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Performance Specs

2012 Sierra 2500 HD SLT Long Bed Extended Cab Pickup Specs

Read about the 2012 GMC Sierra 2500 HD SLT Long Bed Extended Cab Pickup engine specifications, fuel economy, EPA mileage estimates, exterior and interior measurements including detailed specification of the 2012 Sierra 2500 HD SLT Long Bed Extended Cab Pickup Utility horsepower and 2500 HD SLT Long Bed Extended Cab Pickup performance specs.
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We are still collecting the latest 2012 GMC Sierra specifications. Please check back soon for the most up to date specifications.
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