Acadia FWD V6-3.6L (2007)
Firewall: Service and Repair
Plenum Lower Panel Replacement
Plenum Lower Panel Replacement
Description
The plenum lower is formed from laminated steel. This steel is constructed by bonding 2 pieces of cold rolled steel (1) with a viscoeleastic layer of
adhesive (2). MIG welding laminated steel does not meet GM Corporate standards for structural integrity.
If the lower plenum is damaged beyond repair, a mild steel service replacement panel is available. Once installed, the mild steel replacement panel
requires a sound deadening material to duplicate the laminated steel characteristics.
Removal Procedure
Caution: Refer to Approved Equipment for Collision Repair Caution.
1. Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling.
2. Disconnect the negative battery cable.
3. Remove all related panels and components.
4. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and
Repair.
5. Visually inspect the damaged area. Repair as much of the damage as possible to factory specifications. Refer to Dimensions - Body.
6. Remove the upper plenum panel.
