Important Notes

• Fits Gas and Diesel Models.
• Optional front skid plate will not work with 2.7L Turbo or Diesel Engines.
• Requires frame bracket modification.
• Will NOT work with Adaptive Ride Control (ARC) equipped models. (Use ZONC70 or ZONC72).
• Will NOT work with Trail Boss or AT4 models.
• Will NOT work with 2019-2020 1500 Classic Models.
• Will NOT work with Silverado ZR2 or Sierra AT4X models (Use ZONC73).
• If equipped with a mono-leaf rear spring, please use u-bolt part #UBT4064 (Qty 4 required)
• This system has not been tested on models equipped with Super Cruise.
• Stock 17" and 18" wheels cannot be reinstalled due to tie rod end interference, stock 20" wheels CAN be reinstalled.
• 17" wheels with 4.5" backspacing should be test fit prior to mounting the tire to ensure proper clearance to the steering knuckle/tie rod.
• All aftermarket wheels should be test fit prior to mounting the tire to ensure proper clearance to the brake caliper.
• Chevy:37 x 12.50 on 20x9, 22x9 w/ 5.5-6.25" BS**
• 35 x 12.50 on 17x8, 17x9 w/ 4.5" BS*
• 35 x 12.50 on 20x9, 22x9 w/ 4.5-6.25" BS*
•  GMC:
• 295/70 on 17x8, 17x9 w/ 4.5" BS*
• 295/65 on 20x9 w/ 4.5-6.25" BS*
• 35 x 12.50 on 20x9, 22x9 w/ 5.5-6.25" BS*
• ATTN State of California Consumers warning: Cancer and Reproductive Harm