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Professional Automotive Repair Technical Discussions for October 16, 2009 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2000 Cadillac DeVille DTS 4.6L heater VIN: 1G6KF5792Y car came in with no heat at all.had dealer run tech2 on system since we couldnt get in it. was told every thing was good in dash control an heater box. rec.do heater core. we did now we get luke warm air 90 deg.but it takes time to even build that much if you ... |
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| 2004 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KF57954 I have a 04 cadillac custemer complained his mil light is on. I checked fuel trims long term was at 18 to 21. I put a fuel pump in it because fuel pressure is supost to be 41/47. light stayed out for an hour or so fuel pressure is 35 lbs still. I was leaning o... Trouble codes: P0171, P0174 |
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| 1992 Chevrolet Caprice 5.7L Cuts out, Stall VIN: 1G1BL8375N only shuts off when put into gear. its will run all day in idle. i got it timed but still same issue. ive had people say it could be a possible egr so i threw a part at it and problem still persists. i have others say that the torque converter could be stickin... |
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| 1998 Chevrolet K1500 Silverado 5.7L Unknown VIN: 1GCEK19R1X hi everyone iv got a 1998 chev silverado customer started getting realy bad gas milage and the truck started misfireing bad at about 3000 rpm ( we chnged plugs,wires,fule filter, ) stil runs like crap pute scaner on it and came up with codes i cant figure out ... |
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| 2000 Chevrolet Venture 3.4L brake lamps VIN: 1GNDX03E9Y have this problem with brake lamps always on after unplunging brake lamps switch cruise control switch and couple other switches and they still stay on. can anyone tell me what i could look for? i know it is a short in the wiring somewhere. any hints on where? |
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| 2001 Chevrolet Suburban 1500 LS 5.3L MIL Lamp on VIN: 3GNFK16T21 Hi everyone. I don't know about you guys but I seem to be getting my share of these evap problems. It seems as though I'm doing battle with at least two of these a week lately. I am hoping someone can shed some light on this one for me. I have trouble code P04... Trouble codes: P0446 (evap leak) |
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| 2003 Chevrolet Malibu 3.1L Cuts out, Stall VIN: 1G1NE52J73 this vehicle came in with 2 problems and have not yet decided if they are relate or not! when you are sitting in the car and turn the wheel left to right the car shuts off. If you bring the rpm up and turn the wheel left to right vehicle will run really crappy... |
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| 2004 Chevrolet Impala 3.8L MIL Lamp on VIN: 2G4WB52K0W Third time back with this vehicle. Track lite comes on, brake light comes on, ABS light comes on. Most of the time, the traction control light comes on first. It usually happens when vehicle first started. Afterwards, brake and abs light come on. U1040 first, ... Trouble codes: U1040 (EBCM Communication Problem) |
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| 2006 Chevrolet Tahoe 5.3L Transfer Case VIN: 1GNEK13226 This transfer case suddenly refuses to propel the vehicle in 2wd mode. The driver got in it this morning and shifts the tranny to drive... nothing! Engine just free spins. If i shift unit to 4hi or AUTO the vehicle will move. From there, if i select 2wd mode, ... |
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| 2006 Chevrolet Cobalt LS 2.2L no crank VIN: 4PRUS16204 PREVIOUS SHOP INSTALLED AMP and now vehicle will not crank. You can tern the key on and cross over the starter and it will start and run fine.Now it is charging 15.6 volts when running.Had no problems until shop tried to install amp.All of the wiring they inst... |
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| 2001 GMC Sierra 2500 HD SL 6.6L 2nd to 1st gear downshift VIN: 1GTHK29191 When the truck slows down to almost a complete stop or turns a corner and shifts from 2nd to 1st, it neutrals (flares/slips) and bangs into low gear. The rest of the gears are fine. Any suggestions?? Thanks, Chuck |
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| 2002 Pontiac Sunfire SE 2.2L 1st to 2nd gear shift VIN: 1G2JB52F42 Only shudders after you drive on highway for about 5min or so above 70mph (engine @ normal opperating temp), and you come to a stop wait for about 3 to 5 seconds then you accelerate normal or aggresive doesnt make a difference it shudder/slips and occationaly ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1996 Chevrolet Blazer 4.3L Poor Idle Quality, Stall, MIL Lamp on VIN: 1GNCT18W1T Hi everyone. Customer did not fixed since he just purchased it at a buy here pay here. They put him in another vehicle. The most common reply was the fuel pressure regulator leaking. I always had these come in with rich code. I learned from the replies that ... Trouble codes: P0107. |
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| 2001 Chevrolet Silverado 3500 6.6L indicator light VIN: 1GCJK33141 THANKS FOR ALL WHO REPLIED, ENDED UP FINDING A BROKEN WIRE ON ACTUATOR ON THE FRONT AXLE, REPAIRED BROKEN WIRE AND ALL IS FINE. THANK YOU |
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| 2001 Chevrolet Malibu 3.1L steering axis inclination spec VIN: 1G1ND52J81 thanks for all the help on this. the spec is 12.9. the car was hit on the left side and we had a bent strutt on the right and it was very hard to see. those of you who wrote me not to worry about sai because you can not change it or just try to match it, well ... |
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| 2002 Chevrolet Astro 4.3L Cuts out, Misfire, MIL Lamp on VIN: 1GNEL19X62 Indir hit the nail on the head, the ckp sensor was breaking up at high rpm. I changed the sensor, problem solved , but not after i had to relaern the ckp variation 4 times, i kept getting random misfire until it learned the variation. Thanks to all that helpe... Trouble codes: P0335. |
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| 2004 Chevrolet Tahoe LS 5.3L No Start, Cuts out, Stall VIN: 1GNEK13Z34 Finally fixed. Thank you to all replies They were all very helpful. The path i chose to follow was to first try and get the scanner to communicate. So I jumped on all data and followed the diagnostic chart on the information bus circuit. after tearing the whol... |
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| 2005 Chevrolet Silverado 2500 HD 6.0L steering column VIN: 1GBHC24U45 LIKE WE SAID BEFORE.WE HAD CHANGED THE LOWER STEERING SHAFT A FEW MONTHS AGO.WE CHECKED IT ANYWAY,AND IT WAS OK.WE FOUND A LOT OF PLAY AT THE END OF THE STEERING COLUMN.WE CHANGED THE COLUMN AND THE NOISE IS GONE. THANKS FOR ALL THE HELP BRIAN |
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| 2006 Chevrolet Cobalt SS 2.0L clutch VIN: 1G1AP14P66 Sorry it took so long to close.I wanted to wait a week after we released vehicle to check with customer on performance. Had several good replys. What we ended up doing is removing transaxle and replacing slave cylinder with OE. We checked clutch and pressure p... |
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| 1995 Oldsmobile 88 Royale 3.8L Pressure Modulator Valve VIN: 1G3HN52K4S Many thanks to Don for providing a link to a schematic of the brake lines and their routing.Vehicle has a good solid pedal and ABS works fine.Once again another rusted through vehicle back on the road,LOL.One other suggestion from Thomas was to actuate each mo... |
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| 1998 Oldsmobile Aurora 4.0L Cuts out, Stall VIN: 1G3GR62C3W As we sometimes do, I may have made this more complicated then it was. I knew the module was shutting down, I just couldn't figure out why. After looking at the secondary ignition I noticed a strange pattern on #6 and #7 cylinders. The plugs looked good, so... Trouble codes: P1599 (Engine Stall or Near Stall Detected). |
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| 2000 Saturn L200 3.0L bcm VIN: 1G8JW52RXY It turns out that the draw would intermittently reach close to 3 Amps at times and drain the battery. The culprit was the alternator. It just didn't rear it's head very often. When it did, I was able to narrow it down to the alternator. All is well. Thanks to ... |
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