This is a very simple procedure and will save you lots of money by replacing it yourself! A common replacement item on GM vehicles, it should be readily available at your local auto parts retailer and should take no more than a half-hour with just a couple of tools.
• Turn the ignition key to the OFF position.
• Remove the Connector Position Assurance (CPA) and disconnect the wiper motor electrical connector.
• Remove the three screws that secure the cover to the wiper motor and remove the cover.
• Inspect for sealant on the inside of the cover and then discard the cover and screws. Important:
If sealant was found on the old cover, it will be necessary to remove any old sealant from the motor housing in Step 6.
• Carefully remove the module (circuit board) from the wiper motor by lifting up on the end of the module electrical connector.
• If necessary, remove any old sealant from the wiper motor housing (refer to Step 4). Notice:
handling the new module in the next step, be careful not to damage or
band the electrical contacts on the bottom side of the module.
the module into the wiper motor housing, making sure that the module is
fully seated. When fully seated, the edges of the module circuit board
will be flush (even) with the motor housing along all sides.
• Carefully apply a bead of silicone sealant, P/N 12345739 (or GE-162
sealant or equivalent) in the groove of the NEW cover (Figure 2). Remove
any excess sealant that is outside of the groove. Important:
Only apply enough sealant to fill the groove in the cover.
Install the new cover on the wiper motor housing and install the three new screws.
• Tighten the screws to 2.6 N·m (23 lb in).
• Reconnect the wiper motor electrical connector to the wiper motor assembly and install the CPA.
• Turn the ignition key to the ON position and check the wiper system for proper operation (delay/low/high/etc.).