2017 Tahoe 5.3 - Tranny, Diff and Transfer Case

[Dan17]

My Tahoe is the 4 wheel drive 6 speed auto and I want to replace the fluids and filter so my questions is, how can I identify what tranny is in it and what differentials and transfer case it has? Are there tags on each component?

 

[OR VietVet]

Your owners manual will list all your required fluids for that rig.

 

[Jeff_]

You have the 6L80 trans.
Like PNW VietVet said, the owners manual lists everything that you need.

 

[Bob2C]

Go with AMSOIL Signature for transmission and 75w-90 Severe Gear for the differentials.. You wont be disappointed... Just my .02

 

[Dan17]

One last question. I've looked thru my owners manual and my Haynes service manual and I don't see any mention about Rear Axle Lubricant or Gear Oil Additive which I believe is needed for Limited Slip rear ends.

Is this needed for this vehicle when changing the rear diff fluid? It is listed on the RockAuto web site.

 

[OR VietVet]

The chart above, supplied by @Jeff_, lists the lubricant you should use for the rear axle. You do not need the additive you speak of.

 

[swathdiver]

One last question. I've looked thru my owners manual and my Haynes service manual and I don't see any mention about Rear Axle Lubricant or Gear Oil Additive which I believe is needed for Limited Slip rear ends.

Is this needed for this vehicle when changing the rear diff fluid? It is listed on the RockAuto web site.

Your rear axle is a Salisbury 12-bolt 9.5" axle produced by AAM. It does not require any additives. The front axle is a Saginaw 8.25" IFS also made by AAM, the transfer case was produced by MagnaPower and is either an MP3010 (single speed - RPO NP0) or the MP3023 (2-speed - RPO NQH).

Consider "flipping the pill" on the 6L80 transmission to make it last longer. They have a shorter life in your car than our older ones presumably because GM put a thermostat in them to keep the temperatures up to what the coolant is.

 

[Dan17]

Swathdiver, thanks for listing the above info.
What is "flipping the pill"?

 

[Dan17]

Thanks Bob2c.

 

[TollKeeper]

I think this is flipping the pill..