The Chevrolet Silverado Mk2 (2nd Gen), produced from 2007 to 2013, is a full-size pickup truck renowned for its robust performance, towing capacity, and versatility. A key component of its reliability is its well-organized electrical system, with fuse boxes and relays playing crucial roles.
The fuse box in the Chevrolet Silverado 2nd Gen is typically located in two primary locations: the engine compartment and the interior, often under the dashboard on the driver’s side. The engine compartment fuse box controls high-power components like the engine, transmission, and anti-lock brakes, while the interior fuse box manages accessories such as the radio, power windows, and interior lights. Each fuse is designed to protect a specific circuit by disconnecting power in the event of an overload or short circuit.
Relays in the Silverado function as electrically controlled switches that manage high-current circuits for components like the fuel pump, starter motor, and cooling fans. These relays ensure that high-power systems can be controlled safely by low-power electrical circuits. Maintaining the fuses and relays is essential for preventing electrical malfunctions and ensuring the truck’s systems operate efficiently and reliably.
MUST READ: DYI – How to Check Car Fuses?
(2007-2013) Chevrolet Silverado mk2 (2nd Gen) fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Chevrolet Silverado mk2 (2nd Gen) 2007-2013 fuse assignment
- Cigar lighter / power outlet fuses in the Chevrolet Silverado are the fuses №. 2 (Rear Accessory Power Outlet) and №. 16 (Accessory Power Outlets) in the Instrument panel fuse box.
Year of production: from 2007, 2008, 2009, 2010, 2011, 2012, 2013
Instrument Panel Fuse Box
Fuse box location
It is located on the driver’s side of the instrument panel, behind the cover.
Fuse box diagram
Assignment of the fuses in the Instrument Panel
| №/Name | Usage |
|---|---|
| 1 | Rear Seats |
| 2 | Rear Accessory Power Outlet |
| 3 | Steering Wheel Controls Backlight |
| 4 | Driver Door Module |
| 5 | Dome Lamps, Driver Side Turn Signal |
| 6 | Driver Side Turn Signal, Stoplamp |
| 7 | Instrument Panel Back Lighting |
| 8 | Passenger Side Turn Signal, Stoplamp |
| 9 | 2007-2008: Universal Home Remote 2009-2013: Passenger Door Module, Driver Unlock |
| 10 | Power Door Lock 2 (Unlock Feature) |
| 11 | Power Door Lock 2 (Lock Feature) |
| 12 | Stoplamps, Center High-Mounted Stoplamp |
| 13 | Rear Climate Controls |
| 14 | Power Mirror |
| 15 | Body Control Module (BCM) |
| 16 | Accessory Power Outlets |
| 17 | Interior Lamps |
| 18 | Power Door Lock 1 (Unlock Feature) |
| 19 | Rear Seat Entertainment |
| 20 | Ultrasonic Rear Parking Assist, Power Liftgate |
| 21 | Power Door Lock 1 (Lock Feature) |
| 22 | Driver Information Center (DIC) |
| 23 | Rear Wiper |
| 24 | Cooled Seats |
| 25 | Driver Seat Module, Remote Keyless Entry System |
| 26 | Driver Power Door Lock (Unlock Feature) |
| Circuit Breaker | |
| LT DR | Driver Side Power Window Circuit Breaker |
| Harness Connector | |
| LT DR | Driver Door Harness Connection |
| BODY | Harness Connector |
| BODY | Harness Connector |
Center instrument panel fuse box
It is located underneath the instrument panel, to the left of the steering column.
| Harness Connector | Usage |
|---|---|
| BODY 2 | Body Harness Connector 2 |
| BODY 1 | Body Harness Connector 1 |
| BODY 3 | Body Harness Connector 3 |
| HEADLINER 3 | Headliner Harness Connector 3 |
| HEADLINER 2 | Headliner Harness Connector 2 |
| HEADLINER 1 | Headliner Harness Connector 1 |
| SEO/ UPFITTER | Special Equipment Option Upfitter Harness Connector |
| Circuit Breaker | |
| CB1 | Passenger Side Power Window Circuit Breaker |
| CB2 | Passenger Seat Circuit Breaker |
| CB3 | Driver Seat Circuit Breaker |
| CB4 | Rear Sliding Window |
Engine Compartment Fuse Box
Fuse box location
Fuse box diagram
Assignment of the fuses and relay in the Engine Compartment
| №/Name | Usage |
|---|---|
| 1 | Right Trailer Stop/ Turn Lamp |
| 2 | Electronic Suspension Control, Automatic Level Control Exhaust |
| 3 | Left Trailer Stop/ Turn Lamp |
| 4 | Engine Controls |
| 5 | Engine Control Module, Throttle Control |
| 6 | Trailer Brake Controller |
| 7 | Front Washer |
| 8 | Oxygen Sensor |
| 9 | Antilock Brakes System 2 |
| 10 | Trailer Back-up Lamps |
| 11 | Driver Side Low-Beam Headlamp |
| 12 | Engine Control Module (Battery) |
| 13 | Fuel Injectors, Ignition Coils (Right Side) |
| 14 | Transmission Control Module (Battery) |
| 15 | Vehicle Back-up Lamps |
| 16 | Passenger Side Low-Beam Headlamp |
| 17 | Air Conditioning Compressor |
| 18 | Oxygen Sensors |
| 19 | Transmission Controls (Ignition) |
| 20 | Fuel Pump |
| 21 | Fuel System Control Module |
| 22 | Not Used |
| 23 | Not Used |
| 24 | Fuel Injectors, Ignition Coils (Left Side) |
| 25 | Trailer Park Lamps |
| 26 | Driver Side Park Lamps |
| 27 | Passenger Side Park Lamps |
| 28 | Fog Lamps |
| 29 | Horn |
| 30 | Passenger Side High-Beam Headlamp |
| 31 | Daytime Running Lamps (DRL) |
| 32 | Driver Side High-Beam Headlamp |
| 33 | Daytime Running Lamps 2 |
| 34 | Sunroof |
| 35 | Key Ignition System, Theft Deterrent System |
| 36 | Windshield Wiper |
| 37 | SEO B2 Upfitter Usage (Battery) |
| 38 | Electric Adjustable Pedals |
| 39 | Climate Controls (Battery) |
| 40 | Airbag System (Ignition) |
| 41 | Amplifier |
| 42 | Audio System |
| 43 | Miscellaneous (Ignition), Cruise Control |
| 44 | Not Used |
| 45 | Airbag System (Battery) |
| 46 | Instrument Panel Cluster |
| 47 | Power Take-Off |
| 48 | Auxiliary Climate Control (Ignition) Compass-Temperature Mirror |
| 49 | Center High-Mounted Stoplamp (CHMSL) |
| 50 | Rear Defogger |
| 51 | Heated Mirrors |
| 52 | SE0B1 Upfitter Usage (Battery) |
| 53 | Cigarette Lighter, Accessory Power Outlet |
| 54 | Automatic Level Control CompressorRelay SEO Upfitter Usage |
| 55 | Climate Controls (Ignition) |
| 56 | Engine Control Module, Secondary Fuel Pump (Ignition) |
| J-Case Fuses | |
| 57 | Cooling Fan 1 |
| 58 | Not Used |
| 59 | Heavy Duty Antilock Brake System |
| 60 | Cooling Fan 2 |
| 61 | Antilock Brake System 1 |
| 62 | Starter |
| 63 | Stud 2 (Trailer Brakes) |
| 64 | Left Bussed Electrical Center 1 |
| 65 | Not Used |
| 66 | Heated Windshield Washer System / Not Used |
| 67 | Four-Wheel Drive System / Transfer Case |
| 68 | Stud 1 (Trailer Connector Battery Power) (Optional -40A Fuse Required) |
| 69 | Mid-Bussed Electrical Center 1 |
| 70 | Climate Control Blower |
| 71 | Not Used |
| 72 | Left Bussed Electrical Center 2 |
| Relays | |
| FAN HI | Cooling Fan High Speed |
| FAN LO | Cooling Fan Low Speed |
| FAN CNTRL | Cooling Fan Control |
| HDLP LO/HID | Low-Beam Headlamp |
| FOG LAMP | Front Fog Lamps |
| A/C CMPRSR | Air Conditioning Compressor |
| STRTR | Starter |
| PWR/TRN | Powertrain |
| FUEL PMP | Fuel Pump |
| PRK LAMP | Parking Lamps |
| REAR DEFOG | Rear Defogger |
| RUN/CRNK | Switched Power |
Hybrid Auxiliary Engine Compartment Fuse Block
The fuse block is located in the engine compartment near the front of the vehicle.
Hybrid Auxiliary Engine Compartment Fuse Block
| №/Name | Usage |
|---|---|
| 1 | ACPO (SUV Only) |
| 2 | BECM FAN |
| 3 | ACCM |
| 4 | CAB HTR PMP |
| 5 | EMPTY |
| 6 | COOL PUMP |
| 7 | EPS |
| 8 | Drive Motor/Generator Control Module 1 |
| 9 | Drive Motor/Generator Control Module 2 |
| 10 | BECM |
| J-Case fuses | |
| FAN 1 | Cooling Fan 1 |
| TRANS PUMP | Auxiliary Transmission Fluid Pump |
| FAN 2 | Cooling Fan 2 |
| CAB HTR PMP | Cab Heater Pump |
| Relays | |
| CAB HTR PUMP | Cabin Heater Pump |
| COOL PUMP | Coolant Pump |
| FAN LOW | Cooling Fan Low Speed Relay |
| FAN MID 1 | Cooling Fan Mid 1 |
| FAN HI | Cooling Fan High Speed Relay |
| FAN MID 2 | Cooling Fan Mid 2 |
| FAN CNTRL | Cooling Fan Control |
Conclusion
For owners and enthusiasts of classic Chevrolet Silverado mk2 (2nd Gen) 2007-2013, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Chevrolet’s craftsmanship and innovation in the automotive industry during that era.
