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Professional Automotive Repair Technical Discussions for March 8, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1994 Cadillac DeVille Concours 4.6L tcc slip VIN: 1G6KF52Y0R This is my first time asking for some help on here. I have a 1994 Cadillac with a 4T80E transmission and i am getting a P039 code. the transmission has been rebuilt new clutches, steels, and solenoids. It does have the original converter. It shifts great feels... |
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| 1981 Chevrolet Corvette 5.7L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, runs rich VIN: 1G1AY8769B Help! This goes out to all the old GM driveability techs out there. I have done at least 300 of these Quadrajet computer controlled carbs and have never had one do this: It is commanding opposite of what it should. I have 800+ mv on the O2 and the ECM is comma... |
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| 1986 Chevrolet Sprint 1.0L Engine VIN: 1GCMR6859G Our customer brought her car into our shop with the complaint that she could not get her vehicle above 25 MPH. I performed a compression test on the vehicle and those values are listed. We then realized that the choke pull-off was inoperable. We replaced the c... |
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| 1988 Chevrolet S10 2.5L Stall VIN: 1GCBS14E2J This S10 will start and idle for a couple of seconds and then die. It will start right back up and die again. Customer had previously replaced fuel filter, distributor cap & rotor, and ignition module. I checked and cleaned all grounds. Further testing shows t... |
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| 1991 Chevrolet Cavalier RS 2.2L Cuts out VIN: 1G1JC11G7L Code 255 unknown fault found using scanner. I cannot get a data stream on the scanner. Checked pcm power and grounds, checked continuity on serial data circuit, checked for shorts and grounds on serial data circuit. Found a fluctuating voltage on circuit from ... Trouble codes: 255 (Uknown fault) |
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| 1998 Chevrolet Express 3500 6.5L No Start VIN: 1GCHG39F5W the truck would not start . i cranked it it started then shut off the batterys whent dead after trying a few times codes found p1626,p1641,p1654,u1192 i towed it in let sit over night charged the batterys it started up and is running good has done this in the... Trouble codes: P1626, 91641 (see user manul chapter 11), P1654, U1192 |
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| 1998 Chevrolet Malibu 3.1L shift indicator,radio VIN: 1G1ND52M9W When you turn the key on the shift indicator lights up like it should and the radio also but when you start the car they both go out.I;m just woundering if this is the ignition switch causing this problem? I can also start the car without the key in the igniti... |
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| 1998 Chevrolet Blazer 4.3L duct mode/s VIN: 1GNDT13W4W No blower air out floor ducts. Majority of HVAC air is coming out of defrost duct- with some coming out of dash vents when in floor mode. All other discharge modes seem O.K. Doesn't seem like the system is in default defrost mode as when vacuum is lost. All fo... |
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| 1999 Chevrolet Express 3500 7.4L Poor Idle Quality, Misfire VIN: 1GBJG31J7X This van came in running very rough. We replaced cap, rotor, wires, plugs and ICM with OEM parts. The crank signal and MAF signal look good with the Vantage. Fuel pressure is slightly below spec at 50 at idle. Throttle snap the FP goes to 58. Misfire counter s... |
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| 1999 Chevrolet K2500 5.7L brake lights VIN: 1GCGK23R8X have battery voltage on cold side of brake light switch-disconnected stop light switch and turn signal/hazard switchand cruise control module.wiggled wires under dash.disconnected third brake light and rear brake light harness with no success.are there any oth... |
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| 2000 Chevrolet Tahoe 5.3L Hard start VIN: 1GNEC13T1Y Vehicle was not starting on 1st turn of the key but after replacing the fuel pump it starts 1st time when cold.sometimes after it has run for sometime it won't restart,reading the fuel pressure when the key is turned on it only reads 45psi,then if you turn the... |
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| 1999 Geo METRO 1.3L noise VIN: 2C1MR5222X vehicle has a whistleing noise coming from aif filter housing only at idle. no cracks or any damage to housing. any help would be appreciated the noise is coming from within the throttle body thank you |
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| 1996 GMC Jimmy SL 4.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKCS13W8T This is a very random problem. May not happen for days. Freeze frame data is all I have to go on right now. Had lab scope hooked up to cam sensor for 2 hours and did not occur. Checked the archives and found a similar post which indicated a TSB 02-06-04-043 fo... Trouble codes: P0340 (camshaft sensor circuit malfunction), P0175 (fuel system too rich bank 2) |
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| 1992 Oldsmobile 88 Royale LS 3.8L Misfire VIN: 1G3HY53L1N Hello, I have a 92 olds 88, with a random misfire, it is adding extra spark to the 2-5 and 1-4 coils, I can watch it on the scope when it misfires and backfires, you can see it sparking like a double spark. it will show up on the primary side of the coil, but ... |
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| 1997 Oldsmobile Aurora 4.0L oil consumption VIN: 1G3GR62CXV Hello Group, Once again I'm in need of advice. Customer brought this Olds in complaining of using 2 1/2 qts. since last oil change 3200 miles ago. Before this he never had to add between changes. No leaks detected . I plugged off pcv grommet in the valve cover... |
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| 1996 Pontiac Grand Prix SE 3.1L cooling system and crank case VIN: 1G2WJ52M1T Car came in for service when I removed oil plug I got a little bit of clear antifreeze also a milky residue inside of oil cap and vavle covers. When I checked the over flow bottle it had milky oil floating on the antifreeze. Any help with this problem would be... |
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| 1998 Pontiac Sunfire SE 2.4L Daytime Running Lights VIN: 1G2JB52TXW Hello All, I have a Sunfire driving me nuts. The DRL indicator on the dash just flashes when the vehicle is taken out of park and the headlamps are off. The DRL do not illuminate. They will come on if I manually ground the DRL relay at the cluster. I followed... |
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| 1998 Pontiac Grand Prix GTP 3.8L Misfire, MIL Lamp on VIN: 1G2WP5217W Vehicle presents with a misfire noticeable on accel, MIL is flashing rapidly and misfire counter is counting in the thousands on cylinder 3. We first replaced all old {and they did look extremely worn}spark plugs with Ac-Delco double platinum. No change. We re... Trouble codes: P0300 |
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| 2001 Pontiac Grand Am GT 3.4L Fluid fill VIN: 1G2NW12E11 I need info from a tech on the transmission fluid refilling procedure for this transmission that I pulled the pan off of to change the filter. After opening the hood and discovered no fill tube and dipstick for checking the level. I do see and have removed the... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1993 Buick LeSabre Custom 3.8L No Start VIN: 1G4HP53L8P After testing and retesting just about every sensor on the car that could affect it enough to cause a no start I took a stab in the dark and replaced the Ignition Module. Most of the replies I recieved back leaned towards the module or crank sensor.I labscoped... |
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| 1995 Chevrolet S10 LS 2.2L Excessive Emissions, MIL Lamp on VIN: 1GCCS1940S first i would like to thank everyone who replied. most of you agreed that aftermarket cat is the problem . well i let my co-worker know that it needs to be replaced w/oe cat . $559.00 he will eventually do it when he gets the money and i will definetly let eve... Trouble codes: 32 (egr error). |
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| 1997 Chevrolet K2500 Cheyenne 7.4L distributor VIN: 1GCGK29JXV First I want to thank all that replied. Before I posted the problem,I searched the email archives. But did't find what I needed. The service writer wanted 'the why'. I received good replies. The one that fit the best was from Mark [...]. Evidently, there... |
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| 1998 Oldsmobile Cutlass GLS 3.1L Misfire VIN: 1G3NG52MXW THE VEHICLE ALSO ENDED UP HAVEING A PARTIALLY RESTRICTED CONVERTOR. cLEANING THE INJECTORS REPAIRED THE MISFIRE THANKS FOR ALL THE SUGGESTIONS MOST RESPONES WERE AIMED AT THE INJECTORS OTHERS WERE JUST ROOKIE PINCH HITTERS |
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| 1999 Pontiac Grand Am SE 3.4L ABS- Trac Hello techs. Sorry this fix took so long to post, been out with a medical problem. Gettin too old for this. I checked and rechecked all replies to the problem. Everything looked good, power to module etc. The customer called back on another topic and I took th... |
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| 2000 Pontiac Grand Am SE 3.4L Brakes lock down VIN: IG2NF12E6Y Hi All, i got 8 replies + most said 'contaminated brake system +master cylinder cup seals swelled/as well as possibly calipers w/cyl's etc, i did replace the frt. hoses previous to request + flushed system/adjusted stoplite swx. Customer said the next day that... |
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