RepairPal Certified shops can diagnose and repair your 1996 GMC C1500 Suburban. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
fuse or wires to them is damaged or out, take it to a shop or find a good electrician. try to change the fuse, bulbs to l.e.d.'s in this manner burnout, older vehicle probably your wiring is shot. pain to trouble shoot though.