Rear Outer Wheelhouse Replacement Sedan

Important: The sedan outer rear wheelhouse can be replaced at factory seams. Both models have a beltline reinforcement that overlaps a portion of the wheelhouses. Remove the reinforcement on sedan models according to recommended procedures. On coupe models, templates have been developed to ensure proper wheelhouse installation on coupe models.

1. Remove all related panels and components including the back glass.
2. From inside the vehicle, pull back and protect wiring along inner wheelhouse.
3. Locate and drill out six welds securing beltline reinforcement to the quarter inner assembly. Drill through one layer ONLY.
4. Locate and drill out welds at factory seams along the perimeter of the wheelhouse flange.
5. Remove the damaged wheelhouse panel.

1. Drill 8 mm (5/16 in) holes on the service part, every 40 mm (1 1/2 in).
2. Prepare the mating surfaces.
3. Apply suitable weld-through primer.
4. Position the service part and check for proper fit.

Important: Outer wheelhouse positioning may require dry-fitting of the quarter outer panel.

5. Clean and prepare welded surfaces.

Important: Do not combine paint systems. Prior to refinishing, refer to GM 4901M-2000 "GM Approved Refinish Materials" for recommended products. Do not combine paint systems. Refer to paint manufacturer's recommendations.

6. Apply approved anti-corrosion primer.
7. Apply sealers and sound deadener materials.
8. Refinish as necessary.
9. Install all related panels and components.

Rear Outer Wheelhouse Replacement Coupe

Important: The sedan outer rear wheelhouse can be replaced at factory seams. Both models have a beltline reinforcement that overlaps a portion of the wheelhouses. Remove the reinforcement on sedan models according to recommended procedures. On coupe models, templates have been developed to ensure proper wheelhouse installation on coupe models.

1. Remove all related panels and components including the back glass.
2. From inside the vehicle, pull back and protect wiring along inner wheelhouse.
3. Locate and drill out six welds securing beltline reinforcement to the quarter inner assembly. Drill through one layer ONLY.
4. Locate and drill out welds at factory seams along the perimeter of the wheelhouse flange.
5. Remove the damaged wheelhouse panel.

1. Drill 8 mm (5/16 in) holes on the service part, every 40 mm (1 1/2 in).
2. Prepare the mating surfaces.
3. Apply suitable weld-through primer.
4. Position the service part and check for proper fit.

Important: Outer wheelhouse positioning may require dry-fitting of the quarter outer panel.

5. Clean and prepare welded surfaces.

Important: Do not combine paint systems. Prior to refinishing, refer to GM 4901M-2000 "GM Approved Refinish Materials" for recommended products. Do not combine paint systems. Refer to paint manufacturer's recommendations.

6. Apply approved anti-corrosion primer.
7. Apply sealers and sound deadener materials.
8. Refinish as necessary.
9. Install all related panels and components.