Truck slams into reverse.

[Dm23]

My truck off and on will only slam/jolt in Reverse. Temp is at 155 or so. No codes no lights. Sometimes it does it sometimes it doesn’t. Anyone have any thoughts. Transmission built by mike. November 2021 With the R converter. Is this not a big deal or something that needs attention?

 

[08lmm72mm]

I'd give Mike/Evan a call I'm sure they'd be more than happy to help you out.

 

[NC-smokinlmm]

Mine did that when I bent the fork in my transfer case. Check your fluid...

 

[Dm23]

I am not 4 wheel drive so no transfer case, but I will look at the fluid level.

 

[NC-smokinlmm]

Probably converter drain back.

 

[Dm23]

Fluid level is normal after running it around town.