2022 Chevrolet Silverado 1500 — Fuse Box Diagram & Amperage

Quick answer

• Engine compartment (under‑hood) fuse/relay block: Driver’s side of the engine bay near the battery and air box, under a plastic cover. Houses most powertrain, lighting, ABS, cooling fan, A/C, and trailer-tow fuses and relays.
• Instrument panel fuse/relay block: Left end of the dash (driver’s side). Pop off the side trim cover with the door open. Protects interior power (radio/infotainment, 12V/cigar outlets, HVAC controls, airbags, BCM, OBD-II).
• No trunk/cargo fuse box on this pickup. Trailer-tow circuits are fed from the under‑hood block.

Note: Exact fuse numbers/positions vary by trim, options, and build date. Use the legend on the fuse box lid and your owner’s manual to confirm. The tables below list the most common 2022 Silverado 1500 (T1 platform) assignments.

Engine compartment fuse/relay block (under‑hood)

Typical location: Driver’s side of engine bay. Squeeze tabs and lift the cover. The underside of the lid has the position map. This block contains mini/micro fuses, J‑case maxi fuses, and multiple relays.

Relays in this block (typical):

• Starter/Crank relay (CRNK)
• A/C compressor clutch relay
• Cooling fan relays (Fan 1/Fan 2)
• Headlamp relays (varies by trim; some are BCM‑driven solid state)
• Run/Crank/IGN relays (depending on option content)

Instrument panel fuse/relay block (left dash end/kick‑panel)

Typical location: Pop the panel off the left end of the dashboard with the driver’s door open. Fuses here are mostly mini fuses for interior electronics.

Relays in this block (typical):

• RAP (Retained Accessory Power) relay
• Run/Crank relay (varies by content; some functions integrated in BCM)

How to test a fuse

• Visual check: Remove the suspect fuse with the puller in the lid. Look through the translucent body for a broken element. Replace only with the same amp rating and type (mini, micro, J‑case).
• Test light method: Key on. Probe both test tabs on top of the fuse. The light should illuminate on both sides. Power on one side only indicates a blown fuse.
• Multimeter continuity: Remove the fuse. Set meter to continuity or ohms. A good fuse reads near 0 Ω/beeps; an open fuse reads OL/infinite.
• Load verification: If a replacement blows immediately, the circuit has a short. Do not up‑size the fuse—find and repair the fault first.

Common blown fuses on this vehicle (what to check first)

• Trailer towing circuits: TRLR LT/RT, TRLR PARK, and TRLR BRK commonly blow due to corrosion or water intrusion at the 7‑pin connector, damaged trailer wiring, or a shorted trailer lamp. Inspect the trailer first; test with no trailer connected.
• 12V accessory/cigar lighter: Coins or metal debris in the front or console power outlets cause instant 20A fuse failure. Inspect and clean outlets; check for damaged phone chargers.
• Headlamp fuses (low/high): Shorted bulbs or chafed front harness near the headlamp assemblies. Verify bulb condition and inspect wiring near the radiator support.
• Blower motor: Seized blower or failing blower resistor/module can pop the 30–40A feed. Spin the blower by hand and check for water intrusion in the HVAC case.
• Fuel pump/FPCM: If the 20A pump feed blows, check the in‑tank pump current draw and wiring over the tank/along frame for rub‑through.
• ECM/PCM or O2 heater fuses: Shorts in O2 heater circuits are common after exhaust work. Inspect sensor leads where they cross the transmission and frame.
• ABS pump J‑case: Intermittent shorts in the pump or harness near the left frame rail. Scan for ABS DTCs and inspect the pump/module connector.

Important: Fuse numbering and cavity layout vary across WT, LT, RST, LTZ, Trail Boss, and High Country trims and with options (e.g., BOSE audio, dual batteries, Max Trailering). Always confirm the exact fuse number and cavity on the diagram printed inside your fuse box lid and in your owner’s manual/wiring diagrams before servicing.

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