Sierra 1500 Rear Axles


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    Some available Rear Axle options for the Sierra 1500 are:

    Year: 2014 GMC Sierra 1500 Rear Axle

  • 6.2L (9.75" ring gear) 3.42 ratio (opt GU6)
  • 4.3L (8.6" ring gear, 10 bolt) 3.42 axle ratio (opt GU6) (4x4)
  • 5.3L 3.08 ratio (opt GU4) (9.5" ring gear)
  • 5.3L 3.73 ratio (opt GT4) (9.75" ring gear)
  • 5.3L 3.42 ratio (opt GU6) (9.5" ring gear)
  • 6.2L (9.75" ring gear) 3.73 ratio (opt GT4)
  • 4.3L (8.6" ring gear, 10 bolt) 3.23 ratio (opt GU5) (4x2)


  • Year: 2013 GMC Sierra 1500 Rear Axle

  • 8.6" ring gear (10 bolt) w/o hybrid non-active brake control (opt JG4)
  • 8.6" ring gear (10 bolt) w/o hybrid active brake control (opt JL4) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) w/o hybrid active brake control (opt JL4) 3.08 ratio (opt GU4)
  • 8.6" ring gear (10 bolt) w/o hybrid active brake control (opt JL4) 3.42 axle ratio (opt GU6)
  • 9.5" ring gear (14 bolt) 3.42 axle ratio (opt GU6)
  • 8.6" ring gear (10 bolt) hybrid (opt HP2)
  • 9.5" ring gear (14 bolt) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) w/o hybrid active brake control (opt JL4) 3.23 ratio (opt GU5)


  • Year: 2012 GMC Sierra 1500 Rear Axle

  • 8.6" ring gear (10 bolt) w/o hybrid active brake control (opt JL4) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) w/o hybrid active brake control (opt JL4) 3.42 axle ratio (opt GU6)
  • 8.6" ring gear (10 bolt) hybrid (opt HP2)
  • 8.6" ring gear (10 bolt) w/o hybrid active brake control (opt JL4) 3.08 ratio (opt GU4)
  • 8.6" ring gear (10 bolt) w/o hybrid non-active brake control (opt JG4)
  • 9.5" ring gear (14 bolt) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) w/o hybrid active brake control (opt JL4) 3.23 ratio (opt GU5)
  • 9.5" ring gear (14 bolt) 3.42 axle ratio (opt GU6)


  • Year: 2011 GMC Sierra 1500 Rear Axle

  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 w/o active brake control
  • 9.5" ring gear (14 bolt) 3.42 axle ratio (opt GU6)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JG4
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.23 ratio (opt GU5)
  • 9.5" ring gear (14 bolt) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.08 ratio (opt GU4)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) hybrid (opt HP2)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.42 axle ratio (opt GU6)


  • Year: 2010 GMC Sierra 1500 Rear Axle

  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.23 ratio (opt GU5)
  • 9.5" ring gear (14 bolt) 3.73 ratio (opt GT4)
  • 9.5" ring gear (14 bolt) 3.42 axle ratio (opt GU6)
  • 8.6" ring gear (10 bolt) hybrid (opt HP2)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.42 axle ratio (opt GU6)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JG4
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.08 ratio (opt GU4)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 w/o active brake control


  • Year: 2009 GMC Sierra 1500 Rear Axle

  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.42 axle ratio (opt GU6)
  • 8.6" ring gear (10 bolt) hybrid (opt HP2)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 w/o active brake control 3.23 ratio (opt GU5)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.08 ratio (opt GU4)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JG4 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.23 ratio (opt GU5)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 active brake control (opt JL4) 4.10 ratio (opt GT5)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JF3 or JF7 w/o active brake control 3.73 ratio (opt GT4)
  • 9.5" ring gear (14 bolt) 3.42 axle ratio (opt GU6)
  • 8.6" ring gear (10 bolt) w/o hybrid brake opt JG4 3.23 ratio (opt GU5)
  • 9.5" ring gear (14 bolt) 3.73 ratio (opt GT4)


  • Year: 2008 GMC Sierra 1500 Rear Axle

  • 8.6" ring gear (10 bolt) brake opt JF3, JF7 or JG4 w/o active brake control 3.42 axle ratio (opt GU6)
  • 9.5" ring gear (14 bolt) brake opt JD9 3.42 axle ratio (opt GU6)
  • 8.6" ring gear (10 bolt) brake opt JF3, JF7 or JG4 w/o active brake control 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) brake opt JF3, JF7 or JG4 active brake control (opt JL4) 3.23 ratio (opt GU5)
  • 8.6" ring gear (10 bolt) brake opt JF3, JF7 or JG4 active brake control (opt JL4) 4.10 ratio (opt GT5)
  • 9.5" ring gear (14 bolt) brake opt JD9 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) brake opt JF3, JF7 or JG4 w/o active brake control 3.23 ratio (opt GU5)
  • 9.5" ring gear (14 bolt) brake opt JF3
  • 8.6" ring gear (10 bolt) brake opt JD9
  • 8.6" ring gear (10 bolt) brake opt JF3, JF7 or JG4 active brake control (opt JL4) 3.73 ratio (opt GT4)
  • 8.6" ring gear (10 bolt) brake opt JF3, JF7 or JG4 w/o active brake control 4.10 ratio (opt GT5)
  • 9.5" ring gear (14 bolt) brake opt JD9 4.10 ratio (opt GT5)
  • 8.6" ring gear (10 bolt) brake opt JF3, JF7 or JG4 active brake control (opt JL4) 3.42 axle ratio (opt GU6)


  • Year: 2007 GMC Sierra 1500 Rear Axle

  • classic style Extended Cab 4.10 ratio (opt GT5) 9.5" ring gear
  • classic style Regular Cab 3.73 ratio (opt GT4) 8.6" ring gear disc Rear brakes
  • classic style Regular Cab 4.10 ratio (opt GT5) 9.5" ring gear
  • new style 8.6" ring gear (10 bolt) brake opt JF3 or JF7 w/o active brake 3.42 axle ratio (opt GU6)
  • new style 8.6" ring gear (10 bolt) brake opt JF3 or JF7 active brake (opt JL4) 3.23 ratio (opt GU5)
  • new style 8.6" ring gear (10 bolt) brake opt JF3 or JF7 w/o active brake 3.73 ratio (opt GT4)
  • classic style Extended Cab 3.23 ratio (opt GU5) drum Rear brakes opt JF7
  • classic style Crew Cab 8 stud 4.10 ratio (opt GT5)
  • classic style Extended Cab 3.23 ratio (opt GU5) disc Rear brakes
  • classic style Regular Cab 3.23 ratio (opt GU5) drum Rear brakes opt JF7
  • new style 8.6" ring gear (10 bolt) brake opt JF3 or JF7 w/o active brake 3.23 ratio (opt GU5)
  • classic style Crew Cab 8 stud 3.73 ratio (opt GT4)
  • classic style Crew Cab 6 stud 3.42 axle ratio (opt GU6)
  • classic style Regular Cab 3.73 ratio (opt GT4) 9.5" ring gear
  • classic style Regular Cab 3.73 ratio (opt GT4) 8.6" ring gear drum Rear brakes opt JF7
  • classic style Extended Cab 3.73 ratio (opt GT4) 9.5" ring gear
  • classic style Crew Cab 6 stud 3.73 ratio (opt GT4) 8.6" ring gear
  • new style 8.6" ring gear (10 bolt) brake opt JD9
  • classic style Extended Cab 3.73 ratio (opt GT4) 8.6" ring gear disc Rear brakes
  • classic style Regular Cab 4.10 ratio (opt GT5) 8.6" ring gear opt JF3
  • new style 8.6" ring gear (10 bolt) brake opt JF3 or JF7 active brake (opt JL4) 3.73 ratio (opt GT4)
  • classic style Crew Cab 6 stud 3.23 ratio (opt GU5)
  • classic style Extended Cab 4.10 ratio (opt GT5) 8.6" ring gear opt JF7
  • classic style Regular Cab 3.42 axle ratio (opt GU6) drum Rear brakes
  • classic style Extended Cab 3.73 ratio (opt GT4) 8.6" ring gear drum Rear brakes opt JF7
  • new style 8.6" ring gear (10 bolt) brake opt JF3 or JF7 active brake (opt JL4) 4.10 ratio (opt GT5)
  • classic style Regular Cab 3.23 ratio (opt GU5) drum Rear brakes opt JF3
  • new style 9.5" ring gear (14 bolt) brake opt JD9 4.10 ratio (opt GT5)
  • classic style Regular Cab 4.10 ratio (opt GT5) 8.6" ring gear opt JF7
  • classic style Crew Cab 6 stud 4.10 ratio (opt GT5) 8.6" ring gear
  • new style 8.6" ring gear (10 bolt) brake opt JF3 or JF7 active brake (opt JL4) 3.42 axle ratio (opt GU6)
  • new style 9.5" ring gear (14 bolt) brake opt JD9 3.42 axle ratio (opt GU6)
  • classic style Regular Cab 3.42 axle ratio (opt GU6) disc Rear brakes
  • classic style Regular Cab 3.23 ratio (opt GU5) disc Rear brakes
  • classic style Extended Cab 4.10 ratio (opt GT5) 8.6" ring gear opt JF3
  • classic style Regular Cab 3.73 ratio (opt GT4) 8.6" ring gear drum Rear brakes opt JF3
  • new style 9.5" ring gear (14 bolt) brake opt JF3
  • classic style Extended Cab 3.73 ratio (opt GT4) 8.6" ring gear drum Rear brakes opt JF3
  • new style 8.6" ring gear (10 bolt) brake opt JF3 or JF7 w/o active brake 4.10 ratio (opt GT5)
  • classic style Extended Cab 3.42 axle ratio (opt GU6) drum Rear brakes
  • classic style Crew Cab 6 stud 4.10 ratio (opt GT5) 9.5" ring gear
  • classic style Crew Cab 6 stud 3.73 ratio (opt GT4) 9.5" ring gear
  • classic style Extended Cab 3.23 ratio (opt GU5) drum Rear brakes opt JF3
  • classic style Extended Cab 3.42 axle ratio (opt GU6) disc Rear brakes
  • new style 9.5" ring gear (14 bolt) brake opt JD9 3.73 ratio (opt GT4)


  • Year: 2006 GMC Sierra 1500 Rear Axle

  • Regular Cab 3.23 ratio (opt GU5) drum Rear brakes opt JF7
  • Regular Cab 3.23 ratio (opt GU5) disc Rear brakes
  • Regular Cab 3.73 ratio (opt GT4) 9.5" ring gear (opt AXN)
  • Extended Cab 3.42 axle ratio (opt GU6) drum Rear brakes opt JF3
  • Extended Cab 4.10 ratio (opt GT5) 8.6" ring gear opt JF3
  • Regular Cab 4.10 ratio (opt GT5) 8.6" ring gear opt JF7
  • Crew Cab 6 lug wheel 4.10 ratio (opt GT5) 9.5" ring gear (opt AXN)
  • Extended Cab 3.73 ratio (opt GT4) 8.6" ring gear disc Rear brakes
  • Extended Cab 3.73 ratio (opt GT4) 8.6" ring gear drum Rear brakes opt JF3
  • Extended Cab 3.42 axle ratio (opt GU6) disc Rear brakes
  • Extended Cab 3.23 ratio (opt GU5) drum Rear brakes opt JF7
  • Extended Cab 3.23 ratio (opt GU5) disc Rear brakes
  • Regular Cab 4.10 ratio (opt GT5) 8.6" ring gear opt JF3
  • Regular Cab 3.73 ratio (opt GT4) 8.6" ring gear drum Rear brakes opt JF7
  • Extended Cab 3.42 axle ratio (opt GU6) drum Rear brakes opt JF7
  • Crew Cab 6 lug wheel 3.42 axle ratio (opt GU6)
  • Regular Cab 3.42 axle ratio (opt GU6) disc Rear brakes
  • Crew Cab 8 lug wheel 3.73 ratio (opt GT4)
  • Regular Cab 3.73 ratio (opt GT4) 8.6" ring gear drum Rear brakes opt JF3
  • Regular Cab 4.10 ratio (opt GT5) 9.5" ring gear (opt AXN)
  • Extended Cab 3.23 ratio (opt GU5) drum Rear brakes opt JF3
  • Crew Cab 6 lug wheel 4.10 ratio (opt GT5) 8.6" ring gear
  • Regular Cab 3.73 ratio (opt GT4) 8.6" ring gear disc Rear brakes
  • Crew Cab 8 lug wheel 4.10 ratio (opt GT5)
  • Crew Cab 6 lug wheel 3.23 ratio (opt GU5)
  • Crew Cab 6 lug wheel 3.73 ratio (opt GT4) 8.6" ring gear
  • Regular Cab 3.42 axle ratio (opt GU6) drum Rear brakes opt JF3
  • Crew Cab 6 lug wheel 3.73 ratio (opt GT4) 9.5" ring gear (opt AXN)
  • Extended Cab 3.73 ratio (opt GT4) 8.6" ring gear drum Rear brakes opt JF7
  • Regular Cab 3.42 axle ratio (opt GU6) drum Rear brakes opt JF7
  • Extended Cab 3.73 ratio (opt GT4) 9.5" ring gear (opt AXN)
  • Extended Cab 4.10 ratio (opt GT5) 9.5" ring gear (opt AXN)
  • Regular Cab 3.23 ratio (opt GU5) drum Rear brakes opt JF3
  • Extended Cab 4.10 ratio (opt GT5) 8.6" ring gear opt JF7


  • Year: 2005 GMC Sierra 1500 Rear Axle

  • Regular Cab 4x2 3.42 axle ratio (opt GU6) vacuum power brakes (opt JF7)
  • Regular Cab 4x4 3.42 axle ratio (opt GU6) vacuum power brakes (opt JF7)
  • Regular Cab 4x2 3.23 ratio (opt GU5) hydraulic power brakes (opt JH1)
  • Extended Cab w/o Quadrasteer 3.23 ratio (opt GU5) hydraulic power brakes (opt JH1)
  • Extended Cab w/o Quadrasteer 3.23 ratio (opt GU5) vacuum power brakes (opt JF7)
  • Crew Cab 8 lug wheel w/o Quadrasteer 3.73 ratio (opt GT4)
  • Regular Cab 4x2 3.73 ratio (opt GT4) vacuum power brakes (opt JF7)
  • Extended Cab w/o Quadrasteer 3.73 ratio (opt GT4) 8.6" ring gear vacuum power brakes (opt JF7)
  • Extended Cab w/o Quadrasteer 3.73 ratio (opt GT4) 9.5" ring gear (opt AXN)
  • Crew Cab 8 lug wheel Quadrasteer (opt NYS) 4.10 ratio (opt GT5)
  • Extended Cab Quadrasteer (opt NYS) 4.10 ratio (opt GT5)
  • Extended Cab w/o Quadrasteer 4.10 ratio (opt GT5)
  • Regular Cab 4x4 4.10 ratio (opt GT5)
  • Extended Cab w/o Quadrasteer 3.73 ratio (opt GT4) 8.6" ring gear hydraulic power brakes (opt JH1)
  • Extended Cab w/o Quadrasteer 3.42 axle ratio (opt GU6) vacuum power brakes (opt JF7)
  • Regular Cab 4x4 3.42 axle ratio (opt GU6) hydraulic power brakes (opt JH1)
  • Crew Cab 6 lug wheel 3.42 axle ratio (opt GU6)
  • Regular Cab 4x2 3.73 ratio (opt GT4) hydraulic power brakes (opt JH1)
  • Crew Cab 6 lug wheel 3.73 ratio (opt GT4)
  • Crew Cab 8 lug wheel w/o Quadrasteer 4.10 ratio (opt GT5)
  • Regular Cab 4x2 3.42 axle ratio (opt GU6) hydraulic power brakes (opt JH1)
  • Regular Cab 4x4 3.73 ratio (opt GT4) hydraulic power brakes (opt JH1)
  • Crew Cab 8 lug wheel Quadrasteer (opt NYS) 3.73 ratio (opt GT4)
  • Crew Cab 6 lug wheel 4.10 ratio (opt GT5)
  • Regular Cab 4x4 3.73 ratio (opt GT4) vacuum power brakes (opt JF7)
  • Regular Cab 4x2 3.23 ratio (opt GU5) vacuum power brakes (opt JF7)
  • Extended Cab Quadrasteer (opt NYS) 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 3.42 axle ratio (opt GU6) hydraulic power brakes (opt JH1)
  • Crew Cab 6 lug wheel 3.23 ratio (opt GU5)


  • Year: 2004 GMC Sierra 1500 Rear Axle

  • Crew Cab 6 lug wheel 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 3.73 ratio (opt GT4) spring special (opt B2E)
  • Regular Cab 4x2 3.08 ratio (opt GU4)
  • Crew Cab 6 lug wheel 4.10 ratio (opt GT5)
  • Crew Cab 8 lug wheel w/o Quadrasteer 3.73 ratio (opt GT4)
  • Extended Cab Quadrasteer (opt NYS) 3.73 ratio (opt GT4)
  • Regular Cab 4x2 3.42 axle ratio (opt GU6)
  • Extended Cab w/o Quadrasteer 3.73 ratio (opt GT4) w/o spring special
  • Regular Cab 4x4 4.10 ratio (opt GT5)
  • Extended Cab w/o Quadrasteer 3.42 axle ratio (opt GU6)
  • Extended Cab Quadrasteer (opt NYS) 4.10 ratio (opt GT5)
  • Regular Cab 4x2 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 4.10 ratio (opt GT5)
  • Crew Cab 6 lug wheel 3.42 axle ratio (opt GU6)
  • Regular Cab 4x4 3.73 ratio (opt GT4)
  • Crew Cab 8 lug wheel Quadrasteer (opt NYS)
  • Crew Cab 8 lug wheel w/o Quadrasteer 4.10 ratio (opt GT5)


  • Year: 2003 GMC Sierra 1500 Rear Axle

  • Extended Cab Quadrasteer (opt NYS) 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 4x2 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 4x4 3.73 ratio (opt GT4)
  • Regular Cab 4x4 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 4x2 3.08 ratio (opt GU4)
  • crew cab w/o Quadrasteer 4.10 ratio (opt GT5)
  • crew cab w/o Quadrasteer 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 4x2 3.42 axle ratio (opt GU6)
  • crew cab Quadrasteer (opt NYS) 3.73 ratio (opt GT4)
  • Regular Cab 4x2 3.42 axle ratio (opt GU6)
  • Regular Cab 4x2 3.08 ratio (opt GU4)
  • Regular Cab 4x2 3.73 ratio (opt GT4)
  • Regular Cab 4x4 4.10 ratio (opt GT5)
  • crew cab Quadrasteer (opt NYS) 4.10 ratio (opt GT5)
  • Extended Cab w/o Quadrasteer 4x4 4.10 ratio (opt GT5)
  • Extended Cab Quadrasteer (opt NYS) 4.10 ratio (opt GT5)


  • Year: 2002 GMC Sierra 1500 Rear Axle

  • Regular Cab 4x2 3.42 axle ratio (opt GU6)
  • Extended Cab w/o Quadrasteer 4x2 3.73 ratio (opt GT4)
  • Regular Cab 4x4 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 4x4 4.10 ratio (opt GT5)
  • Regular Cab 4x2 3.73 ratio (opt GT4)
  • Crew Cab 3.73 ratio (opt GT4)
  • Regular Cab 4x2 3.08 ratio (opt GU4)
  • Regular Cab 4x4 4.10 ratio (opt GT5)
  • Extended Cab Quadrasteer (opt NYS) 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 4x2 3.42 axle ratio (opt GU6)
  • Crew Cab 4.10 ratio (opt GT5)
  • Extended Cab Quadrasteer (opt NYS) 4.10 ratio (opt GT5)
  • Extended Cab w/o Quadrasteer 4x4 3.73 ratio (opt GT4)
  • Extended Cab w/o Quadrasteer 4x2 3.08 ratio (opt GU4)


  • Year: 2001 GMC Sierra 1500 Rear Axle

  • Crew Cab 4.10 ratio (opt GT5)
  • exc. Crew Cab 4x2 3.42 axle ratio (opt GU6)
  • Crew Cab 3.73 ratio (opt GT4)
  • exc. Crew Cab 4x4 4.10 ratio (opt GT5)
  • exc. Crew Cab 4x4 3.73 ratio (opt GT4)
  • exc. Crew Cab 4x2 3.08 ratio (opt GU4)
  • exc. Crew Cab 4x2 3.73 ratio (opt GT4)


  • Year: 2000 GMC Sierra 1500 Rear Axle

  • 4x2 3.73 ratio (opt GT4)
  • 4x2 3.08 ratio (opt GU4)
  • 4x2 3.42 axle ratio (opt GU6)
  • 4x4 3.73 ratio (opt GT4)
  • 4x4 4.10 ratio (opt GT5)


  • Year: 1999 GMC Sierra 1500 Rear Axle

  • 4x2 3.08 ratio (opt GU4)
  • 4x2 3.73 ratio (opt GT4)
  • 4x4 3.73 ratio (opt GT4)
  • 4x2 3.42 axle ratio (opt GU6)
  • 4x4 4.10 ratio (opt GT5)