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Professional Automotive Repair Technical Discussions for April 2, 2013 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1967 Chevrolet Bel Air 4.6L Mechanical I'm reliving my high school years! I have a 1967 bel air that I swapped a 700r4 into. Its not shifting quite correctly. A buddy of mine built the trans without lockup convertor, no-yo-yo shift kits and corvette servo. My shifts seem kinda low, 1-2 16mph, 2-3 2... |
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| 1997 Chevrolet Astro 4.3L No Start, Cuts out, Stall, Misfire VIN: 1GBEL19W1V This van came in with a running bad and no-start sometimes complaint. Well went out and started right up and ran fine. So I hooked up scanner to see what if anything wrong. When I was looking at data the van hic-uped just realy fast and when I looked down at s... |
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| 2003 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHK29143 this is my first post so please bear with me. customer just bought truck from a private party and started to have long crank issues, i replaced the fuel filter and noticed prime pump did not work well so i replaced all the seals and now primes system well. sti... |
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| 1998 GMC C6500 Topkick C6H042 7.0L light and alarm VIN: 1GDJ6H1C0W auxillary brake light is on dash and has alarm sounding. brakes work fine, need flow chart for caterpiller diesel motor found one for gas engine but not same please help |
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| 2008 Pontiac Grand Prix 3.8L Stall VIN: 2G2WP55218 This vehicle came in with the symptom stalled and CEL on. Test drove and vehicle runs fine CEL is off.Pulled codes and got P0335 carnkshaft sensor a fault. I monitored the crankshaft position sensor circuits as per pinpoint test and found instead of counts goi... Trouble codes: P0335 |
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| 2000 Saturn SL2 1.9L no 1st gear, no 3rd gear VIN: 1G8ZK5271Y We replaced customers transmission with used unit. Had similar problems before the replacement. After transmission was installed it ran OK for about a week except for the occasional harsh 1-2 shift. Now it slams into reverse harsh plus it will neutral out in b... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1973 Cadillac Fleetwood 7.7L alternator VIN: 6B69R3B101 first off, let me apologize for taking so long to close this. i was waiting to hear back from the customer, which took awhile, as he went away for a few days. i checkde, and rechecked the connections. i had very clean connections from all grounds, and nearl... |
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| 2004 Cadillac SRX 4.6L Misfire VIN: 1GYDE63A14 sorry i have to close this request.we were going to put a used pcm in it and i have yet to recieve one.the car is still at the shop and i will update again when the car is fixed.the replies were very helpful fuses are seperate for the odd and even coils, also ... Trouble codes: P2301, P0351 (Ign coil a primary circ prob), P2319 (Ign coil 7 cont circ hi), P0357 (Ign coil g primary circ prob), P0353 (Ign coil c primary circ prob), P2313. |
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| 2006 Cadillac CTS 3.6L Theft light VIN: 1G6DP57746 Hey guys thanks to everybody that reply , some of you hit right at the nail, i end up replacing pcm reflashed it and now everything is working normal!! Trouble codes: U1300 (Class 2 voltage high), P1629 (Theft fuel enable). |
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| 2007 Chevrolet Trailblazer LT 4.2L Differential VIN: 1GNDT13SX7 I should have drained fluid out of bottom drain plug after receiveing poor instruction's from identifix i went and drained out all fluid and chucks of metal came out installed new transfer case and reprogramed TCCM at dealer all is good |
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| 2007 Chevrolet Aveo LS 1.6L Misfire VIN: KL1TD65657 Well it looks like no one wants to spend more time and money on this car. So thank you for all the suggestions. Customer is driving the car and just loves it and says it runs just perfect except for the flashing engine light. Sorry i couldn't provide a fix but... Trouble codes: P0300 (Random cylinder misfire), P0301 (Cyl 1 misfire detected), P0304 (Cyl 4 misfire detected). |
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| 2000 GMC K3500 Sierra SLT 5.7L ABS & Speedometer VIN: 1GTHK34R5Y I removed the EBCM for repair/rebuild due to no reman available. New was very expensive and "no longer available". I located a rebuilder on the web and sent it for repair. They were unable to rebuild it and were kind enough to locate a used one and send it to ... |
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| 1999 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE12T5X wow. great responses. replaced the coil housing and she fired up. looks like everybody but me has fixed one of these b4. i had given the old housing a good looking over but the responses were so in favor of this being my failed component i knew i had missed it... Trouble codes: P0300, P1626. |
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| 2000 Pontiac Grand Am SE 2.4L cooling system VIN: 1G2NF52T6Y Tadd and Bill, ya'll nailed it. After flushing and back flushing the heater core a couple of times, hooking everything back up and running for most of the day, all is perfect. Thanks to all who took the time to read and respond. Iatn is one of the best tool... |
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| 2005 Saturn Vue 2.2L No Start, MIL Lamp on VIN: 5GZCZ43D55 Thank you to all who offered help on this vehicle. Finally was able to spend time on this vehicle. The culprit turned out to be lack of proper voltage to ECM via battery positive voltage. After testing voltage on C1 ECM connector, found that battery positiv... Trouble codes: U2105. |
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