How do I determine rear axle ratio for my 2015 Tahoe LT?

Discussion in 'Performance' started by Paul Cronin, Feb 9, 2020.

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  1. Fless

    Fless Full Access Member

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    ^^^ THIS. G80 is also called Limited Slip in the RPO description. Very common rear diff in these rigs.
     
  2. Solace

    Solace Full Access Member

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    GBA is the color code for black paint
     
  3. Paul Cronin

    Paul Cronin TYF Newbie

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    I received a copy of the vehicle build from Chevy this morning and the GBA code is for the color (black).
     
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  4. Paul Cronin

    Paul Cronin TYF Newbie

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    So if I understand this correctly (sorry, I'm new to this towing stuff)..... the GCWR is the total weight of the Tahoe and the trailer combined that should not be exceeded?
     
  5. PNW VietVet

    PNW VietVet Full Access Member

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    The GCWR is the vehicle, preferably with a full tank of fuel, the trailer with the load carried in it and any gear you load in the tow rig and the weight of people in it. That combined total weight is the GCWR. If you stop for a bag of Quarter Pounders, add that in too. :rolleyes:
     
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  6. Paul Cronin

    Paul Cronin TYF Newbie

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    Thanks, Ill keep that in mind. :)
     
  7. PNW VietVet

    PNW VietVet Full Access Member

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    Something else you need to keep in mind is that besides the engine working hard to pull all the weight, the trans works very hard too. When was last time the fluid and filter were changed? Is the trans cooler free and clear of clogging debris? Are the tires up to snuff with plenty of tread and correct air pressure? Engine cooling system clean and full with no coolant leaks? Engine oil in great shape? In other words did you get maintenance/repair records with this vehicle?
     
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  8. swathdiver

    swathdiver Full Access Member

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    Yessir, exactly right. GCW is the actual combined weight of both vehicles as presently loaded. The "R" at the end of a weight rating signifies maximum limits.
     
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