i have an 02 silverado with an 8.1 litre. how do i know if it has the 4.10 gear ratio?
There should be a tag showing what the ratio is.. If not, youll have to take the cover off and there maybe a stamp on the ring gear.
Open your glove box and there well be a tag there with all the options codes If you have GT5 in those codes its 4.10 and G80 means it has POSI
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