1. Technician Findings & Photos
Uneven pad wear on the driver side and heavy rust across the assembly. Suspect the driver-side caliper piston is sticking (2mm inner pad left vs. 5mm on the passenger side). Recommend replacing front calipers, pads, and rotors as a matched set.
LH Inner Pad: 2mm (Fail)RH Inner Pad: 5mmLH Caliper: Sticking
Technician Photo — Driver-side front caliper showing heavy rust and sticking pistons.Reads 12.2V at rest (~50% charge). Multiple fault codes stored for low voltage, fuel trims, and temperature sensors. Recommend charging and load-testing the battery before clearing codes.
Resting Voltage: 12.2VAlternator Output: 14.3V (Pass)
Upper control arm bushings look a little tired; lower control arms and ball joints are tight. Typical Michigan rust in the area—safe for now, re-check at future oil changes.
Ball Joints: Tight (Pass)Upper Bushings: Minor Aging
Inner and outer tie-rod ends are tight with no play. Steering rack boots are intact and dry.
Engine oil is clean and full; coolant tested to -35°F. Brake fluid flush is included with front caliper replacement.
Even wear across all four tires at 7/32" tread depth. Tire pressures set to 35 PSI door-placard spec.
2. Side-by-Side Part Options (Action Required Item)
When a repair has sensible part choices, we build side-by-side options so you can compare quality aftermarket vs. factory OE parts (or upgrades when applicable) and choose what fits your plans for the truck.
Quoted Only After Inspection (GM Genuine / ACDelco OE Selected)We don't give quotes over the phone—even for brakes. On this Sierra, uneven pad wear turned out to be a sticking caliper rather than worn pads alone. Once your vehicle is inspected on the lift, exact parts and labor options are texted to your phone for approval before any work begins.