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Prev Professional Automotive Repair Technical Discussions for September 23, 2013
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Open Help Requests for GM
Help Request Answers
2004 Buick Rainier CXL 4.2L Mode Door VIN: 5GADT13S14
This has ATC & has no flow out center vents. It came from 2 other shops. The customer said they now also had no heat. I scanned for codes with tech 2 have a current code B0424 & history codes B0263,B0424 & B3770. I assumed these codes were set from other shops...
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1987 Chevrolet El Camino 4.3L Poor Idle Quality, Stall VIN: 3GCCW80Z3H
Stalls & no power
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1998 Chevrolet C1500 Cheyenne 4.3L No Start, Cuts out, Stall VIN: 1GCEC14W3W
This truck has me scratching my head. It will start up, sometimes, when it does it runs excellent for 5-10 miles. then it will stall and only crank. Let it sit or keep trying and it will start, eventually. Shoot some either in the intake and it will start righ...
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2000 GMC Safari SL 4.3L No Start VIN: 1GKEL19W8Y
crank no start has 65 psi fuel pressue, has good spark and injector pluse. tried to do injector balance test could not get pressure to drop on any cly. could all inj. be bad.it acts like it wants to start when you releasew the key. also if I drain my fuel gaus...
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2007 GMC Sierra 1500 SLT 5.3L transfer case VIN: 1GTEK19017
We have a truck that will not go into 4x4 or out after it is in sometimes.Have run several test and they are good.Power and grounds good.Will start to work as soon as we try to work on the thing.Code c0306 either a short or open.Suspect it may have a shift mot...
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2002 Pontiac Grand Am SE 3.4L Starter Circuit VIN: 1G2NF52E52
Good evening to all. Vehicle came in with a crank but no start complaint. Ignition spark good, fuel injector pulse good, power to fuel pump, good. No fuel pressure. We replaced the fuel pump and vehicle ran until we shut the vehicle down to clear a check engin...
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2002 Pontiac Sunfire GT 2.2L Engine overheating VIN: 1G2JB52442
Hello Freinds I have this 2002 Pontiac Sunfire 2.2 Liter that over heats sometimes and has me confused,The customer says that it over heats on him. I have the car in the shop and sure enough it overheated. I run a block test with the blue block tester fluid, ...
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2004 Pontiac Vibe 1.8L Mechanical VIN: 5Y2SL62864
Vehicle is for my dealer customer so no history at all on it. Came in with loud timing chain noise. Pulled valve cover and noticed chain was not tight between cam sprockets. Also noticed by the appearance of the silicone on the timing cover that someone was in...
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2005 Pontiac G6 GT 3.5L Brake Lights VIN: 1G2ZH52875
Greetings fellow techs, Got a strange one in this afternoon that I need a little help with. 2005 Pontiac G6 came in with brake lights not working properly. Here's what happens-Anytime the key is on or car running the brakes lights are on. If you step on the br...
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1999 Saturn SL 1.9L MIL Lamp on, erratic idle@coldsta VIN: 1G8ZF5281X
Received this vehicle last week with CEL on. Customer stated engine idles erratically and revs up,especially when cold. Was told by service advisors that everyone at the shop has tried to fix this without success and ticket was given to me. The EGR valve has b... Trouble codes: P0122 (tps sensor A circuit low), P0405 (EGR sensor A circuit low), P1404 (EGR Performance), P0452 (Evap Emission System Pressure Sensor Low)
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Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Avalanche 1500 North Face 5.3L No Start VIN: 3GNEK13T23
THANKS FOR ALL WHO REPLIED BUT THE BIG WINNER WAS VINCENT [...] WITH HIS TIP TO CHECK GROUND C102 UNDER #3 CYLINDER. IT FELL OFF WHEN I TOUCHED IT. IT WAS INTACT ENOUGH TO GIVE ME A WEAK PULSE AT THE COILS, BUT NOT ENOUGH FOR GOOD SPARK. REPAIRED WIRE AND WOR...
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2005 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 1GCEK19B55
WE SENT THIS ONE DOWN THE ROAD AND ALL IS WELL.WHAT WE FOUND IS WHERE THE SENSOR TANG GETS BOLTED TO THE BLOCK THERE WAS A BUILD UP OF RUST AND OXIDATION WE CLEANED THE SURFACE AND PROBLEM SOLVED.THANKS FOR ALL REPLIES. Trouble codes: P0343.
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2005 GMC Envoy SLE 4.2L Mechanical VIN: 1GKDS13S05
I had already looked at many of the suggestions you have given. Trans mount clean and in good condition. Exhaust system insulators in good condition. Found no contact with anything between powertrain and frame/body. I removed the fan/fan clutch and ran the eng...
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1992 Oldsmobile Cutlass Supreme 3.1L MIL Lamp on VIN: 1G3WT34T3N
Well Thanks to all that replied, turns out what most of you suggested (replacing signal and ground wires coming from ECM)would have fixed the problem. I traced the wires going from ECM and where the harness routes by the Compressor there is a metal clamp that ... Trouble codes: 14 (COOLANT temp. sensor signal low or shorted).
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2005 Pontiac Grand Prix GT 3.8L Mechanical VIN: 2G2WS52215
thanx again for all the replies.i took the lets keep it simple approach.flushed the heater core and get great head.155* duct temp.car came in with warm engine and both hoses hot so was thinking core was open.got a slug of dried dexcool out of it.down the road....
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