Four Button Selection Switch w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
Three Button Selection Switch w/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
Browse our selection of quality transfer case control module parts designed specifically for your GMC Sierra 3500. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
Base · SL · SLE · SLT · WT
Cab & Chassis · Crew Cab Pickup · Extended Cab Pickup · Standard Cab Pickup
V8 6.0L · V8 6.6L · V8 8.1L
Automatic · Manual