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Prev Professional Automotive Repair Technical Discussions for September 6, 2012
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Open Help Requests for GM
Help Request Answers
1994 Chevrolet Camaro Z28 5.7L engine VIN: 2G1FP22P2R
Hello: Am installing a rebuilt engine. Engine fired up yesterday and ran @ idle to about 2000 rpm until we noticed (has open exhaust) starter still engaged so shut off. Replacement starter installed today and no start, no spark, no injector pulse, and no comm...
2001 Chevrolet Impala LS 3.8L no start/no crank VIN: 2G1WH55K51
We have an 01 impala in here that has an intermitent no start/no crank problem after replacing BCM for a battery drain issue. The new BCM fixed the problem but now has the intermitent no start/no crank. Security light does not flash when problem occurs. starts...
2005 Chevrolet Aveo LS 1.6L engine VIN: KL1TD52635
Over heated coolant loss replace t-stat housing ( plastic cracked ), came back 2 weeks over heating refilled found radiator not getting warm ( the upper hose and radiator and the radiator inlet gets hot not the radiator nor the lower hose at radiator but at th...
2006 Chevrolet HHR LT 2.4L 1-2 shift
Vehicle has intermittent "T/C off" warning light (indicating Traction control problem/system disabled) During this time harsh 1-2 shift and harsh engagement shifting into drive from neutral. Other upshifts are OK. Next drive cycle will normally have no light a...
1974 Pontiac Firebird Trans Am 6.6L tach VIN: 2V87Y4N116
This is the boss's car. Just restored our other body shop. They replaced the harnes do not have old one. I removed the IC check for signal for tach did not see any. The mitchell does not have the wireing harness for Trans Am(with tach). How does the tach get i...
2001 Pontiac Firebird 3.8L vtd VIN: 2G2FS22KX1
morning all.vehicle came in with security light on soild.i can not comunicate with bcm using the tech2.all powers,grounds are good.i can get into all other modules.the car does start and run fine.i replaced the bcm w/gm unit,now the security light flashes,trie...

Fixes & Summaries for GM
Fix/Summary Answers
1987 Chevrolet R10 Custom Deluxe 5.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCER14H6H
I want to thank everybody for all your advice and efforts,we get very few of these t-body injection systems with problems and the time between each one seems to cause us to forget everything we learned about them. Fuel pressure is critical on these and we did ...
1998 Chevrolet S10 LS 2.2L pump VIN: 1GCCS1947W
the truck is gone and hasent come back so far i installed a new complete pump and a new converter transtar has just come out with a new converter to corect hub install hight seems to work. thanks to all that replied.everyone had great sug. but the install high...
2002 Chevrolet S10 4.3L Misfire VIN: 1GCDT19W62
Well this is kind of an embarassing fix, but one that will hopefully help someone in the future. I didn't know these had a CKP relearn to them! I did the AC cap and rotor which did nothing, then performed a heavy duty upper intake clean before I read the rep... Trouble codes: P0301 (p0304-), P0304 (p0300-), P0300.
2002 Chevrolet Impala LS 3.8L Suspension VIN: 2G1WH55K62
Well, I thought we nailed it when one of my techs found the driver's front bushing between the cradle and body MISSING. Replaced with OE...still has the noise. Now the real unfortunate part, one I feel terrible about because of the outpouring of help you all...
2003 Chevrolet Silverado 3500 6.6L neutral light VIN: 1GCJK39183
Hey is fixed. I put a used encoder motor on it per the owner's request...he had one at his shop off of another truck...all lights work. Thanks for the help.
2003 Chevrolet Silverado 3500 LS 6.6L Transmission No Shift VIN: 1GBJK39123
Well, here's how it turned out. Mike and John from BC suggested to definitely verify the circuit/wiring and pin fit at TCM were good. This I had done, going so far as to piggyback redundant wires between the TCM and Solenoid A. Avinash recommended replacing So...
2003 Chevrolet Silverado 3500 8.1L Fuel Gauge VIN: 1GBJK34G33
Sorry about the delay on closing this help request. i wanted to make sure it is fixed. It was the fuel pump assembly that I got from CQ. They always treat me good there. The sending unit float was inverted I ended up digging the old unit out of the trash to ch...
2005 GMC Envoy XUV SLT 5.3L Misfire VIN: 1GKES12M75
Well this one is fixed. We put everything back together(Cam bearings,Cam,New lifters,). Still had a cylinder misfire on 4. Noticed a ground signal drop on #4 DOD solenoid at times. Repaired short and its fixed. This was a very expensive learning lesson on my p... Trouble codes: P0304 (Misfire 4).
2007 GMC Yukon XL 1500 Denali 6.2L Liftgate Module VIN: 1GKFK66807
thank yuo all for your support finally called us back several hours later.i feel stupid but learned a lot on the lift gate system.we got frustrated waiting and felt the latch didnt feel just right.put a new latch in it,bingo! fixed.this was the first...
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