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2021 GMC Sierra 2500 HD
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60-Day Returns
Lifetime Replacement
2021 GMC Sierra 2500 HD

2021 GMC Sierra 2500 HD Differential Lock Actuators

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Differential Lock Actuator, Sold individually
AC Delco®
Differential Lock Actuator, Sold individually
Part Number: AC12471543
Guaranteed to Fit
$158.49
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD AT4 8 Cyl 6.6L 4-Door, Crew Cab Pickup, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), 11.50 RING GEAR DANA
  • 2021 GMC Sierra 2500 HD Base 8 Cyl 6.6L 2-Door, Standard Cab Pickup, 3.42 Ratio(GU6), POSITRACTION L/SLIP R/AXL(G80), 11.50 RING GEAR DANA
  • 2021 GMC Sierra 2500 HD SLE 8 Cyl 6.6L 4-Door, Crew Cab Pickup, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), 11.50 RING GEAR DANA
  • 2021 GMC Sierra 2500 HD SLT 8 Cyl 6.6L 4-Door, Extended Cab Pickup, 3.42 Ratio(GU6), POSITRACTION L/SLIP R/AXL(G80), 11.50 RING GEAR DANA
  • 2021 GMC Sierra 2500 HD Denali 8 Cyl 6.6L 4-Door, Crew Cab Pickup, 3.73R(GT4), POSITRACTION L/SLIP R/AXL(G80), 11.50 RING GEAR DANA
Product Details
Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warranty
Differential Lock Actuator, Sold individually
AC Delco®
Differential Lock Actuator, Sold individually
Part Number: AC84757348
Guaranteed to Fit
$14.49
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD Base 8 Cyl 6.6L 2-Door, Standard Cab Pickup, 3.73R(Gt4); Positraction L/Slip R/Axl(G80)
  • 2021 GMC Sierra 2500 HD SLE 8 Cyl 6.6L 2-Door, Standard Cab Pickup, 3.42 Ratio(Gu6); Positraction L/Slip R/Axl(G80)
  • 2021 GMC Sierra 2500 HD SLT 8 Cyl 6.6L 4-Door, Extended Cab Pickup, 3.42 Ratio(Gu6); Positraction L/Slip R/Axl(G80)
  • 2021 GMC Sierra 2500 HD Denali 8 Cyl 6.6L 4-Door, Crew Cab Pickup, 3.73R(Gt4); Positraction L/Slip R/Axl(G80)
  • 2021 GMC Sierra 2500 HD AT4 8 Cyl 6.6L 4-Door, Crew Cab Pickup, 3.73R(Gt4); Positraction L/Slip R/Axl(G80)
Product Details
Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warrantyProduct Fit : Direct Fit
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