I have access to a dirt cheap complete transmission from a 95' trailboss that I would like to put in my 00' trailblazer. It is making my head hurt to go back and forth on the parts microfiche to compare the gear cases.

I would have to drive a long distance to see the 'boss transmission, so I can't compare the two side by side.

I haven't yet torn apart my trailblazer transmission, but I suspect that the silent chain has stretched and the internal sprockets may be worn out as well. I can cause the internal parts to jump when I spin the driven sheave by hand while holding the bike with the parking brake. This only happens in forward gear, and I can shift back and forth through neutral and reverse. I have put higher power levels in reverse and it won;t slip. makes a horrible racket when it slips with the engine running.

If the gear cases themselves won;t bolt up, will the internal sprockets and silent chain? The blazer has 19 and 51 tooth internal sprockets, and the boss has 19 and 51 tooth sprockets (with different part numbers) but use the same silent chain part number. Maybe I might get lucky and the 51 tooth sprocket might swap out, and I would just need a new chain and 21 tooth sprocket?

hoping Old Polaris Tech will see this and respond. He has a ton on knowledge on these things.

 

Problem is that the frames are different to accept the transmission mounted brake on the 95 model versus the axle mounted brake on the 2000 model.Plus the Trail Boss has a low range to where the Trail Blazer just has a high range,which is really no big deal,but the transmission shaft/front sprocket probably wouldn't line up with the rear sprocket on the 2000 model. Easier just to rebuild your own transmission.Dirt Cheap Yamaha, Honda, Arctic Cat & Polaris OEM Parts & Accessories – Cycle Parts Warehouse Dirt Cheap Yamaha, Honda, Arctic Cat & Polaris OEM Parts & Accessories – Cycle Parts Warehouse

 

Thanks OPT, glad to get a definitive answer so I can move forward in the right direction.

 

Pulled the transmission apart and the only thing I found was the silent chain had stretched. Minimal wear on the sprokets. All the bearings and even the shift dog were in good condition. New chain for $42 and we are back in business. Went for a ride yesterday and it runs like a champ. Glad I did not just try to swap out the trans for another used trans. I doubt I will have open up this transmission again.

 

A lot of transmissions the "silent" chain as it's called is all I had to replace. You'd think a double row chain wouldn't stretch that much,but they do. Just enough to jump gear teeth and make an awful racket. Glad you got out cheap.