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Professional Automotive Repair Technical Discussions for March 21, 2008 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1993 Cadillac DeVille 4.9L Excessive Emissions, Misfire VIN: 1G6CD53B8P we can't get this cadillac to run right it won't go into closed loop and cylinder #3 and # 8 have miss fires due to fuel (too much) not too sure where to go next on this. |
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| 2002 Chevrolet Cavalier LS Sport 2.4L engine VIN: 1G1JH12T72 hi all hope you can help we are bald from pulling our hair out. this car came in with a leaking head gasket it was running fine. we removed the head and sent it out for repairs it was presser checked and the valve were reground. the head was resurfaced. we too... |
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| 2003 Chevrolet Silverado 1500 5.3L master cyl VIN: 1GCEK19T13 First I must tell you this truck is a repairable. Have no idea if the brakes were like this before the accident or maybe it was why it was in an accident. The truck was hit in the right front. The problem is it has a low brake pedal and does not want to stop w... |
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| 2003 Chevrolet Suburban 1500 LS 5.3L A/C tentioner VIN: 3GNEC16T83 a/c is cold and pressures look good and No cycling issues the problem we have on this unit is that the tentioner will vibrate/rattle when engine is reved up above 2500 rpm in gear or in neutral it actually ratchets to the stop causeing the noise. what do I do ... |
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| 1994 Geo Metro 1.0L Exhaust Valves VIN: 2C1MR2465R Dear Techs, I have this geo that don't like going away. Customer first had towed in at 172,725 miles for no start. Found timing belt broken. Replaced timing belt, ended up pulling head because cylinder #2 exhaust valve was bent. Everything went fine until Octo... |
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| 1995 Geo Tracker LSi 1.6L Hesitation VIN: 2CNBJ1864S this car came in with no power, hesitation. started with tune up, now the power is back but hesitation seems worse heres what happens if i feather the throttle it will rev ,if i dump the throttle fast it falls allover its self seems like it only runs on one cy... |
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| 2005 GMC Yukon SLE 5.3L Steering VIN: 1GKEK13T95 CO455 - C0550 CODES WERE IN HISTORY; CUSTOMER COMPLAINT WAS "several lights like ABS and ESC were flashing a couple days ago, then quit. thought I should get it checked out". "SERVICE STABILITY" IS ON INFORMATION CENTER DISPLAY. CLEARED CODES AND TEST DROVE, C... |
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| 1988 Pontiac Fiero Sport 2.8L No Start VIN: 1G2PE1193J i ran the check off shopkey for no start. check spark at 2 wires none. installed noid light and no light during crank. go to chart a-3 ign on check for power at both terminals on injectors yes. disconect 4 way conn at module touch harness con. at terminal 430 ... |
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| 1994 Pontiac Bonneville SE 3.8L battery VIN: 1G2HXS224P Battery intermitant discharge to 7 volts. You can drive the vehicle between 1-3 weeks at a time,then at any time when the vehicle sits for 6-10 hours the battery is drained. No interior/exterior lights and obviouly no crank on engine. Very hard diagnosis,knowi... |
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| 1996 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE552T7 Hi Folks: This car was towed to me after another garage could not figure it out. It was driven to that garage. I was told by the owner it ran very poorly. He said it skipped and had no power. While at the other shop, the condition deteriated and now it will no... Trouble codes: P0300 (interm misfire) |
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| 1993 Saturn SL2 1.9L Excessive Emissions VIN: 1G8ZJ5577P This car has me stumped. The O2 sensor pattern at 700 rpm idle is a cycling .3 to .8 volt pattern of 140 ms from bottom to bottom which I suspect to be a lean injector or two. The pattern at 15 mph is a dirty signal but is switching from rich to lean. At 25 mp... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2000 Cadillac DeVille 4.6L controls VIN: 1G6KD54Y7Y Thanks to all who replied.I replaced the temp. actuater and that took care of the problem. |
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| 1995 Chevrolet Caprice Classic 5.7L No Start VIN: 1G1BL52W4S well, this one is fixed. turns out that when it would'nt start, we also had no injector pulse, or fuel! power to everything-NO GROUND! volt drop test revealed bad grounds,when it would run, it ran until it got warm enough for the connection to expand enough t... Trouble codes: 16 (lo res pulse circut). |
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| 2005 Chevrolet Silverado 2500 HD 6.6L No power when cold VIN: 1GCHK29285 This is an intermittant problem and have not yet confirmed a fix. Thanks for responding with the emails though. I am changing the Turbo Vane solinoid and I think that will fix the problem. Again, Thanks. James Trouble codes: P0045 (Turbocharger Vane Position Control Solenoid Control Circuit). |
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| 1997 GMC K2500 Suburban 7.4L Drivetrain VIN: 3GKGK26J2T Thanks To All Who Replied, Sent Truck Back To Transmission Shop & As Most Of You Replied They Found Broken Snap Ring At Transfer Case Output Shaft. Don't Know How This Occured On A "Rebuilt" Transfer Case, But They Repaired It. Truck Has Been Gone For A Week N... |
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| 1998 GMC K3500 Sierra SL 7.4L Poor Idle Quality, Surge, Stall, Misfire VIN: 1GTHK33J1W recieved three replies on this one-one suggested leaking fuel injectors-however the fuel pressure on this did'nt show any sign of leakdown,one suggested worn dist.bushing which i had already chkd when i replaced rotor,the last suggested unplugging timing conne... |
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| 2003 GMC Sierra 1500 Denali 6.0L Misfire, MIL Lamp on VIN: 2GTFK69U53 cked wiring at throttle body no problem found cleaned throttle body road tested 125 miles no ck lite but... thanks for the ideas mark Trouble codes: P0120, P2135. |
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| 1994 Oldsmobile Cutlass Supreme S 3.4L Unknown VIN: 1G3WH55XXR THANKS TO ROBERT FROM NORTH CAROLINA AND CHRIS FROM MISSOURI. BOTH SAID TO CHECK THE VACUUM BOOSTER HOSE WHERE IT CONNECTS AT THE BACK OF THE INTAKE. SURE ENOUGH IT WAS SOFT, SWOLLEN, AND OIL SOAKED. REPLACING THIS HOSE MADE THE BRAKING 10 TIMES BETTER. HO... |
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| 1998 Oldsmobile Aurora 4.0L cooling system VIN: 1G3GR62C5W Head gasket is bad. I have the combustion gasses as mentioned, and the coolant shows up in the oil if it is run hard for an extended period of time. Customer neglected to tell me that he was losing two quarts of oil per month and only driving about 1500 miles ... |
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| 1985 Pontiac Fiero GT 2.8L MIL Lamp on VIN: 1G2PG3791F The nightmare is over. A search of all the local junk yards produced no '85 Fiero's for a donor ECM. The ECM is a one model-year only. I next was returning to ground zero and start completely over. I removed the PROM to see if the ECM would output a code ... |
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| 2004 Pontiac GTO 5.7L stereo VIN: 6G2VX12G24 I learned that the only way to get this radio to work is with the tech2. the radio needs to be programmed to work with the vehicle it is being installed into. thank you for the 3 responses I recieved it is appreciated. Thank You Jim [...] |
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