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Prev Professional Automotive Repair Technical Discussions for February 21, 2012
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Open Help Requests for GM
Help Request Answers
2008 Cadillac Escalade EXT 6.2L Electronic Susp. Control VIN: 3GYFK62878
OK GM?Cadillac Tech's I need something to work with here! I'm Banging my head against the wall with this one! Vehicle came in with "Service Suspension System" light illuminated on IP Information center. Scanned for DTC's; Retrieved a C0660 - Level Control Exha...
1999 Chevrolet Blazer 4.3L 4w4 VIN: 1GNDT13W4X
good afternoon fellow techs i am really stumped on this one. customer came in saying 4x4 did not work so he put in a new 4 button switch and it when into 4x4 low, and won't come out. 4x4 light in instrument panel not coming on, auto 4x4 light and 4x4 light on ...
2003 Chevrolet S10 2.2L No Start VIN: 1GCCS14H43
Hello Techs. I need help and advise with the pick up, it acting unused way. The Pick up truck drove in for replace the front brake job and 2 front rotors, after finish the work try to move the vehicle to the parking lot, it start and shut off right away, it wo...
2003 Chevrolet Tahoe LT 5.3L electronic controls VIN: 1GNEK13Z73
this vehicle came in with compaint of 4wd stopped working. lights on switches all off. scanner gives "no communication" message when trying to access t. case module. communicates with all other modules. checked power and grounds to module, checked serial data ...
2004 Chevrolet Silverado 1500 Z71 5.3L driveshaft VIN: 1GCEC14W34
Hello, I have a 2004 Chevy silverado here and when I shift between drive and reverse and back i get a snap which sounds just like a u joint but the u joints are fine, pulled out driveshaft and physically checked. It sounds like in the diff but it echos in the ...
2001 GMC W5500 Forward W5R042 4.8L Exhaust brake VIN: J8DE5B1411
Please help if you can... This truck came in with the exhaust brake inop & frozen. Installed new exhaust brake & solenoid, Now when driving you let off the accelerator & the exhaust brake indicator light comes on but there is little or no brakeing feeling. It ...
2001 Oldsmobile Intrigue GL 3.5L Surge, Cuts out VIN: 1G3WS52H31
This car will surge when cruising with engine rpm between 1200 and 2000. The surge is about 100 rpm up and down. It will intermittantly cut out under light acceleration when between 30 and 45 mph. The cut out lasts about .5 second or less. When it cuts out, th...
1996 Pontiac Grand Prix GT 3.4L alternator VIN: 1G2WJ52XXT
Hello All:I have this vehicle that just came in and customer states when acellerating hard the battery lite comes on.I couldn't duplicate the problem but what i find is sitting in park at idle my voltage is 13.8v with all lights and heater fan on high.When i b...
2009 Pontiac G3 1.6L Misfire, MIL Lamp on VIN: KL2TD66EX9
Hey all, I have what should be a pretty easy one in my bay that is driving me up the wall. Vehicle came in, customer complaint that it started misfiring this weekend. I get in and at idle is seems to feel ok.(No misfires on the misfire counter). When I brake t... Trouble codes: P0300 (Random Misfire)
2001 Saturn SL1 1.9L Harsh shifts at times, 2-3 flare at times. VIN: 1G8ZH52811
I have a good customer here with a trans problem. The problem is intermittant, but I have experienced it. The symptoms (when duplicated) are a very harsh shift into reverse (feels like it's going to bust something) also harsh shifting into drive and when upshi...

Fixes & Summaries for GM
Fix/Summary Answers
1993 Chevrolet Beretta 3.1L No Start VIN: 1G1LU13T8P
Thank you all, it turned out to be the ignition module again, we took some advice from one of you and replaced all the coils, the car has 500 miles on it now doing great...I did talk to identifix and they informed me that on these type modules, you can just pl...
1997 Chevrolet Astro 4.3L Cuts out, Stall, Misfire VIN: 1GNDM19W0V
sorry for the delay in closing this help request but vehicle appears to be fixed,we replaced fuel pressure regulator that helped some,also replaced the o2 sensers which cured the problem,vehicle has been gone over a couple weeks and have not heard from the cus... Trouble codes: P0108, P1106, P1381.
1999 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GNEL19W1X
Thanks for all the tips when double checking the injection timing found -19 pulled dist replaced gear modifyed hold down adjto zero fixed miss Thanks again Tadd Trouble codes: P0300.
2004 Chevrolet Venture LS 3.4L Cuts out VIN: 1GNDU03E54
This van is fixed! Thanks to all who replied. Almost everyone said plugged exhaust and it was the converter. I have fixed many vehicles with plugged/broken cats and I should have gone that direction right away especially with no codes but it ran so good unti...
2006 Chevrolet Cobalt LS 2.2L MIL Lamp on VIN: 1G1AK55F86
After further testing, we felt that the aftermarket O2 Sensors were not performing properly. We swapped them for factory O2's and the customer has had the vehicle for almost a week now with no issues. If anything pops up, I will re-post, but so far so good!! Trouble codes: P0133 (O2 signal slow bank [...]).
2001 GMC Sierra 2500 HD SL 6.6L Hydro Boost VIN: 1GTHC23141
This truck is fixed, it was the PUMP or something in the pump. The pump shaft was intact (it was producing 1900 psi max pressure before). The owner agreed to "try" a new pump, since my local dealer had a brand new pump w/everything including reservoir and regu...
2008 Pontiac Grand Prix 3.8L Starting VIN: 2G2WP55278
The customer decided to just use vehicle as is, are first suggestion was to get the proper battery with the proper rating into the vehicle. She has not returned for any further diagnostics at this time. Thanks for you assistance guys.
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