Product Details

The ReadyLift 3" Rear Block Kit is a 1999-2024 GMC Sierra 1500 rear block kit that raises the rear of the truck.

ReadyLIFT OEM-style rear block kits are available for model specific applications. These Rear Block Kits include two (2) 3" Rear Blocks, four (4) E-Coated U-Bolts, eight (8) Nuts and Washers and will safely lift the rear of your truck an additional 1" to 3" depending on the application. Based on OEM designs and never made out of light weight extrusions, our 3" GM Blocks are made from cast iron and have anti-rotation ears built-in.

Fits 1999-2021 classic and current body style 6-lug model GM trucks. Models with 1.25" OEM blocks will want to take advantage of the additional 1.75" of lift for towing and hauling, particularly when using a front leveling kit. 1999-2006 4WD trucks will replace the factory 2" block for 1" of additional lift. This kit eliminates the dangers of having to stack blocks which may be illegal in some states.

Features

  • OEM style cast iron rear lift blocks for a durable and reliable lift
  • Includes new U-bolts for easy installation
  • Can provide additional clearance for larger tires and improved ground clearance
  • Shock extensions may be needed depending on application for proper suspension alignment and performance

Installation Instructions

ReadyLIFT installation instructions (PDF)

Specifications
Part Number 66-3003
Part Name ReadyLift 3" Rear Block Kit
Vehicle 1999-2024 GMC Sierra 1500
Drivetrain RWD/4WD
Install Time 1 Hour
Weight 23.20 lb
UPC 893131001301
Notes ReadyLIFT application: 3" Rear Block Kit, GM Silverado & Sierra 1500 6-lug 1999-2024.

Vehicle fitment

This product fits the vehicles listed below.

YearMakeModelDrivetrainNotes
1999GMCSierra 1500RWD
1999GMCSierra 15004WD
2000GMCSierra 1500RWD
2000GMCSierra 15004WD
2001GMCSierra 1500RWD
2001GMCSierra 15004WD
2002GMCSierra 1500RWD
2002GMCSierra 15004WD
2003GMCSierra 1500RWD
2003GMCSierra 15004WD
2004GMCSierra 1500RWD
2004GMCSierra 15004WD
2005GMCSierra 1500RWD
2005GMCSierra 15004WD
2006GMCSierra 1500RWD
2006GMCSierra 15004WD
2007GMCSierra 1500RWD
2007GMCSierra 15004WD
2008GMCSierra 1500RWD
2008GMCSierra 15004WD

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