2020-2024 Jeep Gladiator Bedside Panel: Decoding Damage, Corrosion, and Replacement

Understanding the Gladiator 'Quarter Panel'

For the Jeep Gladiator (JT), the term 'quarter panel' is often used to describe the outer sheet metal of the truck bed. In official Mopar terminology, this part is called the 'Box Side Outer Panel'. Unlike a unibody vehicle, the Gladiator's bed is a separate assembly. This panel is the visible, painted surface on the driver or passenger side of the bed. It is not a simple bolt-on part; it is welded and bonded to the underlying bed structure, making replacement a job for professionals.

Symptoms of a Damaged Quarter Panel

Failure of a bedside panel is always due to physical damage or corrosion, not mechanical breakdown. Symptoms are purely visual and structural.

• Visible Dents, Dings, and Scratches: The most common symptom is damage from collisions, parking lot incidents, or off-road obstacles.
• Paint Bubbling or Peeling: Bubbles or blisters under the paint, especially along edges or seams, are a sign of corrosion. This is a known issue on some aluminum body panels used by Jeep.
• Rust Formation: While the main panels are aluminum, rust can still form on the steel frame underneath or where the paint has been scratched down to bare metal on steel components. Forum users have noted surface rust on frames and welds even on new vehicles.
• Poor Panel Gaps: After an impact, the gap between the truck bed and the cab may become uneven, or the tailgate may not close properly. This can indicate that the entire bed has been knocked out of alignment.

Known Issues, TSBs, and Recalls

TSB for Aluminum Panel Corrosion

Jeep has issued Technical Service Bulletin (TSB) 31-002-20 and subsequent revisions that address corrosion on aluminum body panels for vehicles including the 2020-2024 Gladiator. The symptom is typically bubbling or blistering paint, often starting at the edges of a panel. This is a form of corrosion that can occur when moisture gets under the paint on an aluminum surface. The TSB provides a procedure for dealerships to remove the corrosion and refinish the affected panel. If you see this on your vehicle, it's worth checking with a dealer to see if a repair is covered under warranty.

Vulnerability to Trail Damage

Due to the Gladiator's long wheelbase, the area of the bedside behind the rear wheel is particularly susceptible to damage from rocks, trees, and other obstacles during off-roading. Owners on forums frequently discuss this vulnerability and the need for protective rock sliders that extend to cover this area.

Vehicle-Wide Recalls (Not Part-Specific)

While there are no recalls for the bedside panel itself, numerous recalls have been issued for the 2020-2024 Gladiator. A significant one is NHTSA recall 26V-363, which warns that the electric hydraulic power steering pump connector can overheat and cause a fire, even when the vehicle is parked and off. Owners of affected vehicles are urged to park outside and away from structures until the free recall repair is performed. Other recalls involve the clutch assembly, driveshaft, and instrument panel cluster.

Buying a Used 2020-2024 Gladiator Quarter Panel

A used OEM bedside is an excellent way to save money, as they often have far better fit and finish than new aftermarket parts. However, careful inspection is critical before buying.

• Check for Hidden Repairs: Bring a small magnet. While the Gladiator's bedside is aluminum, a magnet can help you find areas of thick body filler (Bondo), which is non-magnetic and used to hide previous damage. Check for ripples in the reflection, which indicate a past repair.
• Inspect for Corrosion: Look closely at all edges and seams for any sign of paint bubbling. This indicates the start of corrosion that will be difficult and expensive to fix properly.
• Verify the Side and Features: The left (driver's side) panel has a cutout for the fuel door; the right (passenger's side) does not. Also, ensure the cutouts for the taillights and any bed-mounted power outlets match your truck's trim level.
• Assess the Damage: If buying a damaged panel for a lower price, make sure the damage is repairable and not located on a complex body line, which is much harder to fix correctly. A panel with a simple dent in the middle is a much better candidate than one with a crushed corner.

Replacement Difficulty & Procedure

• Difficulty: 5 out of 5 (Professional Only)
• DIY Feasible: No

Replacing a Gladiator's bedside panel is a major body shop operation that is not feasible for a DIY mechanic. The original panel must be carefully cut away from the bed structure. The process involves drilling out spot welds and cutting through factory adhesives and metal. The new panel is then fitted and attached using a combination of structural adhesives and welding (weld-bonding), as recommended by the manufacturer. After the panel is secured, the welds are ground down, a thin layer of body filler may be used to smooth the seams, and the entire panel must be primed, painted to match the vehicle's color, and clear-coated. One owner reported a repair bill of $3,500 for a similar replacement, including parts and labor.

OEM Part Numbers

The part number suffix (e.g., AA, AB, AC) denotes revisions, but later versions typically supersede earlier ones and are interchangeable. Always confirm fitment with your vehicle's VIN.

Frequently Asked Questions (FAQ)