REPLACEMENT INTERVALS

Component

Miles

Air Filter

⁽¹⁾ 30,000

Accessory Drive Belt ⁽²⁾

All Models

150,000

Automatic Transaxle/Transmission Fluid

CTS

⁽³⁾

DeVille & Seville

⁽⁴⁾

Engine Coolant ⁽⁵⁾

⁽⁶⁾

Fuel Filter

CTS

100,000

Deville & Seville

⁽⁷⁾

Oil & Filter

All Models

⁽⁸⁾

Spark Plugs

All Models

100,000

Timing Belt

All Models

⁽⁹⁾

⁽¹⁾	Check every 15,000, replace as necessary.

⁽²⁾	Check and replace as necessary.

⁽³⁾	Fluid and filter do not require changing. If used under severe service conditions, replace every 50,000 miles.

⁽⁴⁾	Under normal service conditions, replace when CHANGE TRANS FLUID message is displayed on driver's information center. If used under severe service conditions, replace every 50,000 miles.

⁽⁵⁾	Use only DEX-COOL® coolant or equivalent silicate-free coolant.

⁽⁶⁾	Replace at 60 months or 150,000 miles, whichever occurs first.

⁽⁷⁾	There is no service interval for fuel filter replacement. Replace a restricted fuel filter.

⁽⁸⁾	Replace as indicated by oil life monitor or every 12 months, whichever occurs first. If the system is ever reset accidentally, you must change oil at 3000 mi (5000 km) since last oil change.

⁽⁹⁾	Replace every 100,000 miles or 96 months, whichever comes first.

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.

Safety Warning

Service Intervals & Specifications

Use the Manual With the Right Hardware

When to See a Mechanic

Safety Warning

Service Intervals &amp; Specifications

Use the Manual With the Right Hardware

When to See a Mechanic

Service Intervals & Specifications