How to Remove Wiper Transmission and Motor 03-07 Cadillac CTS
Difficulty: Intermediate · About 75 min · Cadillac Cts
Replace the windshield-wiper transmission and motor assembly on a 2003–2007 Cadillac CTS, marking blade positions and checking the wiper park and sweep after reassembly.
Tools you will need
- Socket Extensions
- Torque Wrench
- 15mm Socket
- 7mm Socket
- Painter's Tape
- 10mm Socket
- Ratchet
Parts and supplies
- Windshield wiper transmission and motor assembly
Steps
- Mark and remove a wiper arm
Mark the blade's parked position on the windshield with tape. Remove its cap and retaining nut, then lift the arm from the stud without bending it.
- Remove the cowl panel
Peel the weatherstrip back and remove the cowl screws and driver-side retaining nut. Lift the passenger and driver cowl pieces from their locating edges and set them aside.
- Disconnect and remove the wiper assembly
Remove the transmission mounting bolts, lift the assembly enough to reach the harness, and unplug the connector. Withdraw the assembly without catching the linkage on the cowl opening.
- Install the replacement assembly
Reconnect the electrical plug and lower the replacement assembly into its mounts. Install the retaining bolts and tighten them to the vehicle specification, keeping the harness clear of the linkage.
- Reinstall the cowl and weatherstrip
Return the driver and passenger cowl pieces to their original positions, reinstall the fasteners, and press the weatherstrip onto the panel evenly.
- Align the arm and verify wiper operation
Fit the arm at the tape mark and tighten its nut to specification. Reinstall the cap, cycle the wipers through each speed, and confirm they park correctly without hitting the cowl.
Check your vehicle’s repair manual for exact specifications and fit.