open this link, it will answer alot of questions about your truck.....
http://www.gmupfitter.com/publicat/2008_BB/08_LD_MS_S_T_PU_CC_D3.pdf
truck load of info right there.
http://www.gmupfitter.com/publicat/2008_BB/08_LD_MS_S_T_PU_CC_D3.pdf
truck load of info right there.