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Prev Professional Automotive Repair Technical Discussions for October 15, 2014
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1994 Chevrolet Caprice Classic 5.7L timing cover VIN: 1G1BL52P9R
This Caprice keeps leaking oil from the timing cover, we have replaced the seals twice now & installed a new distributor, a new water pump driveshaft, & have replaced the crank seal & put a speedy sleeve on the harmonic balancer. The car was first worked on at...
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2007 Chevrolet Uplander 3.9L cooling fan VIN: 1GBDV13187
We have a 2007 uplander with an intermittent p0480. It came to us with an empty cooling system. We replaced the rad because the tank was split. It came back while I was away and the apprentice said head gasket. It overheated again after the head job. Cooling f...
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2007 Chevrolet Silverado 2500 HD Classic LS 6.6L fuel VIN: 1GCHK23D97
I am working on a 2006 6.6 duramax and can't get it to run. Drove in a couple months ago but ran very poor like a misfire. then stopped running completly. Will start on starting fluid but then stalls when runs out of starting fluid. Replaced the Injecton pump ...
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2007 Chevrolet Suburban 1500 Z71 5.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNFK16377
Officially stuck on this one. Misfire at idle Cyl. #3 Compared all readings with non-misfiring cylinder and both are identical - 150 lbs compression - 10% cylinder leak down - running compression the same - keep in mind on this LC9 that cylinder #3 is not one ... Trouble codes: P0300 (Cylinder Misfire)
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2008 Chevrolet HHR SS 2.0L Surge, Cuts out, Over Boost VIN: 3GNDA63X08
We have a 2008 HHR SS with a 2.0 Turbo. On decent accel the turbo puts out 25 psi of boost on the factory gauge, 275kpa on my scan tool. The wastegate solenoid PID is showing 95% when it act up. There is not a lot of info on this motor in Alldata. I suspe... Trouble codes: P0234 (Turbocharger Overboost)
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2012 Chevrolet Sonic LS 1.8L Oil Pressure VIN: 1G1JA5SH4C
Thanks in advance to all IATN members! This car is part of a fleet of delivery vehicles. Cause of high mileage. Vehicle originally came in with a complaint of oil light on and MIL illuminated. Had a code P0011 (intake cam position system performance). First ch...
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2005 GMC Envoy Denali 5.3L door lock VIN: 1GKET63MX5
i have a 2005 gmc envoy rear hatch wont comunicate with scan tool cant get door lock working it just sets and makes a clicking noise all the time
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2004 Pontiac GTO 5.7L Cuts out, Misfire, Reduced power VIN: 6G2VX12G94
This car came in with complaint of no engine power. We checked for codes and none were present but if you turn off the traction control system the car runs great with no problems. Turning on the traction control system it goes back into reduced power.We scanne...
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2007 Saturn Aura XR 3.6L speedometer VIN: 1G8ZV577X7
replaced the transmission. now speedometer in accurate. scantool data shows proper speed but ipc only shows about 30% of speed i.e. 50mph displays 15mph. oss match iss in 4th gear. all grounds checked. alldata says replace ipc but im not buying it becouse ipc ...
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Fixes & Summaries for GM
Fix/Summary Answers
2008 Buick LaCrosse CXL 3.8L Bcm
As always thanks to everybody who took time to reply. Special thanks to Brian for turning me on to compnine.com. Reasonably priced and has the information your looking for. Also thanks to Craig for offering to look it up for me.
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2006 Chevrolet Colorado LT 3.5L Poor Idle Quality, Hesitation, Cuts out, Stall, Lack power VIN: 1GCCS19646
WELL ITS FIXED. I FIGURED IT WAS EITHER THE SOLENOID, TIMING WAS OFF, OR THE ACTUATOR WAS BAD. SO I DECIDED TO GO WITH THE CHEAPER LESS TIME CONSUMING ONE FIRST WHICH WAS THE SOLENOID. DIDNT TAKE A MILE FOR IT TO STALL BACK OUT. DECIDED TO HECK WITH IT AND TOR... Trouble codes: P0017.
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2011 GMC Acadia Denali 3.6L HVAC System - Automatic VIN: 1GKKVTED8B
The original concern was that the HVAC system was stuck on the defrost mode with the AC on. Therefore in the summer time the windshield would begin to fog up and would not blow cold air directly on the driver/passenger. Diagnostics were performed as per the Mi...
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