Jeep GRAND CHEROKEE L 2023 Owner's Manual page 335

Mileage Or Time Passed
(Whichever Comes First)
Or Years:
Or Kilometers:
Inspect accessory drive belt tensioner
and pulley, replace if necessary.
Change transfer case fluid - Normal
Usage.
Change transfer case fluid — Severe
Usage (police, taxi, fleet, off-road, or
frequent trailer towing.)
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 affect vehicle handling and performance. This could cause

an accident.
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WARNING!
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SERVICING AND MAINTENANCE
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