Removal (HO2S 1)

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

HO2S 1 is located in exhaust manifold.

Disconnect negative battery cable.
Remove the exhaust manifold heat shield. See Fig 1.
Disconnect HO2S 1 harness connector.
Carefully remove HO2S 1 from exhaust manifold. See Fig 2.

Fig 1: Removing Exhaust Manifold Heat Shield

Courtesy of GENERAL MOTORS CORP.

Fig 2: Removing HO2S 1

Courtesy of GENERAL MOTORS CORP.