
WARNING LIGHTS AND CHIMES
Check engine
Your vehicle is equipped with a
computer that monitors the engine's
emission control system. This
system is commonly known as the
On Board Diagnostics System (OBD
II). This OBD II system protects the environment by ensuring that your
vehicle continues to meet government emission standards. The OBD II
system also assists the service technician in properly servicing your
vehicle.
TheCheck Engineindicator light illuminates when the ignition is first
turned to the ON position to check the bulb. If it comes on after the
engine is started, one of the engine's emission control systems may be
malfunctioning. The light may illuminate without a driveability concern
being noted. The vehicle will usually be drivable and will not require
towing.
What you should do if the check engine light illuminates
Light turns on solid:
This means that the OBD II system has detected a malfunction.
Temporary malfunctions may cause yourCheck Enginelight to
illuminate. Examples are:
1. The vehicle has run out of fuel. (The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the fuel.
CHECK
ENGINE
Instrumentation
10

Drive± Not shown on the display. Activate by pressing the transmission
control switch on the end of the gearshift lever with the gearshift in
the
(Overdrive) position. The TCIL will illuminate on the instrument
cluster. Transmission operates in gears one through four. Drive (O/D
OFF) provides more engine braking than
(Overdrive) and is useful
whenever driving conditions (i.e., city traffic, hilly terrain, etc.) cause the
transmission to excessively shift between
(Overdrive) and other
gears. Deactivate
(Overdrive) when:
²driving with a heavy load.
²towing a trailer up or down steep hills.
²additional engine braking is desired. If towing a trailer, refer to
Driving while you towin theTrailer Towingsection.
To return to
(Overdrive) mode, press the transmission control
switch. The TCIL will no longer be illuminated.
Each time the vehicle is started, the transmission will automatically
return to normal
(Overdrive) mode.
2 (Second)
Use 2 (Second) to start-up on
slippery roads or to provide
additional engine braking on
downgrades.
1 (First)
Use 1 (First) to provide maximum
engine braking on steep
downgrades. Upshifts can be made
by shifting to 2 (Second) or to
(Overdrive). Selecting 1 (Low) at
higher speeds causes the transmission to shift to a lower gear and will
shift to 1 (First) after the vehicle decelerates to the proper vehicle
speed.
Forced Downshifts
To gain acceleration in(Overdrive) or Drive (O/D OFF) when
passing another vehicle, push the accelerator to the floor. The
transmission will downshift to the appropriate gear: fourth, third, second
or first gear.
Driving
135

²GVW (Gross Vehicle Weight):Base curb weight plus payload
weight. The GVW is not a limit or a specification.
²GVWR (Gross Vehicle Weight Rating):Maximum permissable total
weight of the base vehicle, occupants, optional equipment and cargo.
The GVWR is specific to each vehicle and is listed on the Safety
Certification Label on the driver's door pillar.
²GAWR (Gross Axle Weight Rating):Carrying capacity for each axle
system. The GAWR is specific to each vehicle and is listed on the
Safety Certification Label on the driver's door pillar.
²GCW (Gross Combined Weight):The combined weight of the
towing vehicle (including occupants and cargo) and the loaded trailer.
²GCWR (Gross Combined Weight Rating):Maximum permissable
combined weight of towing vehicle (including occupants and cargo)
and the loaded trailer
²Maximum Trailer Weight Rating:Maximum weight of a trailer the
vehicle is permitted to tow. The maximum trailer weight rating is
determined by subtracting the vehicle curb weight for each
engine/transmission combination, any required option weight for trailer
towing and the weight of the driver from the GCWR for the towing
vehicle.
²Maximum Trailer Weight:Maximum weight of a trailer the loaded
vehicle (including occupants and cargo) is permitted to tow. It is
determined by subtracting the weight of the loaded trailer towing
vehicle from the GCWR for the towing vehicle.
²Trailer Weight Range:Specified weight range that the trailer must
fall within that ranges from zero to the maximum trailer weight rating.
Remember to figure in the tongue load of your loaded trailer when
figuring the total weight.
Do not exceed the GVWR or the GAWR specified on the
certification label.
Do not use replacement tires with lower load carrying capacities than the
originals because they may lower the vehicle's GVWR and GAWR
limitations. Replacement tires with a higher limit than the originals do
not increase the GVWR and GAWR limitations.
Driving
145

3. Subtract your loaded vehicle weight from the maximum GCWR on the
following charts. This is the maximum trailer weight your vehicle can tow
and must fall below the maximum shown under maximum trailer weight
on the chart.
TRAILER TOWING
Your vehicle may tow a class I, II or III trailer provided the maximum
trailer weight is less than or equal to the maximum trailer weight listed
for your engine and rear axle ratio on the following charts.
Your vehicle's load capacity is designated by weight, not by volume, so
you cannot necessarily use all available space when loading a vehicle.
Towing a trailer places an additional load on your vehicle's engine,
transmission, axle, brakes, tires and suspension. Inspect these
components carefully after any towing operation.
4x2 w/manual transmission
Engine Rear
axle
ratioMaximum
GCWR - kg
(lbs.)Maximum
trailer
weight - kg
(lbs.)Maximum
frontal
area of
trailer -
m
2(ft2)
Regular Cab w/6' box
2.3L All 2 177 (4 800) 753 (1 660) Equal to
frontal area
of vehicle
3.0L
(non-torsion bar
suspension)All 2 722 (6 000) 1 207 (2 660) 4.64 (50)
3.0L (torsion
bar suspension)All 2 722 (6 000) 1 152 (2 540) 4.64 (50)
4.0L
(non-torsion bar
suspension)All 3 175 (7 000) 1 624 (3 580) 4.64 (50)
4.0L (torsion
bar suspension)All 3 175 (7 000) 1 569 (3 460) 4.64 (50)
Driving
147

4x2 w/manual transmission
Regular Cab w/7' box
2.3L All 2 177 (4 800) 726 (1 600) Equal to
frontal area
of vehicle
3.0L All 2 722 (6 000) 1 179 (2 600) 4.64 (50)
4.0L All 3 175 (7 000) 1 597 (3 520) 4.64 (50)
SuperCab
2.3L All 2 177 (4 800) 671 (1 480) Equal to
frontal area
of vehicle
3.0L
(non-torsion bar
suspension)All 2 722 (6 000) 1 125 (2 480) 4.64 (50)
3.0L (torsion
bar suspension)All 2 722 (6 000) 1 052 (2 320) 4.64 (50)
4.0L
(non-torsion bar
suspension)All 3 175 (7 000) 1 542 (3 400) 4.64 (50)
4.0L (torsion
bar suspension)All 3 175 (7 000) 1 479 (3 260) 4.64 (50)
For high altitude operation, reduce GCW by 2% per 300 meters
(1 000 ft.) elevation.
For definition of terms used in this table seeVehicle Loadingearlier
in this chapter.
To determine maximum trailer weight designed for your particular
vehicle, seeCalculating the load your vehicle can carry/towearlier
in this chapter.
Maximum trailer weight is shown. The combined weight of the
completed towing vehicle (including hitch, passengers and cargo) and
the loaded trailer must not exceed the Gross Combined Weight Rating
(GCWR).
Driving
148

4x4 w/manual transmission
Engine Rear
axle
ratioMaximum
GCWR - kg
(lbs.)Maximum
trailer weight
- kg (lbs)Maximum
frontal area
of trailer -
m
2(ft2)
Regular Cab w/6' box
3.0L All 2 722 (6 000) 1 180 (2 380) 4.64 (50)
4.0L All 3 175 (7 000) 1 506 (3 320) 4.64 (50)
Regular Cab w/7' box
3.0L All 2 722 (6 000) 1 061 (2 340) 4.64 (50)
4.0L All 3 175 (7 000) 1 479 (3 260) 4.64 (50)
SuperCab
3.0L All 2 722 (6 000) 1 007 (2 220) 4.64 (50)
4.0L All 3 175 (7 000) 1 424 (3 140) 4.64 (50)
4.0L (FX4
package)All 3 175 (7 000) 1 234 (2 720) 4.64 (50)
For high altitude operation, reduce GCW by 2% per 300 meters (1 000
ft.) of elevation.
For definition of terms used in this table, seeVehicle loadingearlier
in this chapter.
To determine maximum trailer weight designed for your vehicle, see
Calculating the load your vehicle can carry/towearlier in this
chapter.
Maximum trailer weight is shown. The combined weight of the
completed towing vehicle (including hitch, passengers and cargo) and
the loaded trailer must not exceed the Gross Combined Weight Rating
(GCWR).
Driving
149

4x2 w/automatic transmission
SuperCab
3.0L
(non-torsion
bar suspension)All 3 402 (7 500) 1 787 (3 940) 4.64 (50)
3.0L (torsion
bar suspension)All 3 402 (7 500) 1 715 (3 780) 4.64 (50)
4.0L
(non-torsion
bar suspension)All 4 309 (9 500) 2 667 (5 880) 4.64 (50)
4.0L (torsion
bar suspension)All 4 309 (9 500) 2 595 (5 720) 4.64 (50)
For high altitude operation, reduce GCW by 2% per 300 meters
(1 000 ft.) elevation.
For definition of terms used in this table seeVehicle Loadingearlier
in this chapter.
To determine maximum trailer weight designed for your particular
vehicle, seeCalculating the load your vehicle can carry/towearlier
in this chapter.
Maximum trailer weight is shown. The combined weight of the
completed towing vehicle (including hitch, passengers and cargo) and
the loaded trailer must not exceed the Gross Combined Weight Rating
(GCWR).
Driving
151

4x4 w/automatic transmission
Engine Rear
axle
ratioMaximum
GCWR - kg
(lbs.)Maximum
trailer
weight - kg
(lbs.)Maximum
frontal area
of trailer -
m
2(ft2)
Regular Cab w/6' box
3.0L All 3 402 (7 500) 1 751 (3 860) 4.64 (50)
4.0L All 4 309 (9 500) 2 622 (5 780) 4.64 (50)
Regular Cab w/7' box
3.0L All 3 402 (7 500) 1 724 (3 800) 4.64 (50)
4.0L All 4 309 (9 500) 2 595 (5 720) 4.64 (50)
SuperCab
3.0L All 3 402 (7 500) 1 669 (3 680) 4.64 (50)
4.0L All 4 309 (9 500) 2 540 (5 600) 4.64 (50)
4.0L (FX4
package)All 4 309 (9 500) 2 350 (5 180) 4.64 (50)
For high altitude operation, reduce GCW by 2% per 300 meters
(1 000 ft.) of elevation.
For definition of terms used in this table, seeVehicle loadingearlier
in this chapter.
To determine maximum trailer weight designed for your vehicle, see
Calculating the load your vehicle can carry/towearlier in this
chapter.
Maximum trailer weight is shown. The combined weight of the
completed towing vehicle (including hitch, passengers and cargo) and
the loaded trailer must not exceed the Gross Combined Weight Rating
(GCWR).
Do not exceed the GVWR or the GAWR specified on the
certification label.
Towing trailers beyond the maximum recommended gross trailer
weight could result in engine damage, transmission/axle damage,
structural damage, loss of control, and personal injury.
Driving
152