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Professional Automotive Repair Technical Discussions for February 19, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1986 Buick Riviera T-Type 3.8L No Start, Stall VIN: 1G4EZ57B6G car starts an run fine when cold, when gets to normal operating temp and you turn the engine off for about 15 minuts it crancks over startup and dies, if you try to cranck it again won't start till is cool down for about 30 minuts the other way to start the en... |
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| 1993 Buick LeSabre Custom 3.8L No Start VIN: 1G4HP53L8P Hi Everybody, I have this 93 LeSabre that once or twice a month will not start.It cranks over good but by the time the tow truck brings it here it starts right up.The fuel pressure is good,I have current ramped the fuel pump,coils,injectors while letting it ru... |
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| 1993 Buick Park Avenue Ultra 3.8L Security System VIN: 1G4CU5310P I think the alarm and the key system are 2 different systems? Two questions ... one what is the problem and two is there a scan tool to check the security feature. Thanks for any help you can give me on this problem. |
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| 1996 Cadillac DeVille 4.6L instrument cluster VIN: 1G6KD52Y8Y Good Morning, This Deville has had this problem for 6 months. It will occur intermittently mostly after 30 minutes of driving. Instrument cluster goes out, climate control becomes inop., dimmers become inop., may flicker at times. The symptom may disappear fo... |
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| 1992 Chevrolet Astro CL 4.3L Excessive Emissions VIN: 1GNDM19ZXN got this astrovan in the shop failing emissions test for nox.isolated problem at egr system.egr has vacuum signal at all times.however the egr itself has a bad diaphragm so the car still idles fine.so i know i need a new egr valve but have to solve the vacuum ... |
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| 1995 Chevrolet Caprice Classic 5.7L Hesitation VIN: 1G1BL52P9S Hello All, I have inherited this car from another tech. It hesitates badly on hard accelleration. I'm not sure how long it's been like this. It's a city vehicle and the driver might just not have mentioned it before now. It came in the shop for a low battery... |
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| 1996 Chevrolet Monte Carlo LS 3.1L Misfire, MIL Lamp on VIN: 2G1WW12MOT This car has been back to us 3 times with a P0300 misfire. The mis is always on cylinder #4. Originally I found two injectors out of specs, all six were replaced. When it came back the second time I found that the fuel pressure regulator was leaking. When I fo... Trouble codes: P0300 |
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| 1998 Chevrolet K1500 Suburban LS 5.7L MIL Lamp on VIN: 3GNFK16R2W Need some insight to this problem. Scan readings of 02 b1s2 shows 70mv steady and 02 b2s2 about 720mv steady on fully warmed up system. Both waveforms have some slight activity as it should in respect to the front 02 waveforms. Cranking test of exhaust shows 9... Trouble codes: P0420 |
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| 2000 Chevrolet K3500 5.7L Parking Lights VIN: 1GCHK33J1Y Good Evening Everyone We just finished the repairs on the front of this vechile & couldn't get the parking lites to work. None of the wires appear to have been damaged,all the fuses are good.Found nothing in the archives. What I did find was a burnt wire on t... |
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| 2001 Chevrolet Impala 3.4L cooling fans VIN: 2G1WF52E61 this is for all you gm techs. please tell me what i am over looking, here it is. vehicle came in with overheating problem. customer has been to another shop twice and still same problem, they didn't repair the overheating. some hoses and gaskets were replaced ... |
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| 1997 GMC K1500 Sierra SL 5.7L Interior lights,Door Locks,Rear heater On VIN: IGKFKI6R4V Hi Everybody, I have not a chance to really look into this problem yet ,What i do know is the Interior light stays on (removed Fuse)#3 so interior light would go out.Heater in the rear stays on and the door locks going down the road stated locking by themeselv... |
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| 1991 Oldsmobile 98 Regency Elite 3.8L burned up clock spring VIN: 1G3CW53L5M Car came in initially because clock spring would grab when cornering. When it was disassembled the clock spring was just totally burned up and the back cover was right off. We replaced spring and the car went down the road for about a week until she came back ... |
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| 1995 Pontiac Grand Prix SE 3.1L oil pump VIN: 162WJ12M2S Vehicle drove in.Have checked electrics,trans. cooler check ball & tried another filter seal. |
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| 1998 Pontiac Trans Sport Montana 3.4L Misfire VIN: 1GMDU03E0W lean Misfire with negative fuel trim #s complaint is mis & jerk at high gear slight load. Ignition wires had resistance on at least 2 wires (rust on towers) sold customer a tune up of (Plugs ,wires air & fuel filter & motorvac injector cleaning) scoped wires &... |
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| 1999 Pontiac Grand Am SE 2.4L whine VIN: 1G2NE52T6X customer returned with engine noise coming through speakers no radio on sounds like bad ground but can't find a bad ground replaced altenator and noise still there has anyone ran across this before thanks in advance |
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| 2004 Pontiac VIBE 1.8L Poor Idle Quality VIN: 5Y2SL62834 Hello all Pontiac techs...we have this 04 Vibe that we're replaceing the intake manifold. It was in a wreck, and now is sucking air. Mitchell's does not go that new, and we need the torque spec for the intake, and the throttle body. Any help would be much appr... |
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| 1992 Saturn SL1 1.9L 1-2 shift VIN: 1G8ZH5490N Hi guys, got a problem with the Transmission on this one...customer complained of having "no reverse", which I confirmed. scanned trans. computer and found code 22 (No 2nd Gear) this I also confirmed.Ive gone though the entire diagnostic tree and it leaves me ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1991 Cadillac DeVille 4.9L parking lights VIN: 1GGCD53B1M Thanks for the advice. Turns out when the radio was replaced (by a well meaning DIYS'er) the wires in the dash (behind the radio) were damaged. We replaced the wires from the fuse box (under the hood) to the head light switch and all is well. The lesson here f... |
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| 1978 Chevrolet Malibu 5.0L No Start VIN: XXXXXXXXXX I like to thank all replies,the car has not return as yet,but belevie the problem is gound problem.Thank for all help |
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| 1993 Chevrolet Lumina Euro 3.1L MIL Lamp on, Multiple codes VIN: 2G1WN54T6P Well, after getting the run around from all the dealers I finally found a shop with a GM Tech 2 scanner and had them hook up to the car and program the reman ecm. They almost didn't want to do it because they thought the ecm didn't need programming. Now the ca... Trouble codes: 24 (no vss), 34 (map circuit low), 42 (est circuit problem), 25 (mat too high), 55 (bad ecm adu error), 53 (also codes 45 36 62 61 and others intermittent). |
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| 1994 Chevrolet C1500 5.7L 2-3 3-4 shift VIN: 1GTDC14KXR Pulled trans again and found the 3-4 piston seal blown Sorry to waste everyone's time Thanks for your help |
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| 1996 Chevrolet K2500 Cheyenne 5.7L Mode Doors VIN: 1GCGK24R6T I thank the people who responded so soon. I took the advice of the first response I got. After looking at two parts vehicles I found one that had a second rod going to the vent door. Made the swap and my vent door works great. Not sure if this second rod was o... |
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| 1997 Chevrolet Camaro Z28 5.7L No Start, Hesitation, Stall VIN: 2G1FP22P6V thanks for the input on the opti spark. turns out the water pump leaking on this car is not what caused the opti junk failure. this one came apart inside. i went ahead and changed plugs and wires. thanks for all the help. |
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| 1997 Chevrolet Tahoe LS 5.7L Misfire, bucks VIN: 1GNEK13R7V Well I took a computer from another tahoe to see if it would make a difference. Switched it over and no more problems. Must of been a problem with my original computer. Thanks for the help |
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| 1997 Chevrolet K1500 Suburban 5.7L horn VIN: 3GNFK16R8V Thanks for all the responses. Majority pointed to horn contacts. removed horn pad and re-positioned contacts and all is well. Mike P |
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| 1999 Chevrolet Express 1500 4.3L Speedometer VIN: IGCFG15W2X Thanks everyone for all the replies, replacing the cluster fixed the problem. A few replies I received made referance to the alternator, I tested the alternator to find nothing. There isn't many ways to test the cluster, all you can do is rely on a good signal... |
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| 2000 Chevrolet Impala 3.8L Battery VIN: 2G1WF55K7Y A huge thanks to all who replied. Many helpful tips recieved and i can only hope i can return the favour. Anyways as it turns out, this particular model of dispatch radio requires to be manualy turned off while koeo, seems that someone failed to inform the off... |
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| 2001 Chevrolet Silverado 2500 6.0L transfer case VIN: 1GCHK29U51 Sorry it took so long to get back. We found a mouse nest next to the power distribution box in the engine compartment. Got rid of the varments fixed the wires they chewed on and all is well. Thank you everyone that responded. |
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| 2001 Chevrolet Venture LS 3.4L MIL Lamp on VIN: 1GNDX03E41 Thanks for all the replies. The fix ended up being the Bulletin # 01-06-04-018A -thanks Mark- Sent the van to the local GM dealer and had the PCM recalibrated and the light has been off ever since. Trouble codes: P1404 (EGR performance). |
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| 2002 Chevrolet Silverado 2500 6.0L starter VIN: 1GCHK24U62 well thank u all for the replies most everyone said igntion switch but whatended up being the promblem being the nuatrelsafety switch. we end up with another truck doing the same thing a few days later so we call the dealer and had them do a good will for us c... |
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| 1992 GMC Jimmy SLE 4.3L Hesitation, Misfire VIN: 1GKDT13WXN changed plugs and wires and had a couple bad lifters Trouble codes: 42 (electronic sperk timing EST). |
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| 1996 GMC K1500 Suburban 5.7L Misfire, MIL Lamp on VIN: 1GKFK16R6T I recieved many responses to my request and I am very grateful for the willingness of all of you to be of service! The majority of responses pertained to leaking intake manifold gaskets. GMC no longer uses the 4 center bolts in the intake manifold on the 'R' e... Trouble codes: P0300 (random cylinder misfire freeze frame indicated 5). |
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| 1995 Oldsmobile Cutlass Supreme SL 3.4L Poor Idle Quality VIN: 1G3WH52X4S Thank you to all who replied. Fault WAS a vacumn leak at intake manifold (as most of the replies stated). You all were right on the money! Repaired, and 'down the road'. |
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| 1999 Pontiac Bonneville SE 3.8L Poor Idle Quality, Misfire VIN: 1G2HX52K8X We did find that the Fuel regulator was leaking fuel intermeintantly we did replace this the problem is very intermitant at this point and we are waiting to scheduale a fuel injector cleaning and we will scope the injectors at that time we belive at this point... |
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