An power window motor is also called a window lift motor, or a car glass lift motor. It is the electrical motor that when attached to the power window regulator, raises the window glass up and down. When the window switch is depressed or raised, which creates an actuation telling the window motor whether to move forward or backward. As the motor gear moves forward and backward, the regulator gear or cable spool wheel is also moved. YHTAUTO window motors are specifically designed to achieve the performance and function of OEM components. Item Specification Item Type: Window Lift Motor Install Location: Left and Right, Driver and Passenger Side Note: With 12-Teeth Gear Reference Number: 742-150, 82-144, 42-144, 12497971, 22039707, 22062528, 24015712, 22030651, 12487630, 22030652, 12362900, 12362901, 16629278 Vehicle Information Cadillac Commercial Chassis 1992 Cimarron/DeVille 1985-1988Cadillac Fleetwood 1985-1989 Seville 1985-1991 Brougham 1990-1992Chevrolet Impala/Citation II 1985 K5 Blazer 1986Chevrolet V10/V20 1987 R2500 1989Chevrolet C20/C10,C20 Suburban 1985-1986 S10 Blazer 1991-1994Chevrolet K10/K20/K30/K10, K20 Suburban 1985-1986Chevrolet Caprice/Celebrity 1985-1990 Cavalier 1985-2005Chevrolet V10 Suburban/V20 Suburban/V30 1987-1988Chevrolet R10/R20/R30 1987-1991 R1500, R2500 Suburban 1989-1991Chevrolet V1500, V2500 Suburban/R3500/V3500 1989-1991 Buick Somerset Regal 1985 LeSabre 1985-1986 Somerset 1986-1987Buick Electra 1985-1987 Skyhawk 1985-1989Buick Century 1985-1996 Skylark 1985-1998GMC R1500/V1500/V2500 1987 S15 Jimmy 1991GMC C1500/C2500/C3500/C1500 Suburban/C2500 Suburban 1985-1986GMC K1500/K2500/K3500/K1500,K2500 Suburban 1985-1986GMC Jimmy 1985-1994 R2500 1987-1989GMC V1500,V2500, R2500 Suburban/R3500 1987-1991 Oldsmobile Calais 1985-1987 Firenza 1985-1988Oldsmobile 98 1985-1989 Custom Cruiser/Delta 88 1985-1990Oldsmobile Cutlass Ciera 1985-1996 Cutlass Calais 1988-1991Oldsmobile Bravada 1991-1994 Achieva 1992-1998Pontiac Parisienne 1986 Bonneville 1985-1987Pontiac 6000 1985-1991 Grand Am 1985-1998Pontiac Sunbird 1986-1994 Safari 1987-1989 Sunfire 1995-2005 Please confirm the vehicles' model, year as well as the location when you purchase! The picture does not match the actual situation Figuring Out if Window Motor Fails 1. Use the owner's manual when looking for fuse boxes and other electrical components connected to the window motors. Check if the fuse is blown. In case of damage, a new fuse with the same amperage should be replaced. 2. After removing the power window relay, install a jumper (terminals 30 and 87) to see whether the motor is working or not. If the power window works when using a jumper, there is no problem with the motor. 3. The reading should be around 12VDC for terminal 4 and terminal 5. Terminals 1-4 and 2-3 should have a reading of less than 1 ohm if the switch is open. If the switch is close, you should be able to observe low resistance from terminals 1-3 and 2-5. Low voltage is an indication of a motor or switch problem. 4. Connect the electrical connector to the motor and try operating the window. If the motor is good, you should see some movement or hear some noise coming from the motor. If you see movement, the regulator is usually at fault. If the motor shows no movement, it’s probably bad. The above steps are for reference only. If you do not know how to operate, please consult a professional mechanic. Figuring Out if Window Motor Fails 1. Use the owner's manual when looking for fuse boxes and other electrical components connected to the window motors. Check if the fuse is blown. In case of damage, a new fuse with the same amperage should be replaced. 2. After removing the power window relay, install a jumper (terminals 30 and 87) to see whether the motor is working or not. If the power window works when using a jumper, there is no problem with the motor. 3. The reading should be around 12VDC for terminal 4 and terminal 5. Terminals 1-4 and 2-3 should have a reading of less than 1 ohm if the switch is open. If the switch is close, you should be able to observe low resistance from terminals 1-3 and 2-5. Low voltage is an indication of a motor or switch problem. 4. Connect the electrical connector to the motor and try operating the window. If the motor is good, you should see some movement or hear some noise coming from the motor. If you see movement, the regulator is usually at fault. If the motor shows no movement, it’s probably bad. The above steps are for reference only. If you do not know how to operate, please consult a professional mechanic. How to Extend the Useful Life of Window Motors