robertbrown63
Colorado gearbox slippage
Summary of the thread
A 2005 Chevrolet Colorado with 241,922 km is experiencing gearbox slippage. The issue is suspected to be caused by a transfer case oil wear fault and possibly defective gears. It was confirmed that the problem was due to defective gears in the transfer case, which required repair.
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4 comment(s)
robertbrown63 (community.author)
Fluid level is fine. What viscosity is optimal for transfer case oil on this model year, given the high mileage?
jonathanfox23
Optimal viscosity is tough to nail down without more info, but with that mileage and slippage, I'd be worried about more than just the fluid. Grinding gears are expensive. I'd suggest a shop visit before you get stranded.
robertbrown63 (community.author)
Confirmed, it was defective gears in the transfer case. Repair cost 330€. Thanks for the help.
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CHEVROLET
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COLORADO
jonathanfox23
Gearbox slippage in an older Colorado, huh? Have you checked the transfer fluid level? When was the last time you changed the transfer case oil? Might be worth a look before assuming the worst.