The HB705Y.776 is a rear-axle brake pad from Hawk Performance in its LTS (Light Truck and SUV) compound, fitted to full-size GM trucks and vans in the Silverado, Sierra, Express, and Savana families. The LTS compound uses Hawk Performance's established ferro-carbon formulation to provide superior stopping power for full size light trucks, SUVs, and vans. The 0.776-inch pad thickness is the dimension that matters for fit, so confirm it against your existing pads before ordering. Trucks that tow or carry heavy loads run their rear brakes hotter and more often, which is where a stock pad is most likely to fade and where an LTS-grade compound earns its price over a basic replacement.
Fitment is the main buying risk. Published application lists disagree on model years, cab and trim levels, and whether the 2500HD and 3500HD and Express 4500 variants are covered, so match the listing against your VIN and rear brake hardware before you buy. Searching for HB705Y.776 with "2500HD rear pads," "3500HD towing brake pads," or "Express 4500 rear LTS pads" will surface the right application notes for your truck, and it helps to pull the part number off your old pads to cross-check.
Yes. The manufacturer specifies 6 to 10 slow-downs from about 30 to 35 mph to 5 mph with moderate pressure, followed by 2 to 3 harder stops from about 40 to 45 mph. Do not drag the brakes, do not come to a complete stop during the procedure, and allow about 15 minutes for the system to cool before normal driving.
The manufacturer's install procedure says rotors should be checked for thickness, parallelism, and lateral runout, and for scoring or grooves deeper than about 0.012 inch. If that limit is exceeded, resurfacing or replacement is required. If the rotors are acceptable, remove the old pad contamination by sanding with garnet paper and cleaning with soap and water, then make sure the rotors are free of oil, grease, and brake fluid.
Published fitment lists for this part vary on model years and trim levels, so the application data should be confirmed against your VIN before you order. Owners on user forums also recommend double-checking the rear caliper and hardware type on your truck.
This is a rear brake pad job that a home mechanic with a jack, jack stands, and standard sockets can handle. The manufacturer's procedure starts with installing the pads properly and making sure they sit securely in the caliper, then flushing the system with fresh brake fluid and checking all hydraulic parts for wear. Inspect the calipers for free movement and lubricate the slide pins where needed. Owners on user forums recommend greasing the caliper pins and the shims, and applying anti-squeal compound to the backs of the pads (not the friction faces) to reduce noise. Keep the rotor surface clean of grease and brake fluid, and complete the bed-in procedure before towing or hard driving. Torque specs and any hardware-specific steps should be confirmed against your factory service information.
