Whan doing the Denali cluster/ trans temp gauge, how do you hook up the gauge? Does the pcm already read trans temp? Can you do this with a handheld programmer, or do you have to have serious computer work?
All trucks are prewired for the gauge. Just plug it in and it will work. I don't know why GM can't be the first one to have a tranny temp gauge standard on all 1/2 tons first.
2015 GMC Sierra RCSB Z71 5.3
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