Exhaust Seal Replacement With L9H, LY2, LY5 or LFA
Removal Procedure
Warning: Refer to Protective Goggles and Glove Warning in the Preface section.
Warning: Refer to Exhaust Service Warning in the Preface section.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
- Remove the oil pan skid plate , if equipped. Refer to
Oil Pan Skid Plate Replacement.
- Remove heated oxygen (HO2S) (1, 2 and 3) and disconnect the heated oxygen (HO2S) sensors (4 and 5) harness connectors.
- Remove the catalytic converter pipe to the exhaust manifold nuts (1) and lower the converter.
- Remove the exhaust seals (2 and 3) and discard.
Installation Procedure
- Install NEW exhaust manifold seals (2 and 3).
- Install the catalytic converter pipe to the exhaust manifolds.
Caution: Refer to Fastener Caution in the Preface section.
- Install the catalytic converter pipe to exhaust manifold nuts (1) and tighten to
50 N·m (37 lb ft).
- Install the transmission crossmember. Refer to
Transmission Support Crossmember Replacement.
- Inatall heated oxygen (HO2S) (1, 2 and 3) and connect the heated oxygen (HO2S) sensors (4 and 5) harness connectors.
- Install the transmission crossmember. Refer to
Transmission Support Crossmember Replacement.
- Install the oil pan skid plate if equipped. Refer to
Oil Pan Skid Plate Replacement.
- Lower the vehicle.
- Inspect for exhaust leaks.
Exhaust Seal Replacement With L92
Removal Procedure
Warning: Refer to Protective Goggles and Glove Warning in the Preface section.
Warning: Refer to Exhaust Service Warning in the Preface section.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
- Remove the oil pan skid plate , if equipped. Refer to
Oil Pan Skid Plate Replacement.
- Disconnect the heated oxygen (HO2S) sensors harness connectors. Refer to
Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 ,
Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 ,
Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 and
Heated Oxygen Sensor Replacement - Bank 2 Sensor 2.
- Remove the catalytic converter pipe to the exhaust manifold nuts (1).
- Remove the exhaust seals (2 and 3) and discard.
Installation Procedure
- Install NEW exhaust manifold seals (2 and 3).
- Install the catalytic converter pipe to the exhaust manifolds.
Caution: Refer to Fastener Caution in the Preface section.
- Install the catalytic converter pipe to exhaust manifold nuts (1) and tighten to
50 N·m (37 lb ft).
- Install the transmission crossmember. Refer to
Transmission Support Crossmember Replacement.
- Connect the heated oxygen (HO2S) sensors harness connectors. Refer to
Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 ,
Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 ,
Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 and
Heated Oxygen Sensor Replacement - Bank 2 Sensor 2.
- Install the oil pan skid plate if equipped. Refer to
Oil Pan Skid Plate Replacement.
- Lower the vehicle.
- Inspect for exhaust leaks.