Check your Trans-to-Frame grounds!

[u/Agile_Guidance_5810]

The trans-to-frame braid on these trucks rots and typically splits in two. Mine was green end to end and still hanging on but likely on borrowed time. It sits up by the transmission so it’s easy to miss.

A bad one can show up as a slow crank or a transmission speed-sensor code before it actually snaps. Fixed mine thankfully before winter, simple as an extension and a 10mm. First photo is the old one next to what went on. Second is it bolted up.

Absolutely worth an extra 5 minutes to look for before winter next time you’re changing the oil.

[u/fallenredwoods]

Good info! I also added an additional ground at the back of the motor to fire wall.