Chevrolet Pickup C1500 1991 - FUSES & CIRCUIT BREAKERS Fuses & Circuit Breakers 1988-91 General Motors

Chevrolet Pickup C1500 1991 - FUSE PANEL LOCATION

The fuse block is located behind a cover in the dash to the left of the steering column.

Chevrolet Pickup C1500 1991 - FUSE PANEL IDENTIFICATION

Fig. 1: Chevrolet Pickup C1500 1991 - Component Locations - Fuse Panel Identification (1988-91)

Chevrolet Pickup C1500 1991 - FUSE & CIRCUIT BREAKER IDENTIFICATION

1. 1 - HORN/DIM 20 Amp (Yellow) Horn, Cigarette Lighter, Dome & Cargo Lights, Clock
2. 2 - T/L CTSY 20 Amp (Yellow) Taillights/Courtesy Lights, Parking Lights, Roof Marker
3. 3 - ECM B 10 Amp (Red) (Gasoline Models) Electronic Control Module Memory, TBI Fuel Pump, TBI Auxiliary Tank Selector Switch
4. 4 - IGN 20 Amp (Yellow) Rear Defogger, Cruise Control, Engine Overspeed Light, Carbureted & Diesel Auxiliary Fuel Tank Selector Switch
5. 5 - GAUGE/IDLE 20 Amp (Yellow) Instrument Cluster, Seat Belt & Lights On Buzzer, TBI Torque Converter Clutch Solenoid, Auxiliary Coolant Fan Relay, TBI Fuel Pump Priming Module, Transmission Kickdown Relay and Solenoid (M40), A.I.R. Divert Solenoid (Carbureted Models), Water in Fuel Sensor & Fuel Heater (Diesel)
6. 6 - TURN-B/U 15 Amp (Blue) Directional Signals, Back-Up Lights
7. 7 - ECM I 10 Amp (Red) (Gasoline Models) ECM-Ignition Feed (Ing. 1), Vehicle Speed Sensor, TBI Spark Control Module, TBI Fuel Injectors, TBI A.I.R. Divert Solenoid, TBI EGR or E.V.R.V. Solenoid 8 - INST LPS 5 Amp Instrument Panel Lights, Lights On Reminder Module
8. 9 - AUX HTR A/C 25 Amp Auxiliary Heater & Air Conditioning
9. 10 - HTR A/C 20 Amp (Yellow) Heater & Air Conditioning
10. 11 - PWR WDO 30 Amp (Circuit Breaker) Power Windows
11. 12 - Not Used (1988-90) DRL 15 Amp (Blue) (1991) Daytime Running Lights (Canada)
12. 13 - PWR ACC 30 Amp (Circuit Breaker) Tailgate Power Window, Rear Defogger, Power Door Locks
13. 14 - STOP-HAZ 15 Amp (Blue) Hazard Flasher, Seat Belt & Headlight On Buzzer, Stop Lights
15. 15 - RADIO 15 Amp (Blue) Radio, Auxiliary Battery Relay, 4WD Indicator Light, Automatic Transmission, Converter Clutch Solenoid (Diesel)
16. 16 - WIPER 25 Amp Windshield Wipers, Washer Pump
17. 17 - CRANK 3 Amp (Violet) (Gasoline Models) Electronic Control Module, Crank Circuit
18. 18 - CHOKE 20 Amp (Yellow) (1988-90) Not Used (1991) Carburetor Choke Heater

Chevrolet Pickup C1500 1991 - BATTERY SPECIFICATIONS

CAUTION:

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 the GENERAL INFORMATION section.

Chevrolet Pickup C1500 1991 BATTERY SPECIFICATIONS

Year & Engine (1)	Model Number
1988-91
4.3L	(2)
5.0L	(2)
5.7L	(2)
7.4L	(2)
6.2L Diesel	(2)
(1) All diesel-powered vehicles use 2 batteries. (2) Replace with battery of same group number as shown on original battery label.

Chevrolet Pickup C1500 1991 - CAUTIONS & WARNINGS ANTI-LOCK BRAKE SYSTEM (If Equipped)

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.

Chevrolet Pickup C1500 1991 - 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.

Chevrolet Pickup C1500 1991 - 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.

Chevrolet Pickup C1500 1991 - BRAKE PAD WEAR INDICATOR

Indicator will cause a squealing or scraping noise, warning that brake pads need replacement.

Chevrolet Pickup C1500 1991 - CATALYTIC CONVERTER

To prevent catalytic converter overheating, DO NOT allow engine to idle for more than 20 minutes.

Chevrolet Pickup C1500 1991 - 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.

Chevrolet Pickup C1500 1991 - FUEL SYSTEM SERVICE

WARNING:

Relieve fuel system pressure prior to servicing any fuel system component (fuel injection models).

Chevrolet Pickup C1500 1991 - 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.

Chevrolet Pickup C1500 1991 - RADIATOR FAN

WARNING:

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.

Chevrolet Pickup C1500 1991 - INSTRUMENT PANEL FUSE BLOCK

Fig. 2: Chevrolet Pickup C1500 1991 - Component Locations - Identifying Instrument Panel Fuse Block Components