2010 Yukon XL SLT ** Alternator?

[Obeezy]

Is there a way for me to determine whether I have an ** alternator? I want to do a dual battery set up and I read another thread saying some Yukons didn't come equipped. Before I start collecting all the parts I want to verify.

Thanks
Chris

 

[Boyntonx2]

Look in your glove box for RPO codes.
K68 105AMP
8X5 Duel 105AMP
KG7 125AMP
KG8 130AMP
KG3 145AMP
KW1 160AMP
Not sure what defines "high output" but my denali xl has the Kw1 code

 

[Obeezy]

Thanks @Boyntonx2