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Professional Automotive Repair Technical Discussions for April 9, 2016 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2005 Chevrolet Astro 4.3L Misfire I'd like to thank you all in advance! Problem I'm having is a P0300 that keeps returning . Fuel trims were high , found a vacuum leak (fixed) checked misfire data found cyl#2 has a high counts and noticed misfire counter would go from normal to invalid and co... |
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| 2008 Chevrolet Silverado 2500 HD WT 6.0L Electronic VIN: 1GCHK24K88 In tow/haul mode this truck rpms will go up to 5500 rpm before it will shift to the next gear this happend 6 months ago there were no codes and all sensor readings look fine and it is not comanding the next gear and it shift perfect when the tow mode is not se... |
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| 2010 Chevrolet Traverse LT 3.6L No Start, Cuts out, Stall VIN: 1GNLVFED6A The engine and transmission were removed for timing chain repairs. The job was completed and the engine started and ran well. On the first test drive the engine stalled while the door locks cycled and the instrument cluster needles swept. The engine restarted ... Trouble codes: U0100 (Lost comm w/ ecm/pcm EBCM), U0073 |
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| 2011 Chevrolet Traverse LS 3.6L abs VIN: 1GNKVFED4B hello again. i have this traverse that throws a c0252 vses sensor uncorrelated on my tech 2. alldata is pretty vague in the diagnostic procedures. can anyone just give me more info? on this code.also it still throws a c0045 left rear speed sensor circuit with ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1999 Chevrolet Blazer 4.3L Misfire Well, it is fixed and we have an explanation why there was a miss even after replacing lifters and restoring compression! I measured valve lift and they were all essentially the same. Just for fun I was going to measure resistance of the injectors and saw a pi... Trouble codes: P0300. |
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| 2004 Chevrolet Monte Carlo SS 3.8L Inj Pulse VIN: 2G1WZ121X4 FOUND NO PROBLEMS IN HARNESSES 3X SCOPED GOOD . WENT TO MITCHELL AND FOUND A HYPER LINK OF FIXES AND ONE WAS A TECH UNPLUGGED THE MAP SENSOR AND RECOVERED THE INJECTOR PULSE SO I UNPLUGGED THE MAP BARO SENSOR AND I HAD PULSE REPLACED THE SENSOR AND ALL IS WELL |
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| 2002 GMC Sierra 1500 HD SLE 6.0L Misfire, MIL Lamp on VIN: 1GTGK13U32 Just a simple mix up on the running of crank relearn. When starting relearn, Tech2 flashes "Do not push brake pedal", just overlooked when it did say to apply. I've done it many times before, just not in a while. I got it to complete relearn but it didn't help... Trouble codes: P0300 (Multi cylinder misfire), P0174. |
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| 2010 GMC Acadia SLT 3.6L Poor Idle Quality, Stall VIN: 1GKLRMED4A It feels like a loose or broken trigger wheel on Int. bank 1 cam. Removed sensor after watching all cam sensors on 4 channel lab scope. Scope had good wave form but with slight change in time compared to other 3. This is not the common timing chain issue with ... Trouble codes: P0336. |
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| 2002 Pontiac Grand Prix SE 3.1L Hesitation, MIL Lamp on VIN: 1G2WK52J42 Sorry about the late post, very busy. I want to thank all you guys for your help. Especially those that suggested the cat. A catalytic converter fixed this car. Thanks again. Trouble codes: P0300 (Random misfire), P0420 (Catalyst), P0404 (EGR open position performance). |
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