The wiring circuits in your vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusible thermal links. This greatly reduces the chance of fires caused by electrical problems.
Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating.
Spare fuses and a fuse puller are located in the underhood fuse block. You can remove fuses with the fuse puller. Remember to replace any of the spare fuses you use, so you will have some if you ever need them again.
If you ever have a problem on the road and don't have a spare fuse, you can borrow one that has the same amperage. Just pick some feature of your vehicle that you can get along without - like the radio or cigarette lighter - and use its fuse, if it is the correct amperage. Replace it as soon as you can.
There are two fuse blocks in your vehicle: one is inside the vehicle and one is in the engine compartment.
Instrument Panel Fuse Block
The fuse block is located on the lower portion of the instrument panel on the driver's side.
Fuse/Circuit Breaker | Usage |
|---|---|
1 | Stop/Turn/Hazard Lamps, Center High Mounted Stop Lamp, Anti-Lock Brakes |
2 | Radio Accessory, Rear Seat Audio Controls |
3 | Courtesy Lamps, Glove Box Lamp, Dome Reading Lamps, Vanity Mirror Lamps, Courtesy Lamps |
4 | Daytime Running Lamps Relay, Instrument Panel Cluster |
5 | Rear Defogger |
6 | Cruise Module, Truck Body Control Module, Instrument Panel Cluster, Cruise Control Switch, Electrochromic Mirror |
7 | Power Outlets, Subwoofer Amplifier |
8 | Crank Circuit Fuse, Park/Neutral Switch, Starter Enabler Relay |
9 | License Plate Lamp, Taillamps, Parking Lamps, Ashtray Lamp, Panel Lights, Trailer Taillamps, Front and Rear Sidemarker Lamps, Door Switch Illumination, Headlamp Switch Illumination, Rear Seat Audio Illumination, Truck Body Control Module |
10 | Air Bag System |
11 | Not Used |
12 | Blower Motor, Rear Air Conditioning Relay Coil, Front Cont. Temp. Door Motor, HI Blower Relay, Defogger Timer Coil |
13 | Cigarette Lighter, Door Lock Switches, Dutch Door Release Module |
14 | Cluster Illumination, Climate Controls, Chime Module, Radio Illumination, Rear Heat Switch Illumination, Rear Wiper/Washer Switch Illumination, Rear Liftgate Switch Illumination, Remote Cassette Illumination, Overhead Console, Truck Body Control Illumination |
15 | Truck Body Module, Headlamp Relay |
16 | Front Turn Signals, Rear Turn Signals, Trailer Turn Signals, Back-Up Lamps, Brake Transmission Shift Interlock Solenoid |
17 | Front Wipers, Front Washer Pump |
18 | VCM-Ign 3, VCM-Brake, Cruise Stepper Motor Signal, ATC Module |
19 | Instrument Panel Radio: ATC (Main Feed), 2000 Series (Standby) |
20 | PRNDL/Odometer, Shift A and Shift B Solenoids, 3-2 Downshift Solenoid, Instrument Panel Cluster, VCM Module |
21 | Powr Adjust Mirrors |
22 | Not Used |
23 | Rear Wiper, Rear Washer Pump |
24 | Not Used |
A | (Circuit Breaker) Power Door Lock Relay, 6-Way Power Seats |
B | (Circuit Breaker) Power Windows |
Underhood Fuse Block
The underhood fuse block is located toward the rear of the engine compartment on the driver's side of the vehicle.
Lift the hood and open the cover to gain access to this fuse block.
A fuse puller is included in the underhood fuse block. You will also find spare fuses.
Feed | Usage |
|---|---|
AUX B | Upfitter Battery Feed |
AUX A | Upfitter Accessory Feed |
Relays | Usage |
|---|---|
A/C Relay (Rear Heat and A/C) | Rear/Heat and Air Conditioning |
Upfitter-ACCY Relay | Upfitter Accessory |
Starter Enable Relay | Starter |
A/C Enable Relay | Air Conditioning |
Headlamps Relay | Headlamps |
Fuel Pump Relay | Fuel Pump |
Fuse/Circuit Breaker | Usage |
|---|---|
UPFITTER-BATT | Upfitter Battery Power Stud, Trailer Wiring Harness |
UPFITTER-ACCY | Upfitter Accessory Relay |
Spare | Not used |
Spare | Not used |
Spare | Not used |
ECM-1B | Fuel Pump Relay and Motor, VCM, Oil Pressure Switch/Sender |
HORN | Horn Relay and Horn |
A/C COMP | Air Conditioning Enable Relay and Compressor |
RR HTR/AC | Rear Heater and Air Conditioning |
ATC | Active Transfer Case-L Van |
FRT HVAC | Front Heater and Air Conditioning |
ENG-I | Oxygen Sensors, Camshaft Position Sensor, Mass Air Flow Sensor, Evaporative Emission Canister Vent Solenoid |
IGN-E | Air Conditioning Enable Relay Coil |
ECM-I | Fuel Injectors 1-6, Crankshaft Position Sensot, VCM, Coil Driver Module (EST), Ignition Coil |
Blank | Not Used |
RH HDLMP | Right Headlamp |
LH Headlamp | Left Headlamp |
Blank | Not Used |
Blank | Not Used |
DIODE-1 | Air Conditioning |
Blank | Not Used |
Blank | Not Used |
Blank | Not Used |
LIGHTING | Courtesy Fuse, Power Adjust Mirrors Fuse, Truck Body Control Battery Fuse |
BATT | Power Accessory Circuit Breaker, Stop/Hazard Fuse, Auxiliary Power Fuse, Cigarette Lighter Fuse, Radio Battery Fuse |
IGN A | Starter Relay, Ignition Switch |
IGN B | Ignition Switch |
ABS | Electronic Brake Control Module |
Blank | Not Used |
RAP | Radio Accessory, Power Windows |
HTD MIR/RR DEFOG | Rear Window Defogger,Climate Control Head |
