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Prev Professional Automotive Repair Technical Discussions for September 17, 2013
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Open Help Requests for GM
Help Request Answers
2000 Buick Regal LS 3.8L No Start
Car was originally towed in for a no start, found that if gas pedal was pressed would start just had to drive two footed or would stall. first thought was iac, tried tapping no difference, i actually have a gm iac so i installed it except it wouldnt even run w... Trouble codes: P0440
1991 Chevrolet Camaro RS 3.1L No Start, Stall VIN: 1G1FP23T6M
This camaro is the 3.1 and it will start up then stall. It has spark. It appeared to be flooding one bank when the plugs were done. The tps, ect scoped out OK. The MAP sensor is reading in spec. Not really sure what else to check.
2007 Chevrolet Avalanche LTZ 5.3L Auto 4wd VIN: 3GNFK12367
costumer complained of a traction control and stabilatrack light coming on while driving. I scanned for codes and did not find any. I drove with the scan tool monitoring transfer case data stream. I noticed that with the switch in AUTO 4WD that it showed it wa...

Fixes & Summaries for GM
Fix/Summary Answers
1991 Cadillac Seville 4.9L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1G6KS53B3M
Thank you to all who responded. As was suggested, injector failure was the issue. we removed fuse for each injector bank & installed a jumper wire into circuit then monitored amperage draw on each bank w/ amp clamp & lab scope. found one injector on each bank ... Trouble codes: 46 (Right to left bank fuel imbalance).
1997 Chevrolet Camaro 3.8L ac air temp. VIN: 2G1FP22K6V
I want to start by thanking everyone who replied to this post. I also wanted to comment on Carters post, I'm fully aware that you're supposed to replace the accumulator when you replace the compressor, however when you constantly get the wrong part and no one ...
2002 Chevrolet Cavalier LS 2.2L Brake line VIN: 1G1JF52412
Tony and Rich gave me the Dorman #. I called the Napa store with the # and they crossed it to their # and 3 hrs later I had the part and it is fixed. I took the old one apart and there are O rings and that is where it leaked. It kind of ooozed out. Craig g...
2008 Chevrolet Silverado 1500 WT 5.3L MIL Lamp on VIN: 2GCEC13068
Thanks to evryone for your replies wich help me to reasure on what needed to b done I was a little confused becaused I had cleaned the throtle body,relearn and app codes would pop up real quick but in fact it was the throtle body doing all this, replaced and i... Trouble codes: P0121, P2138, C0161.
2002 GMC Savana 2500 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GTGG29R62
Found multiple breaks in the IAT harness(4)before i decided to just run an overlay from IAT to PCM. Complete break was over PCM itself before the harness splits off to C1 & C2, one was right at the junction with the main harness off of the maf/iat breakout, an... Trouble codes: P0112 (IAT Ckt low), P0113 (IAT Ckt high), P0300, P0327 (Knock sensor 1 signal short/low), P1111 (IAT Ckt intermittent high), P1112 (IAT low volts intake plenum switch).
2004 GMC Sierra 1500 SLE 5.3L low pedal VIN: 1GTEK19T14
thanks too all .after a better bleeding pedal is great.master is good. plus have purchased mastercool kit .
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