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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 6, 2012
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Open Help Requests for GM
Help Request Answers
1982 Chevrolet Corvette 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1AY8785C
this will be the third time i've put this on iatn. each time i thought it was fixed. this car has new computer,dist. cap rotor and wires. tps. if you drive this car normal its not bad, but if you floor it it feels as thou its dropping clyinders. no check engin... Trouble codes: P0042
1994 Chevrolet Camaro Z28 5.7L Excessive Emissions VIN: 2G1FP22P7R
While connecting my solus to the DLC, The Secoundary air system pump starts to run contenualy until key powers down or I disconnect the scanner? Also Cooling fans will not run but ECM show cammanding them on but no fans? will over heat on dyno (smog test) does...
2000 Chevrolet Impala LS 3.8L Drl VIN: 2G1WH55KXY
Vec day time lamps will come on by self day time or night time all by self when vec is off draining battery.Thought it was Ing switch lasted 3 weeks now back in shop I found heavy corosion at left head lamp capsule in main plug donot quite understand how elec....
2001 Chevrolet Tracker ZR2 2.5L Cuts out, Stall VIN: 2CNBJ73481
Hey guys need some help on this monster. Vehicle came in, the problem is whenever it is put into gear(Rev,Drive,M1,M2) the engine will stall being put under the load. Had originally believed that the problem was in the transmission so the trans was replaced an...
2002 Chevrolet Silverado 3500 6.6L Cuts out VIN: 1GCJK33112
Hello fellow techs. I have this 02 chev p/u that falls on it's face on a heavy accel from a stop. it takes off good for about 4 seconds then falls down for about 2 seconds then picks back up a goes again. This only happens once every time you start out again f...
2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on VIN: 1GNET16S83
Hello, thanks in advance for any ideas or experiences shared. BACKGROUND/HISTORY: This vehicle came into my shop after already having been to the 2 seperate dealerships. While in their care there were a few repairs performed: APP replaced, PCM replaced, and ... Trouble codes: P1271 (App 12 correlation error)
2005 Chevrolet Impala 3.4L Misfire VIN: 2G1WF52E05
Car belongs to a used car dealer.it came to us for a missfire. We changed plugs, wires, one ignition coil & fuel filter. Upon test drive it seemed to run fine & did not register significant missfires on tech ii. Vehicle also had excessive lifter noise. This we...
2007 Chevrolet Silverado 3500 HD LT 6.0L No Start VIN: 1GBJK34K77
Customer drove to to U-Hall to get an electric trailer brake controller. They pulled down the 4 wires that were taped to the harness by the DLC connector, they now stripped the blunt ends and connected their trailer brake controller, No Crank, No high Beams,... Trouble codes: U0140 (Loss of Communication with BCM)
2008 Chevrolet Impala LT 3.5L tire inflation reading VIN: 2G1WT58N48
We have recently purchased the new Snap On tire inflation monitor system TPMS3 due to increased inflation monitor complaints. Since we're new to the game we've been solving issues as they develop. This vehicle needs some outside advice to confirm my own suspic...
1993 GMC K1500 Suburban SLE 5.7L Cuts out, Stall, Poor Fuel Economy VIN: 1GKFK16K9P
Vehicle will not idle, must hold rpm over 1200, and in this scenario truck has all its power and fuel mileage. When setting base timing found that truck will idle on its own while spout connector or distributor lead is disconnected, but of course has no power ...
2003 Saturn Ion-1 2.2L Ignition VIN: 1G8AG52F43
I removed the ignition lock cylinder to have the key cut when put back the vehicle will not start replaced electricle switch and tried to reset after ten min. It will re set but when i start the vehicle the starter cranks once then security lite flashes any he...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Cadillac DeVille DHS 4.6L compressor
hi fellow tech it was great to hear from everybody.Before I placed this request I had tested and replaced the three prong switch at the compressor.when it still didnt work I thought that I screwed up.well I didnt after a lot of add. diag I came back to the th...
2007 Chevrolet Silverado 3500 Classic LS 6.6L amp guage VIN: 1GCHK33D87
Thanks for ALL the good information. I new you guys would come thru:). I haven't talked to the guy yet but I can reassure him like I tried to do earlier that his truck is operating normal. Until next time, happy wrenching.
2002 Saturn SL2 1.9L w/bearings
well, the vehicle is gone again... will wait n see i guess. I had a lot of incorrect torque suggestions, and installer error hints... well we replace a lot of bearings in here, and no issues outside of a couple saturns. If/when the car comes back I will try an...
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