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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 26, 2005
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Open Help Requests for GM
Help Request Answers
1991 Buick Park Avenue 3.8L compressor VIN: 1G4CW53L9M
vehical came in with locked up compressor. replaced system, flushed and retro fit to 134a. returned about a month later, no cold air, repaired leak at new fitting. two weeks later vehical returned, no cold air. system was fully charged, no power to compressor....
1997 Buick LeSabre Limited 3.8L Fuel gauge VIN: 1G4HR52KXV
Hello all, I'm posting this for the owner of our shop. The fuel gauge in this vehicle intermittently fluctuates and has erratic readings. With a 1/4 of a tank of fuel, the gauge will slowly rise to full. Sometimes it will stay here for an extended period and o...
2003 Buick Century 3.1L MIL Lamp on
This car came in with a MIL light on. P0171 lean code .We checked fuel pressure ok,replaced fuel filter and front O2 sensor and light came on again for the people.We were thinking fuel regulator or vacuum leak but dealer said they don't have problems so we dec... Trouble codes: P0171 (Lean bank)
1987 Cadillac 3.0 3.0L Possible Body Control module VIN: WD6VR52RK9
1997 Cadillac Catera. Car runs fine and at times the radio justs kicks off. It's the non bose system. I thought it was the radio but I've been working with the radio shop and it's not. When the radio shuts off to get it back you have to shut off the car and re...
2000 Cadillac Escalade 5.7L No Start, Engine dies @ 50mph VIN: 1GYEK63R1Y
Going down the road at 50mph the client complains that the vehicle dies. At times will not start. Have not been able to recreate the problem.
1968 Chevrolet Camaro 5.7L Excessive Emissions, Poor Idle Quality, Surge, Stall VIN: 123378N408
Hello Everyone, This one is a bit concerning for me. This 1968 Camaro has had a newer '93 Corvette LT1 installed in it... but not by me. The whole job is a bit sloppy, but the customer swears it used to run much better, though it had a random miss from time t...
1994 Chevrolet Astro CL 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1GNEL19W5R
this post is for a friend of mine and it is his wifes car. this car was running rough and now it bearly runs. when you go just off idle car stumbles boggs real bad and then if you hold it floored it will semi over come and will run like it is missing. there is...
1995 Chevrolet Blazer 4.3L engine VIN: 1GNDT13W8S
Hello I have a customer that has overheating problems. If he drives it without the a/c temp runs about 190-210. With the A/C on and the outside temp in the 90s driving or idleing the gauge goes up to 230-240 when A/C is turned off the temp goes down to 190-210...
1999 Chevrolet Cavalier LS 2.2L Starting VIN: 1G1JF5242X
this car came in as a no start. the car started with the throttle at about 2 percent. we did component test and found the iac valve was not working, ok simple fix. not. we replaced the iac and the car started right up ran down the road fine. went to return to ...
2000 Chevrolet Silverado 1500 5.3L battery drai VIN: 1GCEK19T6Y
pickup has enough drain to kill the battery in 2 days. no lights are on. we pulled fuses until the drain is gone but no fuse was the main draw. we pulled the rap fuse and that didn't make a difference and when we pulled power at the distribution box our drain ...
2000 Chevrolet Blazer LS 4.3L Cuts out VIN: 1GNDT13W2Y
When power braking, vehicle cuts out. It reacts the same under hard acceleration. The best description I can offer is that it feels exactly like a rev limiter but I'm running less than 2000 RPM. I have no CEL, no other odd readings. My digital gauge shows a st...
1995 Pontiac Sunfire SE 2.3L compressor VIN: 1G2JD12D25
we have a 95 sunfire that the a/c clutch does not engage. the pcm is not engaging the ac relay on. we checked all the inputs the ac presure switch is working properly and the pcm is getting the signal, the climate control head sends the ac request ( on/off but...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Cadillac DeVille 4.6L Electronic VIN: 1GEEH90Y2W
well we finally got this caddy done after further inspection of the a/c control's we found that the control on the steering wheel temp button had some coffee and or soda inside the switch causing the button to stick after 30 sce or so the control on the ipc wo...
1993 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality VIN: 2GCEK19K2P
Let me start by thanking all the people for their replies. The clue to this one was the block learn being down at 90. The vehicle was getting fuel that the computer was not able to control. We removed the TBI unit and disassembled it. We found one of the injec...
1998 Chevrolet K2500 Cheyenne 6.5L Excessive Emissions, Hesitation, MIL Lamp on VIN: S6WE114333
I received 4 replies, Gerry was to check egr for holding vacum, which I had checked. Phill said to check and make sure the hoses had not been switched on a previous repair job to the solenoids, they were good. Mac said to just change out thoughs solenoids [hig... Trouble codes: P0401, P0404, P0236.
1998 Chevrolet K1500 Cheyenne 5.7L passlock tds
After talking with the truck's owner, I finally agreed to let him have it back even though I wasn't convinced that it was fixed. He called me a few days ago to tell me that the truck would not start after he replaced the battery. I walked him through the proce...
1999 Chevrolet Tracker 2.0L Compressor VIN: 2CNBJ13C2X
Well everybody was on the right track here, as I thought it was a blockage but wasnt doing what I thought. I kept going back and flushing the system and just knew it was clean. If ever there was an over flush I did it. Then I would put it all back and pressure...
1999 Chevrolet Silverado 1500 5.3L Hesitation, MIL Lamp on, no power VIN: 2GCEC19T7X
first thanx for all the replies. Customer could not leave vehicle any longer so I have not been able to pin point the problem. I was going to try a new pcm but customer would not ok work. I cked every thing from maf,tps,map,fuel trim was ok. cked all grounds, ... Trouble codes: P0121.
2000 Chevrolet C2500 5.7L Cooling Systems VIN: 1GCEC19T21
Hello everyone sorry about closing this one so late but have been busy. On this engine we replased the water pump because had no flow to heater core, but after replase the water pump still had no flow. After all the work that had been done i knew it had to be ...
2003 Chevrolet Tahoe LT 5.3L MIL Lamp on VIN: 1GNEC13Z53
one of the responses suggested to check alternator diode, unfortunally, costumer took truck and has not come back for furter diagnostics.thank you for all your replies. Trouble codes: P0341 (Camshaft position sensor performance), P0343 (Camshaft position sensor circuit high voltage).
1997 GMC Yukon SL 5.7L Steering VIN: 3GKEK18R3V
Group, No surprises here, once again I have replaced EVO sensor and bearing and system works as designed. I determined that It was cheaper to repair this than buy a new truck as on responce reccomended. I did however order the upper column with the drag join...
2002 GMC Envoy SLE 4.2L Keyless Entry VIN: 1GKDS13S82
Thank you for your help. I was able to check all modules with a class 2 data check, using the tech 2, as Eric and Jay suggested. I found a u1000 code in other modules, but I could not communicate with the liftgate module. The liftgate module is what controls k...
1998 Oldsmobile Silhouette Premiere 3.4L Misfire VIN: 1GHDX03E3W
Well, we just escaped Hurricane Rita and now have power again. Thanks for all the help. Several replies hit this one on the head. We sent the van back to the engine shop that installed the motor, upon our reccomendation, they pulled the lower intake and it was... Trouble codes: 0300 (Random misfire).
1999 Oldsmobile Intrigue GX 3.5L cylinder head or camshaft VIN: 1G3WH52H6X
Hi there .I got some good info from 5 techs but the customer opted to keep driving the car for now as it is with the noise .It is used for a courier service and has not gotten any worse and he said he'll just drive it until it quits .Thanks guys for the good i...
2001 Pontiac Bonneville SLE 3.8L not sure VIN: 1G2HY54K91
I have had 11 responses to this post. The customer has taken the vehicle to other shops to find a cure for the problem. I have made several attempts to get the customer back into the shop with no avail. I want to thank everyone who took time out of their busy ...
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