That’s the one thing on these trucks that’s really important to check is those rear axle seals at the backing plates. Have the rear discs pulled off to inspect those rear seals behind them. If you’re a potential new buyer, be aware that both sides should be changed, not just one.
This job requires the wheels, brakes, parking brakes, backing plates to come off on each side. Then the axles need to be pulled for the $12 seal so the rear diff needs to be drained and the clips removed and correctly installed after the axles are back in.
If you catch bad rear axle seals before you buy one of these have the seller pay to do the job before you get it. Give the technician a new set of parking brake shoes, new rotors, new pads and a happy meal.
You’ll get the equivalent of a $1.4k dealer rear brake job and a $150 rear diff service for free just because their disassembling everything.
Congrats and update the title to FIXED!