Parts from the Brake back plate category for other GMC models:
GMC SAVANA 1500 Standard Passenger Van brake disc back plate
GMC Savana 2500 Extended Passenger Van brake disc back plate

Brake System: other spare parts for your Sierra III 1500 Extended Cab Pickup model : GMC Sierra III 1500 Extended Cab Pickup ABS Pump, GMC Sierra III 1500 Extended Cab Pickup ABS Sensor, GMC Sierra III 1500 Extended Cab Pickup Brake Caliper Bracket, GMC Sierra III 1500 Extended Cab Pickup Brake Caliper Repair Kit, GMC Sierra III 1500 Extended Cab Pickup Brake Calipers, GMC Sierra III 1500 Extended Cab Pickup Brake Discs, GMC Sierra III 1500 Extended Cab Pickup Brake Drum, GMC Sierra III 1500 Extended Cab Pickup Brake Fluid, GMC Sierra III 1500 Extended Cab Pickup Brake Hose, GMC Sierra III 1500 Extended Cab Pickup Brake Light Switch, GMC Sierra III 1500 Extended Cab Pickup Brake Master Cylinder, GMC Sierra III 1500 Extended Cab Pickup Brake Pad Wear Sensor, GMC Sierra III 1500 Extended Cab Pickup Brake Pads, GMC Sierra III 1500 Extended Cab Pickup Brake Power Regulator, GMC Sierra III 1500 Extended Cab Pickup Brake Servo, GMC Sierra III 1500 Extended Cab Pickup Brake Shoes, GMC Sierra III 1500 Extended Cab Pickup Brake Vacuum Pump, GMC Sierra III 1500 Extended Cab Pickup Hand brake Cable, GMC Sierra III 1500 Extended Cab Pickup Handbrake Shoes, GMC Sierra III 1500 Extended Cab Pickup Reluctor Ring, GMC Sierra III 1500 Extended Cab Pickup Wheel Cylinder