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Professional Automotive Repair Technical Discussions for July 26, 2013 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2001 Cadillac Seville STS 4.6L MIL Lamp on VIN: 1G6KY54991 Applied scan tool and operated AIR pump while monitoring O2 sensor data. Heard AIR pump turn on and saw Bnk1 Sensor1 O2 drop too 30 mV, other O2 sensors dropped to or around 0 mV. According to diagnostic chart system is working OK as long as B1S1 O2 drops belo... Trouble codes: P1415 (AIR system bank 1), P0420 (cat efficiency bank 1) |
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| 2000 Chevrolet Astro 4.3L No Start, Cuts out, Stall, Misfire VIN: 1GNEL19W5Y Hi group this van came in as a no start but it did start when it came to my shop i checked fuel pressure and it dropped to aprox 42 before it died. I put in a new fuel pump and filter it ran good for a while then died on the road when i disconnect the tps it s... |
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| 2000 Chevrolet Astro 4.3L No Start VIN: 1GNDM19W8Y Vehicle has good fuel, spark, injector pulse. Found wet plugs and replaced. Tested TPS, pass lock, coolant temp sensor, fuel pressure regulator, injectors/poppets, check valve (had a test injection system from a conversion & tried it). Took fuel sample and fou... |
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| 1995 Pontiac Bonneville SE 3.8L traction off light VIN: 1G2HZ52K6S I have a 95 pontiac sse with 3.8 v6, the mileage is actual, the traction off light is on as well as the hvac control which is electronic has the temp light flashing, pulled codes with tech 2 and have code 38 and code 76, no other codes, I have replaced the ebt... |
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| 1997 Pontiac Grand Am GT 3.1L Security (anti theft) VIN: 1G2NW12MXV Hello all, thanks in advance. Have this grand am that came in a week ago, start stall with security light. I was able to do the relearn fired up just fine, start three or four more times then security tripped again. This time relearn wouldn't work, light flash... |
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| 1997 Saturn SW2 1.9L A/c VIN: 1G8ZK8275V Vehicle a/c does not blow cool air , so we service it but still doest not blow cool air, low side is 30 psi and high side is 100 psi, both compressor and fan comes on and both lines remain warm, any recommendation |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2004 Cadillac SRX 4.6L Mechanical VIN: 1GYEE63A74 Labor was 24.3 hrs said to remove Cradle Transfer case and driveshafts then remove engine and trans together. Was hoping to remove engine from top. Looked closely dropped crade and engine together raised cab and chassis removed engine... Almost out and only ... |
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| 2007 Cadillac CTS 3.6L Key-Ignition VIN: 1G6DP57707 Thanks for all the help. Pulled all wireing were car was wrecked all looked fine,readjusted shifter linkage. All data on scanner was correct for what gear trans was in.I am sure when car was hit gave PCM good jolt. Replaced PCM and all is fine for now Thanks a... |
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| 2000 Chevrolet Impala LS 3.8L Poor Idle Quality, MIL Lamp on VIN: 2G1WH55K4Y Coil for cylinders 6 and 3 was replaced. It fired but not good enough and the new intake fixed the high pressure in the coolant. thanks for the replies and keep wrenchin. Trouble codes: P0306 (Cyl. 6 misfire). |
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| 2003 Chevrolet Silverado 1500 5.3L compressor VIN: 2GCEK19T33 Thanks for the help. After further research into the wiring found the front harness had been replaced. This truck should have two sensor and the one replaced was for computer. Found ac temp wires omitted. Ran new wires pigtail and temp sensor. Ac works great a... |
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| 2002 GMC Sierra 2500 6.0L Unknown special tanks to Denny for explanation and to test to run. Also like to thank you Wilfrido,Perly and Ken wasn't able to run the test Denny suggested, although I wanted to try it. Did drop the pan and nothing was found concerning GPS sent Another re-man trams. ... |
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| 2008 GMC Sierra 2500 HD WT 6.0L SDM Communication VIN: 1GTHK29K98 Handed this one off to customer and advised him to go to dealership...500 miles away. Last effort was checking continuity on comm bus, isolating all but SDM module. Even with every module off bus, still no comm. I believe vehicle may have been at another sho... |
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| 1998 Pontiac Sunfire GT 2.2L Hesitation, Misfire VIN: 4G2JB3247W NOT 100% SURE ON THIS ONE BUT I TOLD THE CUSTOMER I WANTED TO START WITH THE CHEAPER ROUTE AND WORK OUR WAY UP. I ENDED UP PUTTING BG FUEL SYSTEM CLEANER IN THE TANK AND TOLD THE CUSTOMER TO RUN IT TO CLOSE TO AN EMPTY TANK BEFORE FILLING BACK UP AND CALL ME B... |
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| 2001 Saturn L200 2.2L dash gauges,security light,daytime lights VIN: 1G8JU52F21 Well, the general opinion is that the BCM need to be replaced. The part and the dealer reflash is too expensive for the customer. I can buy a used one at a salvage yard for $40 but I am afraid to try that. So, for now at least, it is unrepaired. Thanks to all ... |
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