Troubleshooting Guide
31
PROBLEM
DIAGNOSTIC CHECK
RESULT
24. Plow and truck High
beam and Low beam
are on at the same time.
Check headlight adapters
for correct connections.
Light adapters for GM
trucks can be plugged in
two ways. Make sure all
four adapters are
connected in the proper
orientation for your vehicle.
25. Plow High beam and
Low beam are on at the
same time.
Check vehicle option
connector.
Refer to electrical system
wiring instructions located
within this manual. Vehicle
option connector may need
to be reversed.