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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 7, 2012
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Open Help Requests for GM
Help Request Answers
2008 Buick Enclave CXL 3.6L a/c cut-out VIN: 5GAER23748
thanks for taking time to check this one out! car came in with an empty refrigerant system. leak was traced to evap core. core was replaced and had 2 problems. first, a connector near console was left unplugged which caused a ground to backfeed and smoked bcm....
1984 Chevrolet P30 7.4L Stall, Misfire VIN: 1GBJP37W4E
Thanks in advance guys, this rv has just had rebuilt motor put in, customer blew up the first driving in second. Startimg and idling are no problem. When under heavy accel and the secondaries start to open there is backfiring through the carb. When just cruisi...
2000 Chevrolet Venture 3.4L cylinder heads VIN: 1GNDX03E2Y
Disassembled the engine to remove the cylinder heads. I must say that AllData's instructions for R&R leave a lot to be desired. LOTS of steps omitted in the instructions. Before I send these heads out for crack checking, etc., I'd like to know if anyone can te...
2003 Chevrolet Cavalier 2.2L noise VIN: 3G1JC52F63
Car towed in as a No Start, did typical testing found dead fuel pump, installed new pump assy(complete tank module assy) and new external fuel filter, customer returns next day with a strange noise?? says its fuel pump, sounds like loud humming/buzzing noise??...
2003 Chevrolet Silverado 1500 4.3L Cooling Systems VIN: 1GCEC19X13
I have this Chevy 4.3 L that is running hot. The Radiator, Water Pump, and Thermostat has all been replaced trying to fix this problem. It will not get hot until it is ran down the road for 5 miles or so (will NOT overheat at idle). It will peg the temp gauge ...
2006 Chevrolet Uplander LS 3.5L Instrument Panel Cluster, Starting, Radio, HVAC VIN: 1GNDV23L06
Customers complaint was cruise works for a couple miles and then quits. Blinker works for a few blinks and then quits. ABS and Theft lights will come on. DVD will switch to radio and say rear audio failure. All of these concerns have been verified and will hap...
2007 Pontiac Grand Prix 3.8L low beam lights VIN: 2G2WP55257
Hello and thanks in advance I have a customer here with a no low beam lights. I have checked the wiring on this and everything seems fine no shorts or bad grounds that i can find. All fuses and relays check out ok. This does have a aftermarket starter alar...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Trailblazer North Face 4.2L loss of power VIN: 1GNET16S13
thanks for all the replies. i finally got fed up with it and had him take it to another shop. i got a call from the customer and the other shop fixed it with a catalytic converter. i am baffeled at this. i drove the vehicle with the o2 sensor out and also drov...
1993 GMC K1500 Suburban SLE 5.7L speedo/ transmision VIN: 1GKFK16K2P
Wow did this vehicle have us going in circles. We finally with the fluke scopemeter looked at the signal from the speed sensor. It had a good signal but went away when plugged in. I did not realize that we were seeing the signal on a 0-1 volt scale instead of ...
2006 GMC Savana 2500 6.0L Calipers VIN: 1GTGG25U76
I removed the front pads and inspected .The pads were right up,but The left side had some bad cracks.Replace the pads and give back for testing to customer. He has reported that concern has been resolved .I would like to thank everyone ; I followed up on thei...
1989 Oldsmobile Cutlass Calais S 2.5L Excessive Emissions VIN: 1G3NF14D2K
Thank Timothy from Wisconsin After replace the CAT with a CAT that is CA certify, that good enough to pass the tail pipe emission. You also right about GM used valve overlap system for controlling Nox. This car is a first time customer. This car just got... Trouble codes: N0NE.
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