ReadyLift 4" Rear Block Kit for 2011-2026 GMC Sierra 3500 HD

All fitment information on our website is provided by the manufacturer. It is the customer's responsibility to thoroughly read the product description and confirm fitment before placing an order and proceeding with installation.

Unless specified otherwise, all suspension products are designed for 2WD vehicles only. Any notes or descriptions related to electronic damping systems (EDC, DDS, etc.) apply strictly to vehicle fitment. Aftermarket coilovers are not compatible with OEM electronic damping control systems unless explicitly stated.

*Product images may not represent the actual SKU.

All handling times are estimates and may change at any time.

• In-Stock: 1 business day
• Out of Stock: TBD

Not quite right? No problem — we offer hassle-free 30-day returns on eligible items. A few exclusions apply.

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READYLIFT® “NO HASSLE” PRODUCT WARRANTY

This unique “no hassle” product warranty proves our commitment to the quality of every product that ReadyLIFT produces.  ReadyLIFT product warranty only extends to the Original Purchaser of any ReadyLIFT product.  If it breaks, we will give you a new part. 

READYLIFT “NO HASSLE” WARRANTY PROCEDURES

Any ReadyLIFT products containing missing or defective components will be covered under warranty by ReadyLIFT.  Please call 800-549-4620 to initiate a warranty claim.  Rest assured our customer service team will urgently address the matter and expedite the replacement parts.  In the event of a defective product, ReadyLIFT may request a return of the defective product (at ReadyLIFT expense) so the quality team can analyze the nature of the defect.  Returning defective product will not delay the replacement part delivery.

ReadyLIFT leveling kit, block kits and lift kit products are NOT intended for off-road abuse. Any abuse or damage as a result of off-road use voids the warranty of the ReadyLIFT product.  Exception: ReadyLIFT Jeep SST and Terrain Flex Lift Kits are designed for normal off-road use to compliment the Jeep vehicle's off-road capability.  All Jeep Lift Kit products are covered under warranty when used in recreational off-road environments.

Warranty does not apply to discontinued, clearance or outlet products.  Wearable components including, but not limited to, shocks, ball joints, heim joints, bushings, and steering extensions, are covered for up to 1-year. Labor, installation, surcharges or any other applicable fees from the original purchase are non-refundable. ReadyLIFT is not responsible for any consequential damage to vehicles.

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