Special Application Services
• Allison Transmission™ Vehicles Only: Replace external transmission filter at first engine oil change only.
• Vehicles with Dual Wheels: Check dual wheel nut torque at 160 km/100 mi, 1 600 km/ 1,000 mi and 9 700 km/6,000 mi.
• Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/ 3,000 mi.
• Have underbody flushing service performed once a year.
See also:
Removing the Spare Tire and Tools
To access the spare tire and tools:
1. Open the liftgate. See Liftgate on page 2‑9.
2. Lift the load floor up.
Coin/Pierce Jack with One-Piece Wrench
A. Extension
B. Wheel Wrench
C. Jack ...
Service Vehicle Messages
SERVICE AC SYSTEM
This message is displayed if there is a problem with the air conditioning system.
Take the vehicle to your dealer for service.
SERVICE POWER STEERING
This message is displayed i ...
Lumbar Adjustment
Power Lumbar
Eight-Way Power Seat Shown, Four-Way Similar
A. Lumbar Switch
If available, press and hold the front or rear of the switch (A) to increase
or decrease lumbar support. Release the s ...





