Chevrolet Suburban XI (2015–2020): How to Remove the Bumpers

Production Years and Platform

The Chevrolet Suburban XI was produced from 2015 to 2020 and became the first Suburban built on the new GMT K2XX platform (also used for the Tahoe, GMC Yukon, and Cadillac Escalade). This generation received a completely redesigned structure, including aluminum body components to reduce weight, an improved suspension, and a stiffer body.

In 2018, the model underwent a minor facelift: the grille, lighting, and multimedia system were updated. However, there were almost no technical changes.

 

Model Code and Trim Levels

The official factory designation is K2XX (Suburban 1500). Main trim levels:

  • LS – Base version with cloth upholstery, manual seat adjustment, and minimal electronics.
  • LT – More comfortable trim with upgraded interior, power-adjustable seats, and additional safety features.
  • Premier (LTZ) – Top-tier variant with leather seats, ventilation, heated seating for all rows, adaptive cruise control, and a premium Bose audio system.

There was also an extended Suburban HD (2500) version, but it was based on the GMT800 platform and offered only for special services and commercial customers.

 

Technical Specifications

Engines:

  • 5.3L V8 EcoTec3 (L83) – 355 hp, 519 N·m (main engine, compatible with cylinder deactivation for fuel efficiency).
  • 6.2L V8 EcoTec3 (L86) – 420 hp, 624 N·m (available only for Premier and RST trims).
  • 3.0L Duramax Turbo-Diesel I6 (LM2, from 2020) – 277 hp, 623 N·m (rare option for markets with high fuel taxes).

Transmission:

  • 6-speed automatic (6L80) – until 2018.
  • 10-speed automatic (10L80) – after the facelift (only for the 6.2L V8).

Drivetrain:

  • Rear-wheel drive (RWD) – standard.
  • Four-wheel drive (4WD) – optional, with AutoTrac system (automatic front axle engagement).

The bumper mounting points are nearly identical to those of the fourth-generation Chevrolet Tahoe (2015–2020).

 

Bumper Plastic Marking >TPO<

How to Remove the Front Bumper

  1. Open the hood.
  2. (If installed) Remove twelve clips under the hood and take off the cover.
  3. Under the cover, unscrew six bolts (fastened top to bottom) securing the upper side of the front bumper and the grille.
  4. For easier access, turn the front wheels inward one at a time.
  5. In the wheel arches, unscrew four screws on each side and detach the front part of the fender liners.
  6. Unscrew one screw on each side securing the bumper corners to the fenders.
  7. From underneath, unscrew eight bolts (varying sizes).
  8. Release the clips in the fenders (be careful not to damage them—bend the fender liners and partially unscrew three screws on each side securing the plastic brackets to the fenders).
  9. With an assistant, pull the bumper forward (mind the wiring).
  10. Disconnect the fog light connectors (if equipped) and other electronic components (if equipped).

Chevrolet Suburban XI (2015–2020) Front Bumper Mounting Locations

Chevrolet Suburban XI Front Bumper Mounting Diagram (2015–2020)

How to Remove the Rear Bumper

⇒Useful tips on how to remove the bumper and not break anything.⇐

  1. Open the tailgate.
  2. Inside the trunk opening, unscrew four Torx screws securing the upper part of the rear bumper.
  3. From underneath, unscrew six screws (fastened bottom to top) securing the lower part.
  4. (Left and right sides) In the wheel arches, unscrew five screws securing the rear part of the fender liner and one screw (fastened bottom to top) securing the corner to the fender.
  5. Release the clips in the fenders (grip the corner firmly and pull sharply with slight force).
  6. With an assistant, pull the bumper backward (ensure the wiring harness is not damaged).
  7. On the right side (in the direction of travel), disconnect the main electrical connector.

Chevrolet Suburban XI (2015–2020) rear bumper mounting locations

Chevrolet Suburban XI Rear Bumper Mounting Diagram (2015–2020)

Interesting Facts

  • The longest Suburban in history – a wheelbase of 3302 mm (+12 cm compared to the previous generation), with an overall length exceeding 5.7 meters.
  • The first Suburban with magnetic suspension – Magnetic Ride Control (only in top trims).
  • Used by the White House – the Suburban XI served as an official vehicle for the U.S. Secret Service.
  • The diesel version arrived late – the Duramax engine was added only in 2020, shortly before the generation change.

 

Pros

  • Spacious interior – three rows of seats with ample legroom, especially in the second row.
  • Powerful engines – even the base 5.3L V8 confidently tows up to 3.5 tons.
  • Quiet cabin – excellent sound insulation and smooth ride (especially with magnetic suspension).
  • Reliability – fewer issues with the frame and transmission compared to competitors (Ford Expedition, Nissan Armada).

Cons

  • High fuel consumption – up to 18–20 L/100 km in the city (for gasoline versions).
  • Uncomfortable third row – narrow seats, suitable only for children.
  • Expensive maintenance – parts cost more than Japanese alternatives.
  • Weak brakes – stock discs overheat quickly for such a heavy vehicle.

 

Conclusion

The Suburban XI (2015–2020) is a classic American SUV with a massive interior and powerful engines. It’s ideal for large families and long trips but requires significant fuel and maintenance costs. The 2018 facelift refreshed the design slightly but didn’t address the model’s main drawbacks. If you need a practical and prestigious vehicle, it’s a solid choice, but owners in countries with expensive fuel should consider the diesel version.