Hello everyone, my 2002 Tahoe LS is the first 4x4 I've owned so I was curious what type of preventative maintenance needs to be done to the 4wd system to keep it happy and at what interval? The truck has about 65k on it now and everything is working fine so I'd like to keep it that way.
4wd service question
- Thread starter Dragond76
- Start date
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clkelley
Moderator
Good day,
With the transfer case, it really depends on which one you have in the vehicle. Yours more than likely takes ATF, but I would have to look up your specific truck to find out if yours takes just ATF. Some take GM AutoTrac II fluid. However, either way, most service intervals depend on the fluid itself being used and the manufacturer recommendations from that fluid. That being said, the majority of ATF service intervls for the transfer case are for 100K under normal service conditions and 50K under severe duty service.
That being said, there is also an issue with the transfer case pump shim inside the tc. It has a thin edge on the sides and there is one spot inside there that it will rub all the way through the front housing of the tc and leak fluid. If that accurs you are facing either rebuilding it or replacing it.
Check out this DIY installation Thread I made for the "Pump Rub" issues.
Beyond the transfer case, making sure that your Ujoints are good should be about it. There isn't much you can do to maintain the electrical parts, when they go you just have to replace them.
With the transfer case, it really depends on which one you have in the vehicle. Yours more than likely takes ATF, but I would have to look up your specific truck to find out if yours takes just ATF. Some take GM AutoTrac II fluid. However, either way, most service intervals depend on the fluid itself being used and the manufacturer recommendations from that fluid. That being said, the majority of ATF service intervls for the transfer case are for 100K under normal service conditions and 50K under severe duty service.
That being said, there is also an issue with the transfer case pump shim inside the tc. It has a thin edge on the sides and there is one spot inside there that it will rub all the way through the front housing of the tc and leak fluid. If that accurs you are facing either rebuilding it or replacing it.
Check out this DIY installation Thread I made for the "Pump Rub" issues.
Beyond the transfer case, making sure that your Ujoints are good should be about it. There isn't much you can do to maintain the electrical parts, when they go you just have to replace them.
clkelley
Moderator
No problem at all, let me know if you need anything else....
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