How to Replace an LT1 Exhaust System
- 1). Raise the vehicle onto jack stands. Lift up on the front and rear jack points located on the front and rear crossmember. Place a jack stand underneath each of the pinch welds in each corner of the vehicle and lower the vehicle onto the jack stands. You'll need to work on one end of the car at a time (raise the front of the car on jack stands, then raise the rear).
- 2). Place another set of jack stands underneath the exhaust system directly under the exhaust piping.
- 3). Remove the bolts that connect the exhaust piping to the manifold at the engine.
- 4). Remove the electrical leads running to the O2 sensors on the exhaust piping.
- 5). Slide the exhaust piping off the rubber hangers on the underside of the vehicle.
- 6). Install the new exhaust. Installation is the reverse of removal. Make sure that the exhaust piping sits securely onto the rubber hangers on the underside of the vehicle before bolting the piping to the manifold and reconnecting the O2 sensor wiring for the new exhaust.
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