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Prev Professional Automotive Repair Technical Discussions for June 21, 2013
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Open Help Requests for GM
Help Request Answers
2003 Buick Regal LS 3.8L MIL Lamp on VIN: 2G4WB52K33
This car came in for a state inspection and the check engine light was on with a code P0442. I smoke tested it and the vent valve had a leak. I installed a new vent valve and had the customer drive the car. The light came back on with the same P0442. I read th... Trouble codes: P0742 (EVAP system small leak detected)
2002 Cadillac DeVille DTS 4.6L ride control VIN: 1G6KF57902
Hello fellow warriors.We are working on the above vehicle and are replacing the front electronic struts and the rear electronic air shocks with a monroe kit.New front struts and new coil over rear shocks.My question is this,it says to remove the sensors from t...
1996 Chevrolet Monte Carlo LS 3.1L NO 2-3 Shift VIN: 2G1WW12M2T
Attn Members, Could anyone point me in the right direction on this, this is my personal car. I have a transmission problem, thatís got me a bit confuse Symptoms: I place the Scanner on the car, drove car with scanner on it. It shows the Trans is shift into 3 ...
2000 Chevrolet Cavalier 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G1JC1248Y
I have a 2000 Cav here which seems to have some multiple issues, some that are Intermittently and others all the time. Before we really start digging I was hoping someone has tackled a few of these. We have the lean code (171), we have black plugs, It runs awf... Trouble codes: P0171 (System lean)
2003 Chevrolet Silverado 2500 HD 6.6L Mechanical VIN: 1GCHK23133
What I have is a 6.6 duramax crankcase leaking, its overfilling with fuel and coming from the rear main seal. I am thinking its coming from injectors 3,5,7 I was hoping somebody can confirm it or point me otherwise. Injector balancing rate inj1 0.1mm3, inj2 -0...
2007 Chevrolet Monte Carlo LS 3.5L Misfire VIN: 2G1WJ15K37
Dead misfire on 1 and 4...Everyones going to immediately think coil as I did...swapped with no change. Checked Ign module for power/ground at the coil terminals - good noid. Scoped main power to IGN module to see current ramp of all coils - good and identical....
2007 Chevrolet Aveo LS 1.6L no communication VIN: KL1TD56697
We just sold this Aveo, and the AirBag light came on. I can not communicate with our Autel. Any common problems on these things. This is our first Aveo, no clue where to take this one.
2007 Chevrolet Equinox LT 3.4L . VIN: 2CNDL63F47
this one is wipping my but. this car came in with a code c0161 abs/tcs brake switch circuit fault,and a code 131 abs/tcs brak switch circuit fault.the custermer said that the car didnt have power and the traction control light would flash on and tech di...
2009 Chevrolet HHR SS 2.0L No Start, MIL Lamp on, Hard start VIN: 3GNCA73X49
The car will not start unless the maf sensor is unplugged and it still take a while for it to start. the maf sensor has been replaced and the car ran good but for only a couple of days. When the maf is left unplugged the car will run. The front o2 sensor will ... Trouble codes: P0100, P2187
2007 GMC Sierra 2500 HD SLT 6.6L MIL Lamp on, black smoke VIN: 1GTHK29677
My understanding is that the DPF filter is no good and must be replaced since the regen wont complete and the soot mass readings are so high. Looking for a second opinion. I dont believe the truck was smoking like this until I replaced the EGR cooler but i can... Trouble codes: P0101, P0401, P0299
2002 Oldsmobile Bravada 4.2L MIL Lamp on VIN: 1GHDT13S72
4.2 p1345 please help!!! been on this one for a couple weeks now any help would be greatly appreciated. To start from the beginning the vehicle was running very poorly with trouble code p1345. Customer replaced vct solenoid with no change in engine performance... Trouble codes: P1345 (Camshaft correlation)

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Regal Custom 3.8L No Start VIN: 2G4WB52L3S
The car runs perfectly now.Every one that said the upper intake manifold was leaking antifreeze into the cylinders were correct. Kenneth from Cal was dead on. He said look into the TB and see if theres a puddle of antifreeze there. All I saw was a couple of dr...
1994 Chevrolet Corvette 5.7L Ccm VIN: 1G1YY22P1R
Customer request no further action on the battery drain. According to GM Bulletin No.: 02-06-03-010A "The recommendation for maximum parasitic drain is around 30 mA (0.030 amp). A typical drain today actually falls into the 7-12 mA range, even though some ve...
1998 Chevrolet Malibu 3.1L Misfire VIN: 1G1ND52M1W
Customer never returned for me to do further testing. The most logical replies are an injector problem. I'm a little skeptical, as past experience with injectors also caused misfire at idle as well. Others made mention of possible weak or broken valve spring.... Trouble codes: P0300.
2006 Chevrolet Cobalt LT 2.2L starter VIN: 1G1AL55F56
thanks for all the help i recieved.customer took car to the local chevy dealer for diagonistic.i cheched wiring to starter and all fuses found broken wire they say. customer pickup car and next day it did the same thing no start won't turn over.back ...
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