Replacement Control Module for Lippert Ground Control 304135

Updated 02/04/2026 | Published 01/29/2026

Question:

I need to buy a 304135 Lipperd front jack computer.

asked by: Craig P

Expert Reply:

Hey Craig! Is this a Lippert Ground Control system? Is the part actually 304136? I asked Lippert and they said they don't have anything under 304135. If it is the 304136 the correct replacement is the Replacement Control Module for Lippert Ground Control 3.0 Electric Leveling System # LC304136.

expert reply by: Robin H

Replacement Control Module
(click to enlarge)

Craig P.

2/3/2026

That could be it. I got the part number from a rv mechanic. Is it called a computer.

Robin H.

2/3/2026

@CraigP I would take a look at the part and confirm the part number. Computer could be used interchangeably with controller, it is basically the brain of the system. I could see a mechanic calling it this. Do you have a 2018 Grand Design Reflection? If so what model is it? Grand Design lists their parts so I might be able to see if the Ground Control is what you have on their through their site.

Craig P.

2/4/2026

Hi Robin It is a 2018 Reflection Model 337rls

Robin H.

2/4/2026

@CraigP thank you. The Grand Design parts site does show you have the Lippert Ground Control and the control module is 304136 so that lines up with everything else and # LC304136 as the replacement part.

See All (4) Replies to Craig P. ∨

Tom A.

2/3/2026

The controller board was easy to replace. My old controller board failed due to short circuit caused by a rodent that chewed on wires connected to one of the leveler jacks. Make sure there are no issues with the harnesses before connecting the power to the new controller and activating the system.New controller board is working great, but I now perform a walk around the RV and check all the exposed jack harnesses for damage before activating the leveling system.

Gena S.

2/3/2026

My jack controller failed after barely 2 years. I replaced it with the part# they supplied to you. It was considered a second generation controller as my original part was no longer made. (I am sure they figured out there were issues with that controller) It took about 20 minutes to replace. Keep in mind after you replace it you will need to level your rig and reset the controller to tell it hey this is level. Be sure its exact, check with a bubble level before the reset as the controler will use that setting as level eveytime you use it. My trailer is a 2021 Mesa Ridge