Just a reminder of one odd thing a mechanic buddy made me aware if on my last RV, which was a Ford F53 chassis. Not sure if it holds true for the Chevy or not but bears checking. Don't trust my terminology 100%, but the gist of it is that the torque converter unlocks based on the current draw from the brake lights when you step on the pedal. The LED bulbs don't draw enough power to cause it to unlock, resulting in transmission damage. Simple solution is just to wire an incandescent bulb somewhere in the circuit and wrap it with electrical tape so you don't have to see the light from it. This gets the current draw you need. I'd rather cry wolf on this than see you damage your rig. Sure surprised me when I heard it. Good luck!
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2015 Legacy SR340 360RB with 2014 Wrangler Unlimited Toad
Gigi, Poppy and Sadie the Jack Russell (all 14 lbs of her)
2015 Legacy SR340 360RB
2014 Jeep Wrangler Unlimited Toad
Gigi, Poppy and Sadie Lady...On the road, but not full time!