Fuse box (fuses and their location)
| Fuse/Cb | Ampere rating [A] | Description |
| 1 | 30 | Heater/ air conditioner |
| 2 | 30 | Wiper/washer |
| 3 | 3 | Idle position switch (diesel) |
| 4 | 15 | Exterior lamps, instrument illumination, trailer exterior lamp relay, warning buzzer/chime module |
| 5 | 10 | Air bag restraint |
| 6 | 15 | Air conditioner clutch, diesel auciliary fuel selector, remote keyless entry |
| 7 | 15 | Turn lamps |
| 8 | 15 | Courtesy/dome/cargo lamps, e;ectric outside mirrors, keyless entry, speedometer, sun visior mirror illumination, warning buzzer/chime module |
| 9 | 25 | Power point |
| 10 | 4 | Instrument illumination |
| 11 | 15 | Radio, radio display dimmer |
| 12 | 20 Circuit breaker | Electronic shift motor 4-wheel drive, power door locks, power driver seat, power lumbar |
| 13 | 15 | Anti-lock brakes, brake shift interlock, electronic engine control, speed control, stop/hazard lamps, stop sense for electronic engine control |
| 14 | 20 Circuit breaker | Power windows |
| 15 | 20 | Anti-lock brakes |
| 16 | 20 | Cigarette lighter, generic scan tool |
| 17 | 10 | Disel indicators, electronic transmission, gauges, tachometer, warning buzzer/chime module, warning indicator |
| 18 | 10 | Air bag restraint, automatic day/night mirror, brake shift interlock, electronic shift module 4-wheel drive, speedometer, selectable RPM control (diesel), speed control (diesel) |
| Circuti protected | Size | Location |
| Headlamps & high beam indicator | 22A CB | Integral with headlamp switch |
| Windshield wiper and washer pump | 30A fuse | Fuse panel |
| Electronic brakes (trailer) | 30A maxi fuse | Power distribution box |
| Trailer lamps (relay feed) | 25A fuse | Power distribution box |
| Alternator, 95 A | 12 Ga. fuse link | At starting motor relay (gasoline engine) |
| Alternator 130 A | (2) 12 Ga. fuse links | At starting motor relay (diesel engine) |
| Powertrain control module | 20A maxi fuse | Power distribution box |
| Fuel pump | 20A maxi fuse | Power distribution box |
| Headlamp switch | 40A maxi fuse | Power distribution box |
| Diesel glow plugs | (2) 14 Ga. fuse links | At starting motor relay |
| Power windows | 20A CB | Fuse panel |
| Power door locks | 20A CB | Fuse panel |
| Hazard flasher | 15A fuse | Fuse panel |
| Trailer battery recharge feed | 30A maxi fuse | Power distribution box |
Power distribution box
| Fuse/CB/relay | Ampere rating [A] | Description |
| 1 | 20 | Audio power |
| 2 | (15) | Fog lamps, 200A alternator (diesel ambulance only) |
| 3 | 30 | Daytime running lamps (Canada only), headlamp flash-to-pass, horn |
| 4 | 25 | Trailer back-up lamps, trailer running lamps |
| 5 | 15 | Back-up lamps, daytime running lamp module (DRL) (Canada only), oxygen sensor heater, trailer battery charge relay |
| 6 | 10 | Trailer right-hand stop/turn lamp |
| 7 | 10 | Trailer left-hand stop/turn lamp |
| 8 | 30 maxi | Injector driver module |
| 9 | 30 (gas) | Powertrain control system |
| 20 (diesel) | ||
| 10 | 20 maxi | Instrument panel fuses: 15,18, starter relay coil |
| 11 | — | Not used |
| 12 | Diode | Powertrain control system relay coil |
| 13 | 50 maxi | Instrument panel fuse: 5,9,13 |
| 14 | — | Not used |
| 15 | 50 maxi | Instrument panel fuse: 1,7; power distribution box fuse 5 |
| 16 | 20 maxi | Fuel pump feed (gas engine) |
| 17 | 50 maxi | Alternator charge lamp, idle position switch (diesel), instrument panel fuse: 2,6, 11, 14, 17, power distribution box fuse 22 |
| 18 | 30 maxi | Trailer battery charge |
| 19 | 40 maxi | Headlamps |
| 20 | 50 maxi | Instrument panel fuses: 4,8,12,16 |
| 21 | 30 maxi | Trailer brake feed |
| 22 | 20 maxi (Gas) | Distribution pickup (gas engine), fuel line heater (diesl), glow plug controller (dieslel), ignition coil (gas engine), powertrain control system relay coil, thick film integrates (TFI) module (Gas engine) |
| 30 (diesel) | ||
| Relay 1 | Powertrain control system | |
| Realy 2 | Fuel pump (gas engine), injector driver module (IDM relay) (diesel) | |
| Relay 3 | Horn | |
| Relay 4 | Trailer tow lamps | |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.