Jeep GRAND CHEROKEE 2021 Owner's Manual page 334

332 SERVICING AND MAINTENANCE
Mileage or time passed (whichever comes
first)
Or Years:
Or Kilometers:
Flush and replace the engine coolant at
10 years or 150,000 miles (240,000 km)
whichever comes first.
Replace accessory drive belt.
Inspect accessory drive belt tensioner and
pulley, replace if necessary.
Change transfer case fluid.
Replace PCV valve.
1. The spark plug change interval is mileage based only, yearly intervals do not apply.
You can be badly injured working on or around a motor vehicle. Do only service work for which you have the knowledge and the right equipment. If

you have any doubt about your ability to perform a service job, take your vehicle to a competent mechanic.
Failure to properly inspect and maintain your vehicle could result in a component malfunction and effect vehicle handling and performance. This

could cause an accident.
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WARNING!
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