Rear diff and axle shot at 236K

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TheFuzz

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Well, dropped the burb off at the dealership to have them diagnose a loud pop followed by a repetative ticking/clunking noise. Turns out one of the brake backing plates came loose and a chunk got torn off, which was making contact with the wheel (hence the repetative noise). While back there, they saw that the rear brakes were shot, which didn't surprise me as I've known they were just about ready to be replaced. They also noticed that the front axle seals and diff seals are leaking, and the oil pan gasket is weeping quite a bit.

Now, try to follow along here:

While tearing the calipers, pads and rotors apart, the service writer told me that in order to pull off the old backing plates, the techs had to drop the axle, drain the diff and pull/replace the rear axle seals due to the way that the backing plates mounted to the axle. Cost? $1400. With the diff open and the axle seals out, they found that the rear end is pretty much gone. Ring and pinion is toast from wear, and the axle itself is worn out. New R&P gears are about $90, and the rear axle is about $600. No additional labor to replace since they were already in there, but jaysus, we're in it for over $2k on a truck with 236k miles, just for the rear end and rear brakes. Sheesh. I'll do the front axles and gaskets myself as it's not too complicated and they wanted an absolutely rediculous amount of money for the work ($686 for JUST the oil pan gasket! WTF). :shocked:

The truck has been in the family since new, and the rear diff fluid has been replaced four or five times. No towing, just alot of road miles for vacations and whatnot. My father in law (who, thankfully, is footing the bills for the repairs since he gave the truck to us this way) seems to think that everything should be A-OK back there...me, on the other hand? I wasn't surprised at all to hear that the gears were shot. 236K of metal-to-metal, even with fresh fluid, is asking alot for a hard-use set of parts. Anyone have an opinion one way or another? Sound normal? How about the deal with the backing plates? Anyone ever have to replace one, and if so, did you have to do the axle seals too?
 
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southboundchicken

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with that kind of mileage it doesnt suprise me you need a rebuild but thats a lot of dough to put into a high milage truck next thing you know the trans takes a dump then a new motor next thing you know you've got a ton of money into it you'll never get out. personally, i'd look for one from a junk yard and take my chances
 
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TheFuzz

TheFuzz

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If it were me, I'd say screw it and sell it as is for $5-6K and put that money toward a newer truck with less miles.

Not my show though. If my wife's dad wants to fix it, I'll let him. He's aware of the risks with the transmission. Engine is solid. He has lots of auto parts sources through his business so I think he's got plans for the transmission when it takes a dump.
 

Vinniety

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If the truck was maintained and in the same family im sorry but i think they took you for a ride. The back plate should be removed but you can also cut out the bad part and go on with it. The backing plate is a thin piece of metal and they rot and start flexing and cause rubbing against the rotor that cause the noise you had. As for the Ring and pinion being toast from wear is unheard of.
Anyway no matter what be careful what these dealerships state. Im almost sure they did this...........looked at your mileage and said this truck needs major work.
 

Modded

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If it was family owned/maintained without towing, then there is no way it needs all that. Either the fluid may have been leaking at some point in between those fluid changes that led to excessive wear, or they are bullshitting.
Dealerships are real good at selling unneeded services/parts. Get a drive train specialists and drive him up to the dealer, get to the back and have him tell you what is really needed.
 

Campi3ell

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IMO with 236K miles on her, you have gotten your money's worth out of the truck.

These repairs are going to lead to other repairs that are just as costly, if not more. If you want to spend the money to keep the truck for a bit longer, that's fine. I say sell it and buy something newer, with fewer miles, with the money that was going to be spent on repairs.
 

gbert06

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Why not find a complete used diffy with moderate mileage?? Costs you under a grand installed. Thats what i would do. Just my 5cents though. Hope you found a solution.
 

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