Chevrolet Silverado II (2007-2013) How to Remove the Bumpers

Production Years

The second-generation Chevrolet Silverado, based on the GMT900 platform, was produced from 2007 to 2013. This generation replaced the GMT800 and marked a significant step forward in design, technology, and comfort. In 2014, production of the next generation—GMT K2XX—began.

Model Code and Modifications

The GMT900 platform was used for full-size pickups and SUVs by General Motors. The Silverado of this generation was offered in three cab configurations:

• Regular Cab (2 doors, 3 seats)
• Extended Cab (4 doors, compact rear doors, 5–6 seats)
• Crew Cab (4 full-size doors, 5–6 seats)

Bed Options:

• Short Bed (1.8 m)
• Standard Bed (2.3 m)
• Long Bed (2.6 m)

GMT900 Silverado Engines:

• 4.3L V6 (195–195 HP) – Base engine, rarely seen.
• 4.8L V8 (295–302 HP) – Reliable but not the most powerful.
• 5.3L V8 (315–326 HP) – The most popular, featuring Active Fuel Management (cylinder deactivation for fuel efficiency).
• 6.0L V8 (367–360 HP) – For SS versions and heavy-duty models.
• 6.2L V8 (403–409 HP) – Top-tier engine in High Country and LTZ trims.

Transmissions:

• 4-speed 4L60E (only in early models)
• 6-speed 6L80 (from 2009 onward)

How to Remove the Front Bumper

1. If fog lights are installed, first disconnect their power connectors.
2. Lift the hood.
3. Remove the clips and take off the trim above the radiator grille.
4. Under the trim, unscrew four (10mm) bolts securing the top of the radiator grille.
5. Pull the radiator grille forward to release it from the clips.
6. Through the opening under the grille, unscrew two long (21mm) bolts securing the front bumper to the brackets.
   • Note: Loosening the four nuts attaching the brackets to the frame rails allows adjustment of the gaps between the bumper and headlights.
7. Unscrew two (15mm) bolts on the wheel arch side.
8. Now, the bumper can be pulled forward and removed.

How to Remove the Rear Bumper

1. Remove the spare tire.
2. Disconnect the power connectors for electronic components.
3. If a trailer hitch is installed, unscrew the two bolts attaching it to the bumper.
4. From underneath, unscrew:
   • Four 18mm nuts
   • Two 15mm bolts
   • Two 21mm bolts securing the rear bumper brackets to the frame rails.
5. With an assistant, pull the bumper backward to remove it.

Description and Features

The GMT900’s exterior became more aggressive and modern compared to the GMT800. The grille grew larger, chrome accents were added, and the body lines became more pronounced.

The interior received upgraded materials, ergonomics, and technology:

• Available navigation and Bluetooth.
• Improved sound insulation.
• Adjustable pedals (in higher trims).

The suspension remained dependent (rear leaf springs), but tuning was softened for better comfort.

Interesting Facts

• First Generation with a 6-Speed Transmission – Before 2009, a 4-speed automatic was used, criticized for being outdated.
• Silverado SS – In 2014, a sport version with a 6.0L V8 debuted, but its acceleration was weaker than rivals (e.g., Ford F-150 SVT Lightning).
• Fuel Economy – The Active Fuel Management (AFM) system in the 5.3L V8 could deactivate 4 cylinders, but many owners reported increased engine wear.
• Military Edition – A special version for the U.S. military with reinforced suspension and underbody protection.

Advantages

• Reliability – LS-based V8 engines (5.3L, 6.0L) are known for durability.
• Comfort – Quiet cabin and smooth ride for a pickup.
• Off-Road Capability – Z71 versions featured reinforced suspension and skid plates.
• Cargo Space – Convenient side storage boxes in the bed (Uplevel Box option).

Disadvantages

• AFM Issues – Cylinder deactivation caused oil starvation and wear.
• Rust Problems – Especially in regions with road salt (wheel arches, frame).
• Weak Acceleration – Even the 6.2L V8 lagged behind the Ford Raptor.
• Cheap Interior Plastics – Base models used low-quality materials.