1999-2024 GMC 1500 3" Rear Block Kit (66-3003)

Fits

If you need to add a slight rake back into your pickup, the last thing you should be doing is stacking blocks; this can cause severe damage and is incredibly unsafe, not to mention illegal in some places. ReadyLift offers a wide variety of rear lift blocks so you can safely add the appropriate amount of height to your truck.  Based on OEM designs and made from cast iron, these blocks are durable, easy to install, and make a great tow package upgrade. 

Part Number: 66-3003

• 3" OEM Style Cast Iron Rear Blocks
• U-Bolts 
• Necessary Hardware
• Anti-rotation ears built-in
• Eliminates stacking blocks

• Shock extensions may be needed depending on the application
• This GM 1500 kit is NOT COMPATIBLE with vehicles equipped with rear composite mono-leaf springs. The mono-leaf is easily identifiable: the U-bolt is round/circular around the top of the leaf spring. 
• This kit only works with vehicles equipped with traditional steel leaf springs

• ReadyLIFT Suspension Inc. and/or Dirty Diesel Customs are NOT responsible for any damage or failure resulting from improper installation.
• Click here to view installation instructions