Chevrolet Silverado K2XX 2014-2018 Fuses Complete Guide

BySerge Barrett

The Chevrolet Silverado K2XX (2014-2018) uses multiple fuse and relay boxes to protect its electrical circuits. Understanding the exact location, amperage, and function of each fuse is essential for diagnosing electrical failures, replacing blown fuses safely, and avoiding costly dealer visits. This guide covers every fuse in every box for the K2XX generation Silverado, including the instrument panel fuse block, engine compartment fuse block, and the auxiliary fuse block where applicable.

Fuse Box Locations on the 2014-2018 Chevrolet Silverado K2XX

The Silverado K2XX has two primary fuse centers plus a supplemental block depending on trim and configuration:

  • Instrument Panel Fuse Block – Located on the driver’s side, behind the left end of the instrument panel. Access by opening the driver’s door and pulling the cover panel outward.
  • Engine Compartment Fuse Block – Located in the engine bay on the driver’s side, near the battery. Lift the cover marked with a fuse symbol to access.
  • Auxiliary Fuse Block – Present on certain trims (LTZ, High Country), typically found under the rear seat or in the center console area.

Instrument Panel Fuse Block – Complete Fuse List

  • Fuse 1 – 10A – Instrument cluster, driver information center
  • Fuse 2 – 10A – HVAC control module, heated seat modules
  • Fuse 3 – 20A – Cigarette lighter / accessory power outlet (instrument panel)
  • Fuse 4 – 10A – Radio, infotainment head unit
  • Fuse 5 – 10A – Body control module (BCM) ignition feed
  • Fuse 6 – 15A – Windshield wiper motor
  • Fuse 7 – 10A – Reverse lockout solenoid, transmission shift interlock
  • Fuse 8 – 10A – Brake switch, stoplight signal
  • Fuse 9 – 20A – Power mirrors, power windows (driver)
  • Fuse 10 – 30A – Power windows (passenger side)
  • Fuse 11 – 10A – Turn signal and hazard flasher module
  • Fuse 12 – 10A – Occupant detection system, airbag SDM
  • Fuse 13 – 5A – OnStar module, telematics
  • Fuse 14 – 10A – Interior lighting, dome lamp, map lights
  • Fuse 15 – 10A – Instrument panel dimmer, ambient lighting
  • Fuse 16 – 15A – 4WD transfer case switch, electric shift module
  • Fuse 17 – 20A – Heated steering wheel, heated mirrors
  • Fuse 18 – 10A – Park assist module, backup camera
  • Fuse 19 – 10A – ABS/traction control indicator, EBCM signal
  • Fuse 20 – 10A – Keyless entry receiver, remote start module
  • Fuse 21 – 15A – Horn relay feed
  • Fuse 22 – 10A – Sunroof module (if equipped)
  • Fuse 23 – 10A – Trailer brake controller (if equipped)
  • Fuse 24 – 10A – USB hub, media interface ports
  • Fuse 25 – 5A – Clock, memory retention for radio and BCM

Engine Compartment Fuse Block – Complete Fuse List

  • Fuse 1 – 60A – Antilock brake system (ABS) pump motor
  • Fuse 2 – 40A – Cooling fan relay feed, primary fan
  • Fuse 3 – 40A – Cooling fan secondary / condenser fan
  • Fuse 4 – 30A – Starter motor relay feed
  • Fuse 5 – 80A – Underhood fuse block feed from battery
  • Fuse 6 – 40A – BCM main battery feed
  • Fuse 7 – 20A – Fuel pump relay, fuel pump module
  • Fuse 8 – 15A – Engine control module (ECM) ignition feed
  • Fuse 9 – 10A – ECM battery feed, keep-alive memory
  • Fuse 10 – 10A – Transmission control module (TCM)
  • Fuse 11 – 15A – Injectors, ignition coils feed
  • Fuse 12 – 20A – Throttle body heater, electronic throttle control
  • Fuse 13 – 30A – HVAC blower motor relay
  • Fuse 14 – 30A – Rear window defogger (if equipped)
  • Fuse 15 – 20A – Headlamp washer pump (if equipped)
  • Fuse 16 – 15A – Oxygen sensors, upstream and downstream
  • Fuse 17 – 10A – EVAP canister purge solenoid
  • Fuse 18 – 10A – EGR valve, manifold absolute pressure sensor
  • Fuse 19 – 25A – Power running boards (if equipped)
  • Fuse 20 – 20A – Trailer tow connector (7-pin)
  • Fuse 21 – 30A – Power liftgate or tailgate lock motor
  • Fuse 22 – 10A – Brake booster vacuum pump (diesel models)
  • Fuse 23 – 40A – Alternator exciter, battery charge circuit
  • Fuse 24 – 20A – Auxiliary power outlet (bed / cargo area)
  • Fuse 25 – 30A – Rear differential lock (if equipped)

Key Relay Locations in the Engine Compartment Block

  • Relay K1 – Starter relay
  • Relay K2 – Fuel pump relay
  • Relay K3 – Primary cooling fan relay
  • Relay K4 – Secondary cooling fan relay
  • Relay K5 – HVAC blower motor relay
  • Relay K6 – Horn relay
  • Relay K7 – Accessory delay relay
  • Relay K8 – Rear defogger relay

How to Identify and Replace a Blown Fuse on the K2XX Silverado

Use the fuse puller tool stored inside the instrument panel fuse block cover. Always replace with a fuse of identical amperage – never use a higher-rated fuse as this can cause wiring damage or fire. The K2XX uses standard ATO/ATC blade-style fuses throughout. Maxi fuses (60A–80A) in the engine bay require a flat-blade tool and are sold at any auto parts store. If a fuse blows repeatedly, the underlying short circuit must be repaired before replacing the fuse again.

Common Electrical Problems Related to Fuses on 2014-2018 Silverado

  • Fuse 3 (instrument panel, 20A) blowing – Often caused by a faulty cigarette lighter socket with debris or a short in the accessory wiring harness.
  • Fuse 7 (engine bay, 20A) fuel pump fuse failure – Can indicate a failing fuel pump drawing excess current, especially above 150,000 miles.
  • Fuse 9 (instrument panel, 20A) power window inoperative – Frequently caused by a worn window regulator motor binding in cold weather.
  • Fuse 13 (engine bay, 30A) HVAC blower not working – Check the blower motor resistor before replacing the fuse, as resistance failure can draw excessive current.
  • Fuse 2 (engine bay, 40A) cooling fan fuse – Overheating issues often traced here; inspect fan motor brushes before replacing.

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