How To Replace Wiper Pulse Control Board 99-06 GMC Sierra 2500
Difficulty: Intermediate · About 60 min · Gmc Sierra
Replace the wiper pulse control board on a 1999–2006 GMC Sierra 2500 by removing the wiper arms and cowl, then restoring the washer hose and arm alignment.
Tools you will need
- 13mm socket
- 10mm socket and ratchet
- T20 Torx driver
- Flat blade screwdriver
Parts and supplies
- Wiper pulse control board
Steps
- Remove the wiper arms and cowl clips
Release the cowl clips and side panels, disconnect the washer hose, and remove the wiper arm caps and 13mm nuts. Lift each arm from its stud and set it aside safely.
- Remove the pulse board
Lift the cowl cover and support it so it does not strain attached components. Remove the four 10mm brace bolts, unplug the board harness, and remove the three T20 screws holding the module.
- Install the replacement board
Align the new board with its mount and install the three T20 screws. Reconnect the wiring harness, refit the brace, and tighten its four bolts to the vehicle's specification.
- Reinstall arms and test wipers
Return the cowl and side panels, then place each wiper arm on its stud at the correct parked position. Tighten the nuts to specification, reconnect the washer hose, and test the wipers and washers.
Check your vehicle’s repair manual for exact specifications and fit.