INTRODUCTION
This booklet is a supplement to the Owner ’s Manual
prepared with the assistance of service and engineering
specialists, and is intended to aid the operators of Special
Service vehicles (used in severe duty, high-mileage op-
erations) in understanding the operation and required
maintenance procedures for such vehicles. It covers
maintenance procedures for vehicles equipped with
heavy-duty packages. However, other vehicles operated
under the conditions listed below are also considered
“severe service” vehicles, and should be serviced and
maintained as prescribed in this booklet. You are urged to
read this publication and the Owner ’s Manual carefully.
This vehicle is equipped with a Vehicle Systems Interface
Module (VSIM), a 24-way connector and four additional
connectors. The VSIM and connectors allow the vehicle
to be upfitted with aftermarket equipment. For further
information, please refer to the upfitters information.Following the instructions and recommendations pro-
vided herein, will help assure safe and reliable operation
of your vehicle. After you have read the booklet, it should
be stored in the vehicle for convenient reference and
remain with the vehicle when sold.
When it comes to service, remember that your authorized
dealer knows your vehicle best, has factory-trained tech-
nicians and genuine MOPAR® parts, and cares about
your satisfaction.
RAM is a registered trademark of FCA US LLC.
4 INTRODUCTION
