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Professional Automotive Repair Technical Discussions for October 5, 2015 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1999 Chevrolet C1500 Suburban 5.7L Pass Lock System VIN: 3GNEC16R8X I would appreciate any help on this Pass Lock System, I'm have become stuck after several days on this. 1999 Suburban came in with security light on; customer stated light has been on for a couple of years, he bought truck used. Scan test showed code B2947 (se... |
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| 2003 Chevrolet Suburban 2500 LT 6.0L reduced engine power VIN: 3GNGK26U03 Hi all I have another one of the GM throttle body issues. Customer brought vehicle in because of a reduced engine power message on the dash. We found there was a pcm update that matched the problems the vehicle was having. So we had the update preformed and cu... Trouble codes: P0220, P1515, P2135 |
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| 2006 GMC Sierra 1500 SLT 5.3L 2-3 shift VIN: 1GTEK19T96 this is just a typical 3-4 clutch job,the issue is this is a hybrid.we have never worked on one,it looks like there is an coil winding around the front of the converter?how do we safely work on this,what do we need to power down system?any advise? |
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| 2008 Hummer H3 X 3.7L missfire p0300 VIN: 5GTEN13E88 hummer came in with check engine light code p0300 misfire history shows #4 misfiring switch coil still miss on #4 switch plug still miss on #4 did relative compression test with pico and #4 was a little lower then the rest just for numbers did a manual compres... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1992 Chevrolet K2500 Cheyenne 5.7L No Start, Cuts out, Stall, MIL Lamp on VIN: 1GCFK24K5N Im going to go ahead and close this request calling it fixed. Thanks to Ted and Frank (and everyone for that matter). Managed to bypass the esc and thats the best the pickup has ever ran. Once again thank you to everyone for your help. Trouble codes: 42 (est). |
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| 1994 Chevrolet K1500 Cheyenne 5.7L Cruise Control VIN: 1GCEK14K0R THE SPEED BUFFER / DRAC WAS NOT PUTTING OUT A SPEED SINGAL ON PIN C4 BECAUSE THE WIRING HARNESS WAS WIRED TO PIN 5 ??? MOVED RED /WHT WIRE TO PIN C4 THEN HAD SIGNAL TO CRUISE CONTROL MODULE BUT STILL NO CRUISE. REPLACED MODULE WITH ONE FROM 1993 K1500 WORKED F... |
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| 2002 Chevrolet Astro LS 4.3L Hesitation VIN: 1GNEL19X52 seems that the 5V ref signal is common to more components that shown on diagrams ! a regulator inside ECM generates all 5V reference signals, FTPS fixed this one. cut the wire to ref (gray) and signal returned Trouble codes: P1122. |
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| 2002 GMC Sierra 1500 SL 4.3L MIL Lamp on VIN: 2GTEC19W22 Thank you everyone that took the time to help me. I checked for intake gasket leaks. I reset the fuel trims several times. I used at least 3 other gauges borrowed from my fellow techs. I'm still leaning towards a lack of correct pressure. Since the original re... Trouble codes: P0171 (Bank 1 lean), P0174 (Bank 2 lean). |
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| 2012 GMC Sierra 2500 HD SLE 6.6L No Start VIN: 1GT120C83C Thank you for the replies. Although these newer generation 6.6's are a different design and function a lot different than previous systems, sometimes it comes back to basics. We removed the return lines from the injectors (careful, they break easily)and cran... Trouble codes: P2610 (Internal engine off timer). |
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