GM Service Manual Online
For 1990-2009 cars only

Turn Signal Switch Does Not Cancel for Chevrolet Express 1999

Problem

Action

The cancel cam is broken.

Replace the cancel cam. Refer to Turn Signal Cancel Cam and Bearing Thrust Washer - Disassemble - Off Vehicle or Turn Signal Cancel Cam and Bearing Thrust Washer - Assemble - Off Vehicle .

The switch or the anchor bosses are broken.

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