GSD5011 & All GSD Series Slide Door Parts

LiftMaster GSD5011 Replacement Parts — GSD Series Heavy Industrial-Duty Slide Door Operator

Genuine LiftMaster replacement parts for the GSD series heavy industrial-duty slide door operator. The GSD5011 is the most common version — 1/2 HP, 115V, single phase. Use the exploded diagram to identify your part by its key number, then match it to the tables below.

The GSD drives a horizontal sliding door rather than lifting it, so the drive train is shared with the GT gear-reduced trolley — same 20:1 gear reducer, same torque limiter, same output shaft — while the door hardware is specific to slide doors. Single-slide and bi-parting doors take different hardware and different trolley slider kits, so check which configuration you have before ordering those.

Your model number is on the operator’s data label. The first two digits are horsepower and the last two are voltage and phase, so GSD5011 is 1/2 HP at 115V single phase and GSD5023 is 1/2 HP at 208/230V three phase.

Models Covered

1/2 HP — most common: GSD5011 (115V, 1PH), GSD5021 (230V, 1PH), GSD5023 (208/230V, 3PH), GSD5043 (460V, 3PH), GSD5053 (575V, 3PH), GSD5025 (230V, 50Hz)

3/4 HP: GSD7511, GSD7521, GSD7523, GSD7543, GSD7553

1 HP: GSD1011, GSD1021, GSD1023, GSD1043, GSD1053

1-1/2 HP: GSD1511, GSD1521, GSD1523, GSD1543, GSD1553

Logic 5.0 units: GSD501L5, GSD503L5, GSD505L5, GSD751L5, GSD753L5, GSD755L5, GSD101L5, GSD103L5, GSD105L5

Replacement Parts

Service Kits

The motor’s part number is printed on the motor’s own data label. If you can reach it, read the number straight off the label and match it in the motor tables below — that is the most reliable way to order the right motor.

Motor Replacement Kits

Find your model number on the data label, then pick the column that matches your motor. GSD motors are C-face gear-reduced units, the same family fitted to the GT. TEFC motors are the NEMA 4/12 enclosure versions.

Motor Replacement Kits — Logic 5.0

Note: LiftMaster’s 2023 guide repeats the 3/4 HP part numbers under its 1-1/2 HP Logic 5.0 heading, so we have not listed motors for GSD151L5, GSD153L5 or GSD155L5. Contact us with your serial number and we will confirm the correct motor.

Electrical box parts. The GSD uses the same control boxes as the T, GT, APT, SD and GH. Use the section that matches your unit’s control generation.

Electrical Box — Logic Control 4.0

Electrical Box — Logic Control 5.0

Electrical Box — Contactor Style