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Prev Professional Automotive Repair Technical Discussions for April 6, 2011
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Open Help Requests for GM
Help Request Answers
2004 Cadillac SRX 4.6L Timing Chain VIN: 1GYDE63A24
On start up hot or cold after sitting for about 30 min. I get a loud noise from front of engine I think on drivers side. Sounds like loose timing chain or engine knock. Only last about .5 sec.Runs great after that. Want to take apart but not sure what to look ...
2007 Chevrolet Colorado LS 2.9L MIL Lamp on VIN: 1GCCS14907
Parts Delivery Truck Came in with 4 codes ( going from memory )...P0131,P0171,P0455 & P1133. Upstream O2 seems a little slow but is switching even during the Top Engine Cleaning process it was switching. I should have written down the freeze frame info before ... Trouble codes: P0171 (System lean bank 1)
2006 GMC Envoy XL Denali 5.3L mode door VIN: 1GKET63M66
this is a good one, this envoy has auto temp control had no flow through the vents had a code for the mode door actuator installed mode door then the drivers temp door actuator stopped working i installed a new motor for that. recalibrated and all works good f...
1998 Oldsmobile Intrigue 3.8L Excessive Emissions, No Start, Misfire, MIL Lamp on, Floods VIN: 1G3WH52KOW
First of all thanks for taking the time to read this. I have a strang one here. Car came in on the hook, owner stated car started running rough, and stalled. She attempted to restart it and said that a lot of white smoke came out of the exhaust. I checked for ... Trouble codes: P0300 (Ramdom missfire)
2000 Pontiac Bonneville SE 3.8L Low Trac Light comes on Intermittently VIN: 1G2HX54K8Y
Hi & Thanks in advance for reading this lengthy one. Not sure if there is necessarily a problem here on not? The Customer probably veiws it as a problem but it may actually not be I just can't explain it with good enough reasoning. Complaint is "Low Trac" ligh...

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Park Avenue 3.8L Misfire VIN: 1G4CW52K1S
thanks to all that replied. I ended up replacing all of the coils and that corrected the misfire, but the same codes kept coming back in the ecm...all ninteen of them. It didn't run bad and had no MIL light on, but I wasn't satisfied.The boss was inclined to l... Trouble codes: P0703 (brake sw ckt), P0501, P0755 (shift solenoid B fault), P1361 (ign control signal not toggling), P0101 (mass air flow sensor circuit), P1619 (engine oil life reset switch circuit).
2002 Buick Century Limited 3.1L booster VIN: 2G4WS52JX3
closed with fix thank you to all who replied.It did happen to be a defective part.we checked for plugged vaccum ports or hoses every thing was good had approx 15 to 17 psiof vaccum.And also check all switch related cruz controll exc.
1995 Cadillac Eldorado 4.6L Mechanical VIN: 1G6EL12Y8F
i agreed with don from wisconsin , so i pulledf trans. everything went real smooth. drove it for two days after oil pan and rear main change looks good. thanks
1995 Chevrolet C1500 Silverado 5.0L vent mode VIN: 2GCEC19HXS
Thanks for the replies, I had to eat the first actuator and get another new one, I just hope my old tired brain will remember this the next time. The truck is fixed and out of here. Thank you all.
2001 Chevrolet Silverado 2500 HD LT 6.6L p0872 VIN: 1GCHK23182
hey thanks to all those that helped on this one i had to buy a new valve body for and install it more then once untell the E vavle stopped sticking on me all together the best fix for the sticking e valve is to install a new vavle body and then you need to le...
2004 Chevrolet Suburban 1500 LT 5.3L temp doors VIN: 1GNEC16Z04
As it turns out, someone else had replaced the left blend door motor with the incorrect one. Believing that the motor was defective, we replaced it with the same part number on THAT motor, and so my troubles began. The control head was, in fact defective and r...
2005 Chevrolet Silverado 2500 HD LT 6.6L master cylinder VIN: IGCHK23245
Well after replacing all brake parts containing rubber, master cylinder, all brake hoses, all calipers, abs valve assembly, and blowing out all steel lines this truck is fixed. Customer took truck on long trip and has been driving truck regularly. I have als...
2007 GMC Canyon SL 2.9L Stall VIN: 1GTDT19917
Thank you all for your replies. sorry I did not give enough info. The problem was indeed the cam relearn as alvero,eric and sam stated but what I did not think of is this is a cable company fleet vehicle and they have a ckt breaker that trips if the key is on...
2007 Saturn Sky 2.4L waterpump VIN: 1G8MB35B87
thanks for everyone who replied i did remove the balance shaft tensioner and reset it and noise is gone
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