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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 29, 2008
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Open Help Requests for GM
Help Request Answers
1994 Buick Century Special 3.1L No Start, no mil lamp VIN: 1G4AG55M3R
Thanks for taking the time to read this request. This century was towed in as a no start. Upon checking over found there was no mil coming on with key on, went thru the A-1 chart for no mil and found everything said pcm bad. Gave customer the news with price o...
2003 Buick Rendezvous CX 3.4L loss of heat VIN: 3G5DB03E93
Car came in with a no heat condition and low on coalant. the intake was leaking so new gaskets and a new t-stat were put in, Now the car losses heat, over heats and has lots of air bubbles in the cooling system after 50 or so miles. I put in another t-stat and...
2002 Cadillac Escalade 6.0L gear box and hydro boost VIN: 1GYEK63N62
is it possible that a restriction at the gear box could cause the hydroboost to go in op also. or has anyone ran into this issue before, and what did you do to correct it. thanks to all that read this.
1986 Chevrolet K20 Custom 5.7L Cuts out VIN: 1CCGK24M0G
Hey guys, This is a really strange one. Truck was towed in for stalling under cruise and accelleration. It idles fine most of the time. It was in about 2 months ago for water in the fuel due to rain getting into the sending unit seal- replaced both items with ...
1995 Chevrolet Blazer 4.3L No Start
Hello we have a 1995 s-10 blazer came in no start. The injector tested bad (open no resistance) fuel pressure is about 65 koeo. We put in the injector and it acted like it would start then nothing.We checked for inj. pulse and found none. The crank sensor is w...
1996 Chevrolet C1500 Cheyenne 4.3L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1GCEC14WXT
vehicle came back with customer complaining of poor fuel economy. said truck ran good for about one week then he noticed lots of carbon coming from exhaust when idling and fuel mileage down. have checked fuel pressure, fuel pressure regulator and egr all look ...
1997 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL52M9V
this car keeps setting a po401 code. trying to get it to pass inspection. the car does have a lot of miles which may be a factor. however it runs amazingly well for its miles; no misfire, starts easy and runs smooth. i have replaced the egr valve and the ports... Trouble codes: P0401
1998 Chevrolet Astro 4.3L Misfire VIN: 1GCDM19W7W
hello need some help here. this one is got me thinking im crazy. 1998 chevy astro van 4.3 motor. came in with service light on and running rough. we have a po300 cylinder misfire. check with modis and it is on [...].did compression test it turned out 150lb... Trouble codes: P0300
2001 Chevrolet Prizm 1.8L Hesitation, Cuts out VIN: 1Y1SK52861
Hello, this one is making me bald. When started cold, it will accel fine, after going into closed loop, when accel from idle or cruse, the engine will hesitate for the first quarter of the throttle, after that its fine. Can do this driving down the road, or at...
2002 Chevrolet Tracker 2.0L blower motor/ headlights VIN: 2CCNBJ13C4
This Tracker's blower motor will operate with key off. Off switch will turn it off, but works in all positions. Relay is good. Also, the headlights will not go off. You can hear relays under dash clicking away. Grounds behind both kickpanels are good. Any inpu...
2006 Chevrolet Silverado 1500 LT 5.3L 4wd high VIN: 2GCEK13T36
This truck came in with no pull in 4wd low and 2wd and terrible scrap iron noises when rolling. I replaced the transfer case with a used one. It now pulls fine and no noise. It would not however go into 4wd low. It would make a few attempts then go back to the...
2001 GMC w3500 350CID core VIN: 4KBB4B1R21
we can not find info on how to change this heater core on this cab over , we went to the dealer and 2 truck shops, we get diagrams, but not a step by step -our local rep called us from mitchell and all data and he could not find it , i tried on line to pay and...
2002 GMC Sierra 1500 SL 5.3L unknown VIN: 2GTEK19TX2
This truck has an intermintant "hiss" noise from under the right side of the hood. The "hiss" lasts about 5-20 seconds. It will repeat every few minutes. It has gotten more prevalent over time. Customer has had it to the dealer a few times with no resolution....
2004 Oldsmobile Alero GL 2.2L Starting System, Security? VIN: 1G3N154C14
Happy Holidays Gentlemen!, I guess I am praying to the GM gods out there. I have an OLDS Alero I can't seem to figure out yet. The vehicle was towed in after sitting for months. The customer said the vehicle just would not start one day and the key fobs would...
2004 Pontiac Grand Prix GT1 3.8L Heater Core
Need to replace leaking heater core on personal car at home. Do not have access to All-Data this week to find replacement procedure. Looked at heater box under dash and looks like the heater box is not screwed together, but molded together. My question is, doe...
2001 Saturn SC1 1.9L Poor Idle Quality, Stall VIN: 1G8ZP12831
I got this car as a stalling problem,..with Snap-On scanner unable to control idle under 1200+- RPM,..after cleaning no change,..replace IAC motor,..now I am able to control idle speed top to bottom,..NOW the idle will go and stay at 2500 rpm of 1500 rpm,..the... Trouble codes: P1599 (engine stalled)

Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac DeVille Concours 4.6L rack VIN: 1G6KF5499V
Scott from virginia had a great idea, i disconected the return line at the pump as sugested and sure enough the fluid would stop flowing when turning to the right but not to the left, i replaced the rack and flushed the system!!! problem is solved. thanks agai...
2000 Chevrolet Blazer LS 4.3L transfer case VIN: 1GNDT13W3Y
transfer case shift module was the problem. thanks for the help, some of the answers I had already tried.
2002 Chevrolet Silverado 1500 5.3L trans VIN: 1GCEK19T22
yes its fixed i had five replys 3 of the five suggested wiring issues which proved to be the cause. when the trans was overhauled and the new filter was installed one of the shift solenoid wires was pinched between the filter and valve body.it was actually ver...
2006 Pontiac Vibe 1.8L MIL Lamp on VIN: 5Y2SL65846
some suggested taking reading on the vehicle and comparing them to our from known good vehicle this was done and there was no noticable differnces in the data readings . after talking to the other repair shop we found that this vehicle had been in a small acci... Trouble codes: P0136, P0136.
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