• Sale
  • $40.00
  • Regular price $55.00

2004.5-2006 LLY Duramax DSP5

Key Features:

  • Not Having To Pullover To Flash A Different Tune, Switching Instantly Between Calibrations.
  • Stock, Economy, Tow, Heavy Haul, Performance At The Tip Of Your Fingers.
  • Valet Mode If You Have An Employee Or Teenager So They Can't Adjust Your Tune Settings.
  • Includes All Items Required For Install.
  • Can Be Mounted Anywhere. 
  • Will Work On Duramax Diesel Engines 2004.5-2006 LLY.


  • What Is DSP5?

    • DSP5 Stands For "Duramax Switch Performance". DSP5 Gives You The Ability To Switch Between 5 Calibrations With The Purchase Of SOTF (Shift On The Fly).
    • This Switch Needs To Be Used With An EFILive Tuner.
    • You Must Have A DSP5 Tune To Use This Switch.
    • Calibrations Not Included.



  • Selector Switch
  • Aluminum Knob
  • 1-5 Decal
  • Allen Key

Install Instructions

Install Instructions:

  • ECM Pin Out Duramax 2004.5 - 2006 LLY: Brown Wire 32 - Blue Wire 50
  • Place Pins In The Indicated Holes.
  • After You've Placed The Pins In The Connector And Plugged The Connector Back In, Turn On The Ignition And Press The Small Button On The Back Of The Switch.
  • If One Of The LED's Light Up, The Pins Are Probably Installed. If Not Try Switching The Hole You May Have Put Them In The Wrong Spot.
  • ATTENTION! Loosen The Set Screw Before Installing The Knob For Ease. Do Not Use Unnecessary Force When Installing The Knob, Be Gentle.
  • Your DSP5 Switch Has A Nut And Two Washers. The Bottom Smooth Washer Must Remain On The Bottom With The Tab Located In Hole Number Five. If It Falls Out, Turn The Switch Fully Counterclockwise And Place The Washer Back With The Pin In Hole Five. Make Sure The Switch Moves Exactly Four Clicks Clockwise. If Not, Turn The Switch Back Fully Counterclockwise, Move The Pin And Try Again.