When your Ground Control TT electric leveling system stops extending or retracting properly, the motor and gearbox assembly is one of the most common failure points. The Lippert 656216 is the direct-fit OEM-spec replacement for the 404488 jack, letting you restore full leveling function without replacing the entire jack assembly.
The Lippert Ground Control TT system is one of the most widely used electric stabilizer setups on travel trailers. Over time, the motor or internal gearbox can wear out from repeated cycles, corrosion, or moisture intrusion -- especially on rigs that see year-round use or off-pavement travel. The 656216 assembly replaces the motor and gearbox as a matched unit, ensuring proper torque output and gear mesh without the guesswork of sourcing components separately.
This is a Lippert-branded replacement part, designed to the same specifications as the original installed unit. Vendor part number 62-4498 may appear on some dealer invoices and service orders for this same assembly.
Matched to the 404488 jack assembly for drop-in fit with no modification required.
Sold as a complete matched assembly -- no need to source motor and gearbox separately.
Designed for Lippert Ground Control TT electric stabilizer systems common on travel trailers.
Corrects slow extension, failure to retract, grinding, or no-movement faults in the jack.
Ground Control TT (Travel Trailer) is Lippert's electric stabilizer jack platform used on a wide range of travel trailers from numerous manufacturers. The system uses individual electric jack motors at each corner to raise and lower the stabilizer legs via a 12V DC drive. The 404488 is the specific jack assembly this motor and gearbox (656216) is designed to service.
Because the motor and gearbox are internal to the jack housing, replacing them as a tested matched assembly is the recommended repair approach when electrical checks confirm the motor itself is at fault.
Before installing a new motor and gearbox, confirm 12V supply and good ground at the jack plug. A motor that hums but does not move typically points to a seized gearbox or stripped gear. No response at all with power present usually indicates a failed motor winding or open circuit. Replacing this assembly addresses both failure modes.
This motor and gearbox assembly is specifically matched to the Lippert 404488 jack. Lippert produces multiple Ground Control variants with different jack configurations. Verify your jack assembly number (typically stamped on the jack body or listed in your trailer's service records) before ordering. This part is not a universal motor for all Ground Control jacks.