GM Service Manual Online
For 1990-2009 cars only

Object Number: 8786  Size: SH

The fuse is the most common method of an automotive wiring circuit protection. Whenever there is an excessive amount of current flowing through a circuit the fusible element will melt and create an open or incomplete circuit. Fuses are an one time protection device and must be replaced each time the circuit is overloaded. To determine if a fuse is open, remove the suspected fuse and examine the element in the fuse for an open (2). If not broken (1), also check for continuity using a DMM or a continuity tester. If the element is open or continuity is suspect, replace the fuse with one of equal current rating.

Fuse Types

Current Rating Amperes

Color

Auto Fuses, Mini Fuses

2

Gray

3

Purple

5

Tan

7.5

Brown

10

Red

15

Blue

20

Yellow

25

White or Natural

30

Green

Large Fuses

20

Yellow

30

Light Green

40

Orange or Amber

60

Blue

50

Red