Now available from GM is a new 3.73 rear axle option for Silverado and Sierra half-ton pickup trucks, which will effectively increase towing capacities by 1000 lbs. for either truck in both 2WD and ...
• The 4x4 Posi-Lok is a permanent replacement for the failure prone O.E. vacuum and electric front axle engagement systems. • The stock vacuum and electric front axle engagement systems are replaced ...
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