Jeep Grand Cherokee 2020 Owner's Manual page 324

322 SERVICING AND MAINTENANCE
Miles:
Or Months:
Or Kilometers:
Replace the spark plugs
2
– 6.4L Engine.
Flush and replace the engine
coolant at 120 months if not done
at 150,000 miles
(240,000 km).
1. The spark plug change interval is mileage based only, monthly intervals do not apply.
2. The spark plug change interval is mileage based only, monthly intervals do not apply.
WARNING!
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.
WARNING! (Continued)
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.
(Continued)
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