2003 GMC Sierra 3500 equipped with 8.1L V8 Gas OHV, 6.6L V8 Diesel OHV Turbo, 6.0L V8 Gas OHV
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ELECTRIC SHIFT 2 SPEED TRANSFER CASE(NP1), 2-SPEED, PUSH BUTTON CONTROL, ACTIVE TRANSFER CASE(NP8) 4WD
2003 GMC Sierra 3500 equipped with 8.1L V8 Gas OHV, 6.6L V8 Diesel OHV Turbo, 6.0L V8 Gas OHV
ELECTRIC SHIFT 2 SPEED TRANSFER CASE(NP1), 2-SPEED, PUSH BUTTON CONTROL, ACTIVE TRANSFER CASE(NP8) 4WD