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Prev Professional Automotive Repair Technical Discussions for April 17, 2013
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Open Help Requests for GM
Help Request Answers
1992 Chevrolet S10 Blazer Sport 4.3L compressor VIN: 1GNCS13W8N
I would like to replace compressor with after market 1 like on hotrods. Anyone know where or if anyone makes a kit, brackets, ect for sanden type compressor? Thanks in advance. This is my personal vehicle & I plan to keep it forever.
1993 Chevrolet Corvette 5.7L No Start
Hi all, this Corvette came into our shop a few months ago on the hook with a no-start condition. After diagnosis we found a bad optispark distributor and replaced it with an oem unit and the car drove away. Two weeks after that we get a call from the owner, he...
2003 Chevrolet Astro 4.3L Hydroboost VIN: 1GNDM19X73
Customer replaced power steering pump. Now when started, brake pedal goes down and applies brakes. Checked valve in pump and o-ring is in correct groove not blocking hole. Valve is not the one from the old pump but one that came with reman pump. Could it be a ...
2003 Chevrolet S10 LS 4.3L MIL Lamp on VIN: 1GCDT13X93
testing for P0446 (NOT PLUGGED VENT) fuel tank pressure volts read 1.5 KOEO but jump to 2.9 when i cycle the key to on just while fuel pump runs. Then when i start the vehicle the voltage goes to 2.9 and stays there, fuel cap off, canister hose unplugged. foun...
2008 Chevrolet Cobalt LT 2.2L No Start
We bought this car as a repo with a NEW Key un programmed, got it home and tryed the 30 minute relearn several times with no luck, took it to our locksmith andhe could not get to learn, brought it back and noticed it had NO check engine light and part of the f... Trouble codes: U2106 (loss of communication), B3031 (Security system), B3935 (undocumented Theft)
1999 GMC Savana 3500 5.7L Poor Idle Quality, Cuts out, Stall VIN: 1GDHG31R3X
Customer has a fleet of these box trucks. On a hot day usually driving over 45 min. Truck will lose power and barely run, sometimes cut off. Owner will drive up there open hood and let it cool for an hour or so and it runs fine. I have not got them to act up, ...

Fixes & Summaries for GM
Fix/Summary Answers
2006 Chevrolet HHR LT 2.4L eps VIN: 3GNDA23P86
I took this vehicle to a competitor with a laser based alignment machine to double check my work. Competitor confirmed the alignment. Following the competitors alignment the memory steer was still there. Brought vehicle back into our bays and started going bac...
2012 Chevrolet Silverado 3500 HD LTZ 6.6L Won'T Run Sometimes VIN: 1GC4K1C89C
Thanks everyone for the help. Learned a lot.the main problem was the connection at the transmission module on the fan shroud.In testing the resistance at the data connector we noticed that when the problem was there it was 130 ohms or whatever, but when it was...
2012 GMC Terrain SLT 2.4L power liftgate VIN: 2GKALWEK6C
As the old saying goes.."if you want it fixed right, do it yourself"..a special thanks to Richard from Texas..his first post nailed it..I decided to check out the truck myself and I dont know how in the H the other shops and my guys missed the broken wires and...
1994 Pontiac Bonneville SE 3.8L No Start VIN: 1G2HX52L8R
The problem is with the harness from ICM to crankshaft position sensor, I load tested it with a headlamp and flexed the harness during testing and it would break down the circuit, customer has to wait for money to repair at this time. Thanks guys for all the t...
2003 Saturn Vue 2.2L Unknown VIN: 5GZCZ43D53
ok we reprogram the tcm and vehicle speed reads good on tcm pid but tranny is still not shifting. we think is probably a problem with the valve body don't know for sure. owner sold the car to someone else. sorry for not posting a fix, and thanks for all the he...
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