIN: 1GTHK29U91
Hi Everyone, This vehicle has the 4L80E and came in with code 1870: Trans component slippage. I test drove the vehicle and the trans shifts properly with no slippage but the TCC doesn't apply. My scanner indicates the TCC PWM duty cycle climbs when TCC should...
2002 GMC Safari SL 4.3L vibration VIN: 1GKDM19X82
car has a vibration when turning wheel all the way car is not moving in park.i flush power steering, cleanned fuel injection,carbon threatment if idle is higher than a 1000.rpm vibration goes away motor mounts are new also. thanks to all.
2006 GMC Envoy SLE 4.2L windows VIN: 1GKG54L8WB
now none of the windows work the window lock wont work. Or dooor locks wont work.Im hoping [...] seen this problem.Any help woulg be appreciated.
2000 Oldsmobile Intrigue GL 3.5L Misfire, MIL Lamp on VIN: 1G3WS52H6Y
This Car will intermitantly start to missfire it doesn't happen very often if you just start it up and let it idle but if you take it for a drive around the block it will start to miss heavily but only when you come to a stop and let it idle. It will continue ... Trouble codes: P0300
1997 Pontiac Grand Prix GT 3.8L High idle VIN: 1G2WP12K9V
Hi i have a 97 grand prix 3.8k idles high in morning and if you shut car off and restart it it idles high had codes for tps but was reading ok on scanner im thinking computer
2006 Pontiac Grand Prix 3.8L pump? VIN: 2G2WP552X6
Afternoon members. Thanks in advance for some direction on this vehicle. Customer brought the car in with the complaint that there is a whinig noise when in park and in neutral. Also stated that it can also be heard when driving but not when at a stop in drive...
2007 Pontiac G6 GT 3.5L no crank VIN: 1G2ZH57N77
Hello fellow techs ! this is a strange one, from out of the blue the car would not start,the ignition key turns, all lights on the dash come on, but no crank. The owner had another ignition key brought from home - no difference. We changed the battery in the ...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Chevrolet Corvette 5.7L Booster VIN: 1G1YY23P2N
thanks to everyone we put another booster on it and a longer hose and no problen ms so far
1998 Chevrolet Astro 4.3L Injectors VIN: 1GNDM19W4W
Aloha everyone, It was the distributor, Oil soaked slotted wheel and optical sensor. The reason I didn't search was because the shaft drive water pump has to come off to even see the distributor. I replaced the ignition module and coil, fuel pump first, Oh, ...
2002 Chevrolet Impala 3.4L Starting, lighting, instrument panel VIN: 261WF52E32
First of all, I want to thank all of you who replied. You guys are the greatest. Okay, here's the story. The BCM that we replaced the bad one with was a used one. This one turned out to be older than the "original" one. By the looks of the one that was in...
2004 Chevrolet Trailblazer EXT LS 4.2L Poor Fuel Economy VIN: 1GNDT13S34
i would like to thank all the tecs. who replied with help for my problem as it turns out the fuel tank modular was rusted out on the top, a special thank you to david [...] telling me that there was a special coverage on the tank modular the local chev store f...
2005 GMC Envoy SLT 4.2L Misfire VIN: 1GKDT13S05
Thanks everyone for all of the replies. I did not get a chance to check the vehicle again because the customer needed it. Have not yet received a call on it again. Hoping it was [...] yet. If the vehicle comes bac... Trouble codes: P0302.
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