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Professional Automotive Repair Technical Discussions for July 8, 2015 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1999 Cadillac Seville STS 4.6L idles at 2000rpm VIN: 1G6KY5499X supposedly when the pcm is replaced car runs fine for a couple days then high idle starts happening. we blocked off the air intake and the engine stalled so no vac leaks present. We can't get the IAC to respond and it is stuck at 157 never moves. tps is at .73... Trouble codes: P0601 |
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| 1997 GMC C1500 Sierra SL 5.7L Cuts out VIN: 2GTEC19R9V Need help! Thanks for taking time to read. This truck is a good friends and I cant seem to get to the bottom of the issue.. He tells me that it stalls/ dies on him VERY intermittent. say once a month. he says when it happens its like you turn the key off. I've... |
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| 2003 GMC Sierra 2500 HD SLE 6.6L transmission VIN: 1GTHK23173 Truck came in for a trans service, Both filters replaced, Dex VI fluid. After service we drove truck and it shuddered when shifting and set a p0747 PC sol. Came back to the shop and recheck fluid level-good, clear code and truck ran fine for 5 mile drive. Cust... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2004 Cadillac CTS 3.6L power loss intermitt VIN: 1G6DM57774 Thanks to everyone for the helpful suggestions. Due to the overall condition of the car the customer opted to remove the ABS fuse from the underhood fuse/power distr box. Removing the fuse results in some warning indicators illuminating but it clears us the bo... Trouble codes: P1793 (wheel speed issue), C0870 (device voltage), U1000 (class 2 comm), U1016 (lost comm with ECM). |
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| 1978 Chevrolet Corvette 5.7L Mechanical after four master cly. I got a good one. couldn't get fluid out of back port while bench bleeding. still took a long time on car. used power bleeder,vaccum bleeder and then the old foot. now has great pedel thanks |
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| 1993 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality, Surge VIN: 2GCEK19K2P Thanks to everyone who replied, I pulled the TBI off and cleaned the bore, remove and clean IAC, replace gasket and seems to run fine, Normally I could find a vac leak on these with carb cleaner but never found it on this one. Thanks again. |
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| 2004 Chevrolet Express 3500 6.0L Pcm, ckp VIN: 5B4KP42U44 AFTER ALL SAID AND DONE, ENDED UP PUTTING A NEW WIRING HARNESS IN IT, FIXED IT ALONG WITH A COUPLE OTHER ISSUES. I REALLY APPRECIATE ALL THE HELP, THE TIPS YOU GUYS GAVE ME WERE ALL HELP TO DETERMAN THE ULTIMATE FIX,,, THANKS gUYS! |
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| 2005 Chevrolet Trailblazer LS 4.2L charging light on VIN: 1GNDT13S35 thanks for all the help , I had tested every thing out on the alternator and even installed brand new alternator before posting, same with install a different pcm. I believe the problem is between the pcm and the dash unit, customer did not want to go any fart... |
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