Your vehicle may have a low-back or high-back air suspension seat. There are several ways to adjust the seat.
Fore-and-Aft Adjustment
If your vehicle has this lever it is located underneath the front of the driver's seat.
To slide the seat forward or rearward, move the lever toward the outboard side of the seat. The seat will lock in at 1/2 inch (1.5 cm) increments. Try to move the seat with your body to be sure the seat is locked in place.
Height Adjustment
Seat Height Adjustment Lever
On a vehicle with an air suspension seat height adjustment lever, it is located on the front inboard side of the seat.
To adjust the height of the air suspension seat, pull the lever up to inflate. Push the lever down to deflate.
Your seat cushion may also be able to be raised or lowered.
If your vehicle has this feature, the seat cushion height adjustment handle is located underneath the front of the seat.
To adjust the height of the cushion, lift the handle up and pull it forward. You can choose between two settings.
Lumbar Adjustment
Lumbar Adjustment Knob
If your vehicle has a lumbar adjustment knob, it is located on the inboard side of the driver's seatback, or on the outboard side of the passenger's seatback.
For more support to your lower back, turn the lumbar adjustment knob clockwise. To decrease the amount of lumbar support, turn the knob counterclockwise.
Seatback Adjustment
Your vehicle has a seatback adjustment control located on the outboard side of the seat.
Recline the seatback by turning the control counterclockwise.
Return the seatback to an upright position by turning the control clockwise.
Caution: Sitting in a reclined position when your vehicle is in motion can be dangerous. Even if you buckle up, your safety belts cannot do their job when you are reclined like this.
The shoulder belt cannot do its job. In a crash, you could go into it, receiving neck or other injuries. The lap belt cannot do its job either. In a crash the belt could go up over your abdomen. The belt forces would be there, not at your pelvic bones. This could cause serious internal injuries. For proper protection when the vehicle is in motion, have the seatback upright. Then sit well back in the seat and wear your safety belt properly.Chugger-Snubber Lock-Out Feature
If your vehicle has this feature, the handle is located on the outboard side of the driver's and passenger's seats.
Move the handle down to reduce any backslap experienced while in tractor/trailer operation or while operating a dump truck application.
