GM Service Manual Online
For 1990-2009 cars only

Hazard Switch Does Not Stay On for GMC Truck GMC C Sierra - 2WD 1999

Condition

Action

The switch or the mounting screws are loose.

Tighten the mounting screws.

Refer to Fastener Tightening Specifications .

The hazard switch is laden with foreign material.

Remove the foreign material.

None of the above.

Replace the switch.

Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle .