Electrical System
The vehicle has fuses and circuit breakers to protect against an electrical system overload.
When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems.
Fuses and circuit breakers protect power devices in the vehicle.
Replace a bad fuse with a new one of the identical size and rating.
If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.
An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off.
If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart.
Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers.
If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.
The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.
See Accessories and Modifications 0 236 and
General Information 0 235.
To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.
Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as possible.
To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block 0 261 and
Rear Compartment Fuse Block 0 265.
To remove the hinged fuse block cover, press the clip at the front of the cover, and swing it up.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
Fuses Usage
F1 ABS pump
Fuses Usage
F2 —
F3 Driver power seat
|
Fuses F4 F5 F6 |
Usage Cooling fan Passenger power seat — |
Fuses F20 F21 F22 |
Usage OnStar/Navigation Body control module 6 ABS valve |
Fuses F35 F36 |
Usage Automatic headlamp leveling motor Left high-beam headlamp |
|
F7 F8 |
— — |
F23 F24 |
— — |
F37 |
Right high-beam headlamp |
|
F9 F10 F11 F12 F13 |
— — AUX DRL Front wiper Starter |
F25 F26 F27 F28 |
Electric steering column lock Body control module 2 — Body control |
F38 F39 F40 F41 |
— — Rear electrical center/Ignition Malfunction indicator lamp/ |
|
F14 |
Brake vacuum pump |
F29 |
module 3 Body control |
F42 |
Ignition HVAC/ISRVM/ |
|
F15 F16 |
Automatic headlamp leveling module Front heated seat |
F30 F31 |
module 8 Windshield wiper Right HID headlamp |
F43 |
OSRVM Front exhaust valve active fuel management |
|
F17 |
Passenger window |
F32 |
Left HID headlamp |
F44 |
— |
|
F18 F19 |
Body control module 4 SDM/AOS |
F33 F34 |
— Horn |
F45 F46 |
Sunroof Body control module 7 |
|
Fuses |
Usage |
Fuses |
Usage |
Fuses |
Usage |
|
F47 F48 F49 |
CGM A/C clutch Heated steering wheel |
F60 F61 |
Transmission control module battery Non-walk/Vehicle |
F75 F76 F77 |
Spare Spare Spare |
|
F50 F51 F52 F53 |
Fuel system control module/ Ignition Rear exhaust valve PTSQ — — |
F62 F63 F64 F65 |
Ignition coils odd
Non-walk/O2 sensor Ignition coils even
— |
Relays K1 K2 K3 K4 K5 |
Usage — Run/Crank — Vacuum pump A/C control |
|
F54 F55 |
Engine coolant pump Fuel prime |
F66 F67 |
Engine control module 1 Engine control module 2 |
K6 K7 K8 |
Coolant pump Engine control module Fuel prime |
|
F56 |
— |
F68 |
Spare |
K9 |
— |
|
F57 F58 F59 |
Engine control module/Ignition Transmission control module/ Ignition — |
F69 F70 F71 F72 F73 |
Spare Spare Spare Spare Spare |
K10 |
Starter |
|
F74 |
Spare |
The rear compartment fuse block is on the right side under the trunk load floor.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
Fuses Usage
F1 Rear window defogger
|
Fuses F2 F3 |
Usage Front blower Electric parking brake |
Fuses F19 F20 |
Usage Front ventilated seat Spare |
Fuses F34 F35 |
Usage Engine control module battery Fuel system |
|
F4 F5 |
— — |
F21 F22 |
— — |
F36 |
control module V6 — |
|
F6 |
Rear drive control module |
F23 |
Body control module |
F37 |
Electric steering column lock |
|
F7 F8 |
Right window — |
F24 F25 |
— — |
F38 |
Outside rear view mirror/Power window |
|
F9 |
Left window |
F26 |
— |
F39 |
Rear closure |
|
F10 |
Heated mirror |
F27 |
RGB lights |
F40 |
— |
|
F11 F12 F13 F14 F15 |
— Heated steering wheel — HVAC control Spare |
F28 F29 F30 F31 |
Passive entry/ Passive start battery Data link connector Canister vent Power fold top |
F41 F42 F43 F44 |
Battery regulated voltage control SADS Rear drive control module/ICCM Folding top solenoid |
|
F16 F17 F18 |
Display Spare — |
F32 F33 |
Memory seat module Wireless charger |
F45 F46 |
Amplifier Fuel system control module V8 |
|
F47 |
Shunt |
Fuses Usage
F48 —
Circuit Breakers
Usage
F49 Steering wheel
F50 Front camera module
F51 Camera module
F52 Ultrasonic park aid
F53 —
F54 Side blind zone alert
F55 Radio
F56 —
F57 —
Relays Usage
K1 Rear window defogger
K2 Fuel system control module
CB2 Retained accessory power CB3 —
Circuit Breakers
CB1 —
Usage
Download Manual