Chevrolet 2003 Impala Owner's Manual page 351

Underhood Fuse Block (Upper)
Some fuses are in a fuse block in the engine
compartment on the passenger's side of the vehicle.
See Engine Compartment Overview on page 5-12
for more information on location.
I I 7 1
r - - -
1
RTI/P R T I P
1,
U/HOOD
i i
1
HORNS
1
I
FOG LTS
I
L - - - - l
HORN RLY
FOG RLY FPMP RLY DRL/DCT LTS
L - - J
U
UCT LTS PCM #C RLY (CMPR)
Relays
Fuel Pump FUEL PUMP
Usage
Air Induction Reaction Relav
A.I.R. RELAY
Daytime Running Lamps DRL RELAY
CRANK RLY
Horn HORNS
Starter (Crank) Relay
I
FOG LTS
I
Fog Lamps
Fuses
Usage
LEFT I/P Left Fuse Block (Battery)
RT I/P #1
Right Fuse Block (Batten/) RT I/P #2
Right Fuse Block (Battery)
U/HOOD #1
Horn Relay HORN RLY
Underhood (Top) Fuse Block
BLANK
BLANK
Blank
Foq Lamps Relav FOG RLY
Blank
I
F/PMP RLY
I
Fuel PumD Relav
I
DRUEXIT LTS
EXT LTS
Headlamps
Low (Left Front) & High (Left Front)
Low (Right Front) & High
(Right Front) Headlamps
PCM
Generator
(CMPR)
HVAC Compressor Relay & A/C RLY
PCM Battery
5-98