Chevrolet TrailBlazer 2003 - 2003 ELECTRICAL Fuses & Circuit Breakers - Envoy XL & Trailblazer

Chevrolet TrailBlazer 2003 - IDENTIFICATION

CAUTION:

When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See appropriate COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

Chevrolet TrailBlazer 2003 MODEL APPLICATION

Model	Year
Chevrolet
Trailblazer	2003
GMC
Envoy XL	2003

Chevrolet TrailBlazer 2003 - FUSIBLE LINKS

Fusible links are usually located between battery and starter or electrical center. For description and repair procedures, see Fig. 1 .

Fig. 1: Chevrolet TrailBlazer 2003 - Component Locations - Repairing Fusible Links

Chevrolet TrailBlazer 2003 - REAR FUSE BLOCK

NOTE:

The GMT 360, VIN 3 model with short wheelbase uses a different rear fuse block from the GMT 370, VIN 6 model with long wheelbase. The rear fuse block is located under left second row seat on both. See Fig. 2 .

Fig. 2: Chevrolet TrailBlazer 2003 - Component Locations - Locating Rear Fuse Block

Chevrolet TrailBlazer 2003 - Short Wheelbase

Fig. 3: Chevrolet TrailBlazer 2003 - Component Locations - Identifying Rear Fuse Block Components (GMT 360, VIN 3 With Short Wheelbase)

Fig. 4: Chevrolet TrailBlazer 2003 - Component Locations - Rear Fuse Block Legend (GMT 360, VIN 3 With Short Wheelbase - 1 Of 2)

Fig. 5: Chevrolet TrailBlazer 2003 - Component Locations - Rear Fuse Block Legend (GMT 360, VIN 3 With Short Wheelbase - 2 Of 2)

Chevrolet TrailBlazer 2003 - Long Wheelbase

Fig. 6: Chevrolet TrailBlazer 2003 - Component Locations - Identifying Rear Fuse Block Components (GMT 370, VIN 6 With Long Wheelbase)

Fig. 7: Chevrolet TrailBlazer 2003 - Component Locations - Rear Fuse Block Legend (GMT 370, VIN 6 With Long Wheelbase - 1 Of 2)

Fig. 8: Chevrolet TrailBlazer 2003 - Component Locations - Rear Fuse Block Legend (GMT 370, VIN 6 With Long Wheelbase - 2 Of 2)

Chevrolet TrailBlazer 2003 - UNDERHOOD FUSE BLOCK

NOTE:

Underhood fuse block is located on driver's side of engine compartment. See Fig. 9 .

Fig. 9: Chevrolet TrailBlazer 2003 - Component Locations - Locating Underhood Fuse Block

Chevrolet TrailBlazer 2003 - 4.2L Engine

Fig. 10: Chevrolet TrailBlazer 2003 - Component Locations - Identifying Underhood Fuse Block Components (4.2L Engine)

Fig. 11: Chevrolet TrailBlazer 2003 - Component Locations - Underhood Fuse Block Legend (4.2L Engine - 1 Of 2)

Fig. 12: Chevrolet TrailBlazer 2003 - Component Locations - Underhood Fuse Block Legend (4.2L Engine - 2 Of 2)

Chevrolet TrailBlazer 2003 - 5.3L Engine

Fig. 13: Chevrolet TrailBlazer 2003 - Component Locations - Identifying Underhood Fuse Block Components (5.3L Engine)

Fig. 14: Chevrolet TrailBlazer 2003 - Component Locations - Underhood Fuse Block Legend (5.3L Engine - 1 Of 2)

Fig. 15: Chevrolet TrailBlazer 2003 - Component Locations - Underhood Fuse Block Legend (5.3L Engine - 2 Of 2)