General Motors has issued a new service update involving improperly torqued bolts in the rear lower control arm on certain units of the GMC Sierra EV pickup.
A month after the debut of the all-new 2011 Chevy Silverado HD, GMC has now announced its version of the work truck, the Sierra Denali HD.Powered by the same 6.6-liter Duamax engine and 6-speed ...
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