Rocker Panel

Complete removal and replacement of the rocker panel on a first-generation Dodge Viper, including door removal, exterior trim removal, and welded or bonded panel replacement.

Warnings

Tools required

Parts

• Rocker panel (left or right side) × 1 — Use OEM specification
• Door seal (lower) × 1 — Use OEM specification
• Side sill trim clips × 8 — Use OEM specification
• Weld-through primer × 1 — 3M 05916 or equivalent
• Panel bonding adhesive × 1 — 3M 08115 or equivalent
• Seam sealer × 1 — 3M 08308 or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake.
2. Disconnect negative battery cable to prevent electrical hazards during welding.
3. Raise vehicle and support securely on jack stands at front and rear jacking points on the side opposite the work area.
4. Remove wheel on the affected side to provide access to lower rocker panel edge.
5. Photograph the existing rocker panel installation, door gaps, and trim alignment for reference during reassembly.
6. Place protective covers over interior carpeting and seats on the affected side.
7. Verify replacement rocker panel fitment by test-fitting before removing original panel.

Procedure

1. 1

   Remove side sill trim and door seals
   Starting at the front of the rocker panel, carefully pry the lower door seal away from the rocker panel lip. The seal is retained by friction and clips. Work toward the rear, releasing the seal completely. Next, locate and remove the side sill trim panel inside the door opening. The trim is retained by push clips along its length. Use a trim tool to release each clip, working from one end to the other. Set aside the trim and seal for reuse or replacement.
2. 2

   Remove door assembly
   Open the door fully and support it with a padded jack or assistant. Disconnect any electrical connectors at the door hinge area if present. Using a socket, remove the door hinge bolts at both the upper and lower hinges where they attach to the door. Count and note the number of bolts at each hinge (verify against factory service documentation) before removal. Carefully lift the door away from the vehicle and store it in a safe location on padded supports. Mark the hinge positions on the door frame before removal to aid realignment during installation.
3. 3

   Remove exterior rocker panel trim
   Inspect the lower exterior body side for any removable rocker panel trim or molding. On the 1992 Viper, the side sill area may have decorative trim held by clips or small fasteners. Check for fasteners at the front and rear ends of any trim piece. Remove any identified fasteners and carefully pry the trim away from the body using a trim tool. If no separate trim is present, proceed to the next step.
4. 4

   Mark and assess rocker panel attachment points
   Examine the rocker panel to determine its attachment method. The rocker panel is typically spot-welded or bonded to the inner structure at multiple points along its length. Use a paint thickness gauge or visual inspection to identify spot weld locations, which typically appear as small dimples or raised areas spaced approximately every 2-3 inches along the top flange, bottom flange, and at front/rear joints. Mark these locations with a paint marker. Assess whether the panel is also bonded with adhesive by checking for adhesive residue at panel edges. Do NOT assume spot welds — the Viper rocker/sill panels are composite. Identify the actual factory attachment method (bonding adhesive and/or mechanical fasteners) by inspecting panel edges and consulting factory body repair documentation before proceeding.
5. 5

   Drill out spot welds
   Do NOT drill for spot welds — the composite rocker/sill panel is not spot-welded. Separate the panel per composite repair methods (cutting the adhesive bond and/or removing mechanical fasteners) as specified in factory body repair documentation. Center the cutter on each weld and drill only deep enough to separate the outer panel from the inner structure without drilling through the inner panel. Work systematically from front to rear along both the upper door opening flange and the lower rocker edge. Expect to remove approximately 15-20 spot welds along the rocker panel length. After drilling, use a small chisel or punch to verify each weld is fully separated.
6. 6

   Cut panel adhesive and separate rocker panel
   If the panel is bonded with adhesive in addition to spot welds, use a reciprocating saw with a fine-tooth metal blade or a pneumatic cutoff tool with a thin cutoff wheel to carefully cut through the adhesive bond. Work along the upper and lower flanges where the panel meets the structure. Use caution to avoid cutting into the inner structural members. Once all welds and adhesive are released, carefully pry the old rocker panel away from the vehicle. Remove any remaining weld nuggets or adhesive from the mounting surfaces on the body structure using a grinder or wire wheel.
7. 7

   Prepare mounting surfaces and inspect structure
   Thoroughly clean all mounting surfaces where the new rocker panel will attach. Grind away any remaining spot weld material, corrosion, or old adhesive until bare metal is exposed. Inspect the inner rocker structure and door frame for damage, corrosion, or deformation. Any structural damage must be repaired before installing the new panel. Use a wire brush or grinding disc to clean an area approximately 1 inch wide along all bonding and welding surfaces. Wipe surfaces with a wax and grease remover to ensure proper adhesion and weld quality.
8. 8

   Apply weld-through primer to mating surfaces
   Prepare the composite bonding surfaces per the adhesive manufacturer's instructions (scuff/abrade and clean with the specified prep solvent). Do NOT use weld-through primer — there is no welding on the composite panel. This includes the flanges on the inner rocker structure and door frame. Use a brush or spray to apply a thin, even coat. Weld-through primer prevents corrosion between panels while still allowing proper electrical conductivity for welding. Allow the primer to dry according to manufacturer specifications, typically 15-30 minutes. Do not apply primer to surfaces where panel adhesive will be used; adhesive requires clean, bare metal.
9. 9

   Test-fit and align new rocker panel
   Position the new rocker panel onto the vehicle without fastening. Check the fit at all edges, particularly at the front and rear where it meets the fender and quarter panel, and along the upper edge where it meets the door frame. Use clamps to hold the panel in position and verify that door gaps will be correct by test-fitting the door if necessary. The panel should sit flush with adjacent body panels with consistent gaps. Make any necessary adjustments to the panel or mounting surfaces. Once satisfied with alignment, mark the panel position with a marker or tape for reference.
10. 10

    Apply panel bonding adhesive
    If the original panel was bonded with adhesive, apply panel bonding adhesive to the mounting flanges on the vehicle structure according to the adhesive manufacturer's instructions. Apply a continuous 1/4-inch bead of adhesive along the inner rocker flange where the new panel will contact. Work in sections to prevent the adhesive from skinning over before the panel is positioned. Panel adhesive provides additional structural rigidity and seals against moisture intrusion.
11. 11

    Install and clamp new rocker panel
    Carefully position the new rocker panel onto the vehicle, aligning it with the reference marks made during test-fitting. Press the panel firmly against the adhesive and use locking pliers or panel clamps every 4-6 inches along the length to hold it securely in position. Verify alignment at all edges before proceeding. The panel should be held firmly but not over-clamped, which could distort the metal. Double-check door gaps by test-fitting the door if necessary.
12. 12

    Spot-weld rocker panel to structure
    Bond the composite rocker/sill panel to the structure using the specified structural panel adhesive and any factory mechanical fasteners. Do NOT MIG weld or drill plug-weld holes — the composite panel cannot be welded. Follow the adhesive manufacturer's cure time and clamping instructions. upper and lower flanges. Make approximately 15-20 welds total. Allow each weld to cool before proceeding to the next to prevent warping. Alternate between upper and lower flanges to distribute heat evenly.
13. 13

    Grind welds and finish panel edges
    After the adhesive has fully cured, block-sand and finish the composite panel joints using body filler as needed to achieve a smooth surface ready for primer and paint. Do NOT grind welds — there are none on the composite panel. Take care not to grind through the panel thickness. Grind any excess metal or weld spatter along panel edges where the rocker meets adjacent panels. The goal is a smooth surface ready for body filler and paint. Inspect all welds visually for complete penetration and consistent appearance.
14. 14

    Apply seam sealer and corrosion protection
    Apply seam sealer to all joints where the new rocker panel meets other body panels, particularly at the front and rear ends and along the upper door frame edge. Use a seam sealer gun or cartridge to apply a smooth bead that matches the factory appearance. Seam sealer prevents water intrusion and corrosion. Also apply seam sealer to any exposed weld backside areas accessible from underneath the vehicle. Allow sealer to cure according to manufacturer instructions, typically 30-60 minutes.
15. 15

    Reinstall door assembly
    With an assistant or padded jack supporting the door, position the door onto the hinges, aligning with the marks made during removal. Start the door hinge bolts by hand at both upper and lower hinges. Once all bolts are started, tighten them evenly to the factory-specified door hinge bolt torque (verify exact value in factory service documentation — do not guess) using a torque wrench. Check door alignment and operation by opening and closing the door several times. Adjust if necessary by loosening hinge bolts and repositioning the door. Reconnect any electrical connectors at the hinge area.
16. 16

    Install door seals and interior trim
    Press the lower door seal into position along the rocker panel lip, starting at the front and working rearward. Ensure the seal is fully seated in its channel and that all clips engage properly. Next, install the interior side sill trim panel by aligning it with its mounting points and pressing firmly to engage the push clips. Verify that the trim is secure along its entire length and sits flush with surrounding interior panels.

Reassembly

1. After completing the rocker panel installation, perform body filler application and sanding as needed to achieve a smooth surface for painting.
2. Prime and paint the new rocker panel to match the vehicle finish, blending into adjacent panels as necessary.
3. Reinstall the wheel and lower the vehicle from jack stands once all paint work is complete and cured.
4. Reconnect the negative battery cable after confirming all welding work is complete and all flammable materials are removed from the area.

Verification

• Inspect all welds visually for consistency and proper penetration. There should be no gaps between the new rocker panel and the body structure.
• Check door alignment and operation. The door should open and close smoothly with consistent gaps around the entire perimeter.
• Verify that the door seal sits properly along the rocker panel and there are no visible gaps that could allow water intrusion.
• Inspect seam sealer application at all panel joints to ensure complete coverage and proper appearance.
• Confirm that the rocker panel is flush with adjacent body panels (front fender and rear quarter panel) with consistent gaps.
• Test drive the vehicle after paint curing to verify that the structural repair has not affected vehicle rigidity or created any unusual noises or vibrations.

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