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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 26, 2024
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Open Help Requests for All Makes and Models
Help Request Answers
2007 Chevrolet Tahoe LTZ 5.3L Electronic VIN: 1GNFK13087
Customer has traction lights on the dash. Scan vehicle, no communication with TCM. Check power, grounds, comm lines, wake up signal to TCM all correct. Replace TCM with AC Delco reman, very low warranty rate. TCM communicating correctly, cannot clear the f...
2014 Chevrolet Trax LS 1.4L Cam timing VIN: 3GNCJPEB8E
I have not worked on one of these before, its a shop vehicle so I got sucked in. Doing a head gasket. When I unloaded the tensioner I felt/heard something slip on the exhaust side and suspected it jumped a tooth or two, but wasn't looking. 2014 Ecotec ...
2008 GMC Yukon XL 1500 Denali 6.2L No Start, No Start VIN: 1GKFK66888
3 engine replaced old engine, ran 1500 miles then oil PSI, dropped , put rebuild engine in , cranks, pops in the air box, cranks but no start, no codes fuel PSI Good , can see crank and cam signal ,

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2013 Cadillac CTS 3.0L Ipc VIN: 1G6DE5E58D
First I removed the cluster and traced the circuits pin #19 red/white wire back to the under hood fuse box C2 pin #57. Connector pin #57 was dislodged. Found that it was in the harness to tightly. Repositioned it and taped it in a better position and put the h...
2020 GMC Sierra 2500 HD AT4 6.6L Trailer Brake VIN: 1GT49PEY6L
Thank you thank you. Both of you had it right Kevin, pin 14 at Chassis module was my problem. Had the green funk on the pin terminal back side voltage was testing at 5v. I went to glow plug engine connector checked the circuit and found system voltage. It wa...
2016 Mercedes-Benz E400 3.0L Start / Stop VIN: WDDKJ6FB4G
Thank you for all of the replies! It helps to know what the relay coupling is! The relay coupling is where you jump start the car. That part is under the hood next to the (main) battery. What fooled us was the reading in the Xentry for the Aux battery (in trun...
2017 Porsche Cayenne 3.6L Poor Idle Quality VIN: WP1AA2A24H
This repair has been in hands of two different techs here over several months time. Eventually was determined that cam actuator plugs were swapped intake and exhaust. Hidden on rear of engine of course but still... Trouble codes: P0140, P52A0, P54A0.
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