This 2005 GMC Sierra 3500 Duramax is a clean truck originally from Florida with only 110k miles!
Owner says that it had a big FIRE under the hood a few years ago, but was restored and was driving fine for a couple years until recently.
Now the truck shifts poorly, has low power, and is throwing COMMUNICATION codes on the Drivetrain Network. P0073, P0101, P0106 are stored on the High-Speed CAN that connects the ECM, TCM, FICM, and GPCM.
However this is an older truck, and the ECM and TCM talk to the SCANNER only on the single-wire Class 2 GMLAN network...
Out of desperation a refurbished TCM ($500) was installed on the Duramax, and of course that didn't fix anything at all!
Some research is required, and also a good multi-channel OSCILLOSCOPE to diagnose this issue!
THINKTOOL PROS:
www.amazon.com...
IVAN'S PICO WAVEFORMS:
drive.google.c...
Enjoy!
Ivan
Негізгі бет Caught on FIRE!? Duramax CAN't Communicate? (U0073 - ECM-TCM-FICM-GPCM)
No video
Пікірлер: 162