Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 237 (ENGINE EXHAUST SYSTEM)REPAIR INSTRUCTIONSCATALYTIC CONVERTER REPLACEMENTREMOVAL PROCEDURE

2001 Chevrolet Cavalier LS, 2.4 T

Removal Procedure

2001 Chevrolet Cavalier LS, 2.4 TSECTION Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Do not over-flex or damage the flex decoupler joint when moving the flex decoupler joint from the normal mounting position. The flex decoupler joint will flex a maximum of six degrees which is equivalent to the pipes connected at the joint which move 1 inch for each foot length of pipe. A three foot pipe would move a maximum of three inches.

Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
Remove the post catalytic converter heated oxygen sensor.

Fig 1: View Of HO2S 2
Courtesy of GENERAL MOTORS CORP.
Support the three-way catalytic converter.
Remove the intermediate pipe bolts.

Fig 2: Exploded View Of Intermediate Pipe Bolts
Courtesy of GENERAL MOTORS CORP.
Remove the exhaust manifold nuts (3).

Fig 3: Locating Exhaust Manifold To Flex Decoupler Nuts
Courtesy of GENERAL MOTORS CORP.
Remove the three-way catalytic converter and seals.
Clean the flange surfaces.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.