2016 Chevrolet Suburban Fuse Box Diagram & Amperage

Quick Answer

The 2016 Chevrolet Suburban is equipped with three main fuse box locations:

• Underhood Fuse Block: Located in the engine compartment on the driver's side, near the battery.
• Instrument Panel Fuse Block: Found on the passenger side of the dashboard, behind a removable trim panel.
• Rear Underseat Fuse Block: Situated under the second-row seat on the driver's side.

Underhood Fuse Block

The underhood fuse block protects various engine and chassis electrical components. Always refer to the fuse legend on the underside of the fuse box cover for the most accurate information for your specific vehicle's trim level.

Relay Locations (Underhood Fuse Block):

• RL1: Fuel Pump Relay
• RL2: Starter Relay
• RL3: A/C Compressor Clutch Relay
• RL4: Headlight High Beam Relay (Left)
• RL5: Headlight High Beam Relay (Right)
• RL6: Cooling Fan Relay 1
• RL7: Cooling Fan Relay 2

Instrument Panel Fuse Block

The instrument panel fuse block primarily controls interior electrical accessories and systems. This fuse box is located on the passenger side of the dashboard, accessible by removing the trim panel. Always consult your owner's manual for the exact location and a detailed diagram.

Rear Underseat Fuse Block

This fuse block is located under the second-row seat on the driver's side and typically handles power for rear accessories and features, including those for the cargo area.

How to Test a Fuse

Testing a fuse is a straightforward process that can help you diagnose electrical issues. You'll need a fuse puller (often found in the fuse box lid) and a multimeter or a 12V test light.

1. Locate the Suspect Fuse: Refer to the appropriate fuse box diagram and identify the fuse corresponding to the non-functioning component.
2. Remove the Fuse: Carefully use the fuse puller to remove the fuse from its slot.
3. Visual Inspection: Hold the fuse up to the light. If the metal wire or filament inside is broken or melted, the fuse is blown and needs replacement.
4. Test with a Multimeter (for a more accurate test):
   • Set your multimeter to the continuity setting (usually indicated by an audible beep or a horseshoe-shaped symbol).
   • Touch one probe of the multimeter to each metal blade of the fuse.
   • If the multimeter beeps or shows a reading of zero or close to zero ohms, the fuse is good. If there's no beep or an "OL" (open loop) reading, the fuse is blown.
5. Test with a 12V Test Light:
   • Connect the alligator clip of the test light to a good ground point on the vehicle.
   • Touch the probe of the test light to the small metal test points on the top of the fuse (most modern fuses have these). Do this on both sides of the fuse while it's still in the fuse box.
   • If the test light illuminates on both sides, the fuse is good. If it only illuminates on one side or not at all, the fuse is blown.

Always replace a blown fuse with a new one of the exact same amperage rating and type. Using a fuse with a higher amperage can lead to serious electrical damage or fire.

Common Blown Fuses on this Vehicle

While any fuse can blow, some are more commonly encountered due to their circuits' usage or design. On a 2016 Chevrolet Suburban, here are a few common contenders and what to check first:

• Cigar Lighter/12V Power Outlets (Instrument Panel Fuse Block - F2, F10, Rear Underseat Fuse Block - F1): These fuses are frequently blown due to overloads from charging devices, air compressors, or other accessories. Check the device you were using when the outlet stopped working. If the fuse blows again immediately after replacement, there might be a short in the wiring or the outlet itself.
• Blower Motor (Underhood Fuse Block - F3): If your HVAC fan stops working entirely, this is a prime suspect. Before replacing, ensure nothing is impeding the blower motor (e.g., debris). A failing blower motor can draw excessive current and blow the fuse.
• Radio/Infotainment System (Instrument Panel Fuse Block - F1): If your radio suddenly goes dead, this fuse is a good place to start. Sometimes, aftermarket installations or short circuits within the unit can cause this.
• Trailer Brake Control (Underhood Fuse Block - F13): If you experience issues with your trailer brakes, check this fuse. Often, a short in the trailer's wiring itself can cause this fuse to blow. Inspect the trailer wiring and connections for any damage or corrosion.
• Headlights High Beams (Underhood Fuse Block - F10, F11): If one or both of your high beams are out, but low beams work, check these fuses first. Blown headlight bulbs can sometimes cause the corresponding fuse to blow, though it's less common than a wiring issue.

Always remember to check the fuses associated with the non-working component first. If the fuse is good, the problem lies elsewhere in the circuit.

Find a trusted shop on Repairius.