FUSE PANEL LOCATION
The fuse block is located behind a cover in the dash to the left of the steering column.
Scheme 1
Fuse & Circuit Breaker Identification
- 1 - Horn/Dim 20 Amp Glove Box Light, Clock, Electric/Vanity Mirrors, Cigarette Lighter
- 2 - Tail Lps 20 Amp Light Switch, Parking Lights
- 3 - ECM B 10 Amp Electronic Control Module
- 4 - Gages 20 Amp Cruise Control, Ashtray Light
- 5 - Turn-B/U 20 Amp Ignition, Ignition Switch, Turn Signal Flasher, Back-Up Light Switch
- 6 - ECM 1 10 Amp Electronic Control Module, Ignition
- 7 - DRL 10 Amp Daytime Running Lights (Canada)
- 8 - Inst Lps 5 Amp Rear Air Conditioning Switch Light, Rear Auxiliary Heater Switch, Dome Light Switch, Cigarette Lighter, Convenience Tray Light, Foglight, Mirror Switch Light, Auxiliary Heater, Rear Air Conditioning
- 9 - Aux Htr A/C 25 Amp Auxiliary Heater & Air Conditioning
- 10 - Htr A/C 20 Amp Heater & Air Conditioning
- 11 - Pwr Wdo 30 Amp (Circuit Breaker) Power Windows
- 12 - 20 Amp Fuel Pump
- 13 - Pwr Acc 30 Amp (Circuit Breaker) Power Seat, Power Door Locks
- 14 - Stop-Haz 20 Amp Hazard Flasher
- 15 - Radio 10 Amp Radio
- 16 - Wiper 25 Amp Windshield Washer/Wiper Motor & Switch
| Year & Engine (1) | Model Number | |
|---|---|---|
| 1988-92 | ||
| 4.3L | (2) | |
| 5.0L | (2) | |
| 5.7L | (2) | |
| 7.4L | (2) | |
| 6.2L/6.5L Diesels | (2) | |
| (1) All diesel-powered vehicles use 2 batteries. (2) Replace with battery of same group number as shown on original battery label. | ||
| (1) | All diesel-powered vehicles use 2 batteries. |
| (2) | Replace with battery of same group number as shown on original battery label. |
BATTERY SPECIFICATIONS
ANTI-LOCK BRAKE SYSTEM
The anti-lock brake system contains electronic equipment that can be susceptible to interference caused by improperly installed or high output radio transmitting equipment. Since this interference could cause the possible loss of the anti-lock braking capability, such equipment should be installed by qualified professionals.
On models equipped with anti-lock brake systems, ALWAYS observe the following cautions
- DO NOT attempt to bleed hydraulic system without first referring to the appropriate ANTI-LOCK BRAKE SYSTEM article in the BRAKES Section.
- DO NOT mix tire sizes. As long as tires remain close to the original diameter, increasing the width is acceptable. Rolling diameter must be identical for all 4 tires. Some manufacturers recommend tires of the same brand, style and type. Failure to follow this precaution may cause inaccurate wheel speed readings.
- Use ONLY recommended brake fluids. DO NOT use silicone brake fluids in an ABS-equipped vehicle.
REPLACING BLOWN FUSES
Before replacing a blown fuse, remove ignition key, turn off all lights and accessories to avoid damaging the electrical system. Be sure to use fuse with the correct indicated amperage rating. The use of an incorrect amperage rating fuse may result in a dangerous electrical system overload.
BATTERY WARNING
| WARNING | When battery is disconnected, vehicles equipped with computers may lose memory data. When battery power is restored, driveability problems may exist on some vehicles. These vehicles may require a relearn procedure. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION section. |
BRAKE PAD WEAR INDICATOR
Indicator will cause a squealing or scraping noise, warning that brake pads need replacement.
CATALYTIC CONVERTER
To prevent catalytic converter overheating, DO NOT allow engine to idle for more than 20 minutes.
DIESEL FUEL ANTI-FUNGAL ADDITIVES
| CAUTION | If fuel contamination due to fungi or other microorganisms is suspected a fuel additive with a biocide may be used. Follow the manufacturers dosage as recommended on product label. Use biocides ONLY when necessary, excessive use can may cause other fuel system problems. |
DIESEL FUEL CONTAMINATION
| WARNING | Diesel fuel system may be contaminated with fungi or other microorganisms. Keep contaminated fuel away from open skin cuts or sores to prevent skin irritation or infection. |
DIESEL FUEL REQUIREMENTS
| CAUTION | All diesel engines are to use Diesel Fuel #2 when the outside temperature is above 20°F (-7°C). In temperatures that are below 20°F (-7°C) use Diesel Fuel #1, this will reduce the chance of the fuel thickening and forming wax. |
Note: A Diesel Fuel #1 & #2 combination (Blended Fuel) may be
used, and is recommended for mild winter driving.
ELECTROSTATIC DISCHARGE SENSITIVE (ESD) PARTS
| WARNING | Many solid state electrical components can be damaged by static electricity (ESD). Some will display a warning label, but many will not. Discharge personal static electricity by touching a metal ground point on the vehicle prior to servicing any ESD sensitive component. |
FUEL SYSTEM SERVICE
| WARNING | Relieve fuel system pressure prior to servicing any fuel system component (fuel injection models). |
HALOGEN BULBS
Halogen bulbs contain pressurized gas which may explode if overheated. DO NOT touch glass portion of bulb with bare hands. Eye protection should be worn when handling or working around halogen bulbs.
RADIATOR FAN
Keep hands away from radiator fan. Fan is controlled by a thermostatic switch which may come on or run for up to 15 minutes even after engine is turned off.
RADIATOR CAP
| CAUTION | Always disconnect the fan motor when working near the radiator fan. The fan is temperature controlled and could start at any time even when the ignition key is in the OFF position. DO NOT loosen or remove radiator cap when cooling system is hot. |