Duramax Can’t SHIFT? TCM Left the CHAT?? (’13 Sierra 2500HD)
Owner of this 2013 GMC Sierra 2500HD Duramax says he was driving along one day, then BOOM the transmission stopped shifting right and went into a “Fail Safe” mode.
Next day the truck drove fine for 20 minutes and then BOOM, same thing!
All the modules are saying “Lost Communication with TCM”…
What is going on with this Transmission Control Module?
Will any EXPENSIVE parts be required?
IVAN’S PICOSCOPE WAVEFORMS:
https://drive.google.com/drive/folders/1oUBU1VlNC4zwhID4525UU5mNHxaxf7Mh?usp=drive_link
TOPDON Phoenix Plus:
https://www.amazon.com/dp/B091BQNR3S?linkCode=ssc&tag=onamzpineholl-20&creativeASIN=B091BQNR3S&asc_item-id=amzn1.ideas.NHZL00NIDEPF&ref_=aip_sf_list_spv_ofs_mixed_d_asin
ATD Tools 5513 Heavy-Duty TEST LIGHT:
https://www.amazon.com/dp/B000M5ZWBA?linkCode=ssc&tag=onamzpineholl-20&creativeASIN=B000M5ZWBA&asc_item-id=amzn1.ideas.UKPVIGM4POWZ&ref_=aip_sf_list_spv_ofs_mixed_d_asin
Bosch MTECH2 Mastertech II J2534 VCI:
https://www.amazon.com/dp/B08DH5B5JN?linkCode=ssc&tag=onamzpineholl-20&creativeASIN=B08DH5B5JN&asc_item-id=amzn1.ideas.NHZL00NIDEPF&ref_=aip_sf_list_spv_ofs_mixed_d_asin
Top 20 YouTube Car Repair Channels in the U.S.
Best Selling Car Brands in the United States
Discover the 100 Most Influential Car YouTube Channels in the U.S.: A Complete Guide
Top 100 Cities for Car Sales and Services in New York NY Northeast USA
Top 100 Cities for Car Sales and Services in New Jersey Northeast USA
Best Car Sales and Services in USA
Toyota Vehicles 2025 — Discover the Full US Lineup
Chevrolet Vehicles 2025 — Explore the Complete U.S. Lineup
Tesla Cars 2025 — Full Guide to Every Model in the USA
