Wiper Won't Shut Off
- If wipers works correctly in "DELAY", turn ignition "ON" and wiper switch "OFF". Disconnect terminal 1, 2, 3 connector. Connect test lamp between wires to terminals 1 and 2. If power is present terminal 1 wire is grounded or switch is defective. If no power, check park relay spring. If ok, replace park relay.
- If wipers do not stop in "DELAY" mode, check to see if wipers park when ignition is turned "OFF". If so, clean wiper holding switch contacts or replace timer/switch assembly. If not, check override switch contacts, grounded blue wire, or replace timer/switch assembly.
Courtesy of GENERAL MOTORS COMPANY