Martin’s Auto Parts. D6298A AC Delco Turn Signal Switch Front for Chevy Olds Avalanche Suburban Yukon. Description / Notes: Terms of Use. AC Delco Turn Signal Switch. AC DELCO – OE REPLACEMENT TURN SIGNAL SWITCHES. The factory-original fit and lasting function of AC Delco’s OE replacement turn signal switches provide the perfect repair without breaking your budget. Established in 1899, …Read more »