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Professional Automotive Repair Technical Discussions for January 10, 2018 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2009 Cadillac DTS 4.6L MIL Lamp on VIN: 1G6KD57Y09 Vehicle was in last January for same problem, P0411 replaced combination valve & secondary air injection pump, has been ok for a year. We had a real cold spell in the single to negative 17 degrees for 2 weeks when this problem occurred again. Customer driv... Trouble codes: P0411 (secondary air injection incorrect flow detected) |
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| 2009 Chevrolet Impala LS 3.5L heater VIN: 2G1WB57K19 Vehicle arrived at shop with the complaint of no heat.Vehicle had engine light and code 128 [t-stat].Found t-stat to be bad [gasket sticking out].replaced.Vehicle has heat at this time off idle but let it sit and you can feel it lose it quickly goes from r... |
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| 2011 Chevrolet Traverse LT 3.6L MIL Lamp on VIN: 1GNKVGED2B A previous tech installed a new timing chain kit about 26K ago and the customer is experiencing the same problems as before it was installed (sluggish, running poor on acceleration). I am currently not experiencing any performance issues but do have codes ... Trouble codes: P0017 (Ckp exhaust cmp correlation bank 1), P0008 (Engine position performance) |
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| 2011 GMC Sierra 2500 HD SLE 6.0L MIL Lamp on VIN: 1GT22ZCG9B Getting Stumped on this one, truck came in with code for rear O2, we diagnosed and replaced, scan tool readings were maxed out at 1.275mv, bias voltage is 1.9V going to sensor and had 1.2 - 1.25 returning back on Low Sig wire. It came back a week later wit... Trouble codes: P0138, P0158 |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2015 Chevrolet Tahoe LTZ 5.3L remote start/alarm VIN: 1GNSKCKC1F ALL FIXED!! THANKS ROBERT FOR THE TSB, CHEVY SENT ME THE SAME ONE, APPARENTLY THESE VEHCILE HAVE MOTION DETECTION INSIDE THE VEHICLE SIMILAR TO A HOUSE SECURTIY SYSTEM, REAR WINDOW DEFOGGER ACTS AS THE GLASS DETECTION FOR THE REAR GLASS "BREAKAGE" ASKED CUS... |
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| 2001 GMC Sierra 1500 HD SLE 6.0L Knock Sensor VIN: 1GTGK13U91 THANKS TO EVERYONE WHO RESPONDED... WE FINALLY GOT THE KNOCK SENSOR OUT..WE GOT THE BROKEN EASY OUT-OUT..WE GOT THE EASY OUT OUT BY DRILLING AROUND THE EASY OUT WITH A DRIMEL TOOL..WE THEN DRILLED THE HOLE BIGGER.USED A BIGGER EASY OUT . FINALLY BROKE LOOSE..A... |
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| 2009 GMC Sierra 1500 SLE 5.3L MIL Lamp on VIN: 3GTEK23319 Thanks for all the replies, I found the engine oil had glitter in it, and a running compression test showed cylinder 5 had inconsistent results. I believe a failing lifter/camshaft is the fault, but the customer decided he didn't want to spend that kind of mon... Trouble codes: P1174. |
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| 2006 Hummer H3 3.5L MIL Lamp on, reduced power VIN: 5GTDN13636 Thanks to all for input, several pointed out fuse #46, we finally did find it in a diagram, would have been faster if fuse block cover was not missing. Finally just went back to basics and started continuity/wiggle testing of harness, was able to reproduce the... Trouble codes: P2176 (Minimum throttle position not learned). |
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