Gear indicator stops after the truck gets warm.

[jjstohr-13]

Just had my diffs changed for the bigger tires. I had the shop that did the work also get me a Superchips programmer to fix the speedometer. On my way home, the gear indicator turned into 2 dashes. I wasn't too worried about it as I don't need it. However, I noticed that my backup camera didn't turn on when I went into reverse. I also confirmed that my reverse lights don't work. If I turn off the truck and restart it, the indicator comes back temporarily. This morning it was below freezing and the indicator stayed on much longer than yesterday. Could the diffs be the issue? It doesn't seem like that's possible. I also think the speedometer calibration wouldn't do this either as it's intermittent. I'm thinking the cable got bumped. Anyone have any ideas?

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[Hootbro]

Superchips programmer does not come up often in discussions anymore and probably for reasons like this.

I would suggest having anything the Superchips programmer did be unwind and go with something like JScan app or similar.