2001 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.6L V8 Diesel OHV Turbo, 6.0L V8 Gas OHV
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Rear Outer
2-SPEED, PUSH BUTTON CONTROL, ACTIVE TRANSFER CASE(NP8) 4WD
2001 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.6L V8 Diesel OHV Turbo, 6.0L V8 Gas OHV
Rear Outer
2-SPEED, PUSH BUTTON CONTROL, ACTIVE TRANSFER CASE(NP8) 4WD