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Prev Professional Automotive Repair Technical Discussions for November 8, 2008
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Help Request Answers
2008 Buick Enclave CXL 3.6L reverse VIN: 5GAER23798
This 2008 buick enclave with a 6t70 transmission it jsut stop reverse but it will drive but will not shift. this is the first time i am working on this type of transmission Is the reverse a manual gear or is it control electrically have any one seen this befor...
1997 Chevrolet Monte Carlo LS 3.1L MIL Lamp on, EGR low flow VIN: 2G1WW12M4V
Customer brings car in due to MIL light on and has no other complaints. Checked codes and found P0410 EGR flow low and P0134 Bank 1 sensor 1 sensor slow switching. Checked flow chart and found that MAP sensor is used to detect EGR flow on decel above 30 mph. C... Trouble codes: P0401, P0134
1998 GMC Savana 2500 4.3L Surge VIN: 1GTFG25W2W
Heavy surge under load, most noticeible in 2nd gear./ Idle fine,/ O2 sensors run full range and switch ok. No vac. leaks/ When EGR. is disconected no surge, runs good. My main question is there a way to tell when the injector assy. is getting restricted or go...
2002 GMC Yukon XL 1500 SLE 5.3L 2-3 shift VIN: 1GLFK16Z22
This is the first time ever posting. I have a 02 yukon xl 4x4 with towing, it has no codes showing, this vehicle when shifting from 2nd to 3rd under power it will go from 3000 rpms to 4000 before it will hook up. I thought for sure it was clutches so we pulled...
1991 Oldsmobile 98 Regency Elite 3.8L Poor Idle Quality, MIL Lamp on VIN: 1G3CW53L8M
I replaced cam sensor, and code remained. Removed sensor and checked magnet on cam gear. The magnet is gone, just the plastic holder remains (in pieces). Is the magnet replaceable through the sensor hole, or does the front cover have to come off, so the cam ge... Trouble codes: 41 (Cam Sensor)

Fixes & Summaries for GM
Fix/Summary Answers
1993 Buick Park Avenue 3.8L Hesitation, Stall, hard starting cold VIN: 1G4CW53L5P
Hello fellow techs. This was very interesting to find. After testing coils, rechecking MAF & PCM, cam & crank sensors again, I remove the injectors from intake manifold and found carbon build around port holes. After clean holes and injectors, vehicle fires...
1985 Chevrolet S10 Blazer 2.8L Mechanical VIN: 1G8CT18B3E
We tryed freeing up T.V. when truck was warmed up valve would work after removing pan and findind a bunch of crap I recommended replacing transmission customer wanted to just a trans service its back for a new trans.
2004 Chevrolet Malibu 2.2L readiness VIN: 1G12552F14
Thanks to everyone who replied. I had two monitors open: sensor heater and EVAP. To pass IL emission, the vehicle is allowed to have only one open OBD2 monitor. EVAP will not run without both O2 monitors run, so I had to close the heaters. I did look at the Mo...
2005 Chevrolet Equinox LT 3.4L Poor Idle Quality, Stall VIN: 2CNDL73F35
THANK FOR ALL THE REPLIES! You pointed me in the right direction. The customer admited to topping off the fuel tank after it was full. I told him to stop when the pump clicks off the firts time an so far its working just fine. The more I think about it your ri...
2007 Chevrolet Silverado 1500 WT 5.3L very high idle VIN: 2GCEK13M77
hi fellow technicians,i need to inform to all of you,that we had to take this truck to the GM dealership,they reprogramed the computer for us,they updated the software with new calibration information.old#[...]=new software to ensure proper et...
2005 Saturn Ion-3 2.2L wheel came off VIN: 1G8AW12F45
Hello all iatn members my mistake in telling you the wheel nuts were aluminium they just feel alot lighter than regular wheel lugs, it looks like to me the lug nuts were slackend off, and the wheel came off ,thank you all for the replys
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