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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 228 (Exhaust System) >> Repair Instructions >> Exhaust Muffler Replacement (LCV) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

WARNING:

Avoid contact with HOT components. Wear safety glasses and protective gloves to avoid personal injury.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (ATS)Lifting and Jacking the Vehicle (ATS-V) .
  2. Fig 1: Floor Panel Crossbar & Fasteners
    GM2790915Courtesy of GENERAL MOTORS COMPANY
  3. Remove the floor panel crossbar fasteners (1) and remove the floor panel crossbar (2).
  4. Fig 2: Exhaust Muffler, Catalytic Converter & Mounting Components
    GM2790901Courtesy of GENERAL MOTORS COMPANY
  5. Remove the catalytic converter fasteners (2) and detach the exhaust muffler (1) from the catalytic converter (4).
  6. Discard the exhaust gasket (3).
  7. Support the front muffler exhaust pipe with mechanics wire.
  8. Fig 3: Exhaust Muffler & Isolators
    GM2790917Courtesy of GENERAL MOTORS COMPANY
  9. Remove the exhaust muffler (2) from the exhaust isolators (1).
  10. Fig 4: Exhaust Muffler & Isolator
    GM2790916Courtesy of GENERAL MOTORS COMPANY
  11. With the aid of a second technician, remove the exhaust muffler (2) from the exhaust isolator (1).
  12. Fig 5: Exhaust Muffler
    GM2791937Courtesy of GENERAL MOTORS COMPANY
  13. Lower the exhaust muffler (1) to the floor.