Good morning to everyone!
I recently joined the 300k mile club, and that's why I decided to make an account here and just share my story
I own a 2002 Avalanche Z71. I am the 3rd owner, first owner put 120k miles on the truck, the second owner only managed to add 30k miles, so I started using my Avy with 150k miles on it, all original parts. So I'm the other who started to change the old and used parts here and there. I rebuilt the front suspension, changed wheel hubs, brake pads and rotors, replaced the water and gas pump. My first real problem came at 200k miles, my rear differential started humming. I abused my Avy every day for work, carrying and pulling over the weight limit specs. So I changed the axle bearings, seals and differential interior bearings. I didn't get rid of the humming sound, but all damaged bearings were replaced to keep carrying and pulling
The next issue came at about 255k miles, when my front differential started leaking. So I did the same thing as before and took it down to replace seals, axle bearings and differential bearings.....these bearings were far more damaged than my rear differential bearings lol thankfully they got replaced just in time.
270k miles came along and my transfer case housing started leaking, apparently the oil pump inside creates a tiny hole within time and it leaks. All the interior components were in good condition so I only replaced the housing and seals....
Major surgery came right after the 300k, when my Avy started slipping gears
couldn't get into 3rd gear nor 4th. Worse case scenario is that I was away from home working, didn't know a good mechanic and prices to rebuild it were double the cost. So I had to drive my Avy 200 miles to nearest big city (where I found pa decent price of 800 to rebuild my transmission with 1 year warranty)....the whole trip I locked my shifting stick on 2nd gear and went driving 50mph the whole way lol yes I did make it
So that's where I'm at, 302k miles....original engine still. I desperately need a paint job lol I'll post pics so everyone can see what I'm talking about.
Any tips/suggestions from another 300k Avy owner? THANKS!