Check the driver-side dash panel and match each numbered slot with the printed legend before removing any insert, then test both контакts with a multimeter to confirm power flow.
This full-size pickup uses a cabin-mounted electrical panel that distributes current to systems like radio, power windows, dashboard cluster, and climate controls. Each slot is labeled with a number and linked to a specific circuit, along with an amperage value such as 10A, 15A, or 20A.
Frequent faults include non-working accessories like power locks or interior lighting, often traced to a single blown link rather than component failure. Matching the slot number with its function helps isolate the issue without removing multiple parts.
Inspect each insert for a broken metal strip, heat marks, or loose fit inside the panel. Replace only with the same rating and press firmly into place to maintain stable contact across the terminals.
2002 Chevy Silverado Interior Fuse Box Diagram with Circuit Assignments
Locate the driver-side dash panel and use the numbered layout on the cover to match each slot with its assigned circuit before removing any insert, then verify current with a test light.
Positions 1 to 5 typically control dashboard cluster, warning indicators, and lighting circuits, with ratings between 10A and 15A. If gauges fail or backlighting stops, inspect these slots first.
Slots 6 to 10 are linked to power accessories such as windows, locks, and mirrors. A single blown insert in this range can disable multiple door functions at once.
Audio and Climate Control Circuits
Mid-range positions handle radio, HVAC control head, and accessory outlets, usually rated at 15A or 20A. Loss of sound or unresponsive climate settings often traces back to these numbered locations.
Ignition and Control Modules
Higher-numbered slots connect to ignition switch signals and control modules. Intermittent starting or no response when turning the key may point to these circuits rather than the starter itself.
Check each insert for a broken metal strip, discoloration, or loose fit, and replace only with identical amperage. Press firmly into place to ensure stable contact and prevent intermittent electrical faults.
Under dash fuse panel layout with slot numbers and component functions
Remove the lower trim beneath the steering column and read the numbered grid printed on the panel cover to identify each circuit before pulling any insert.
The layout is arranged in rows with sequential numbering, each position tied to a specific electrical function and amperage rating. Numbers correspond directly to the legend, which lists the protected system.
Common slot assignments include:
- 1–3: instrument cluster, warning lights, dashboard illumination
- 4–6: radio system, accessory outlets, retained power circuits
- 7–9: power windows, door locks, mirror controls
Higher-numbered positions often handle ignition-related signals and control modules. These slots may affect starting behavior, key detection, and communication between onboard systems.
Low and mid amperage circuits
Lower ratings such as 5A and 10A are used for sensors and lighting, while 15A to 25A supports motors and accessory devices. Matching the rating exactly prevents wiring damage or repeated failure.
Reading slot functions accurately
Follow this sequence to verify a circuit:
- Find the slot number on the panel
- Check the legend for its assigned system
- Confirm amperage stamped on the insert
- Test continuity across the metal strip
Inspect terminals for looseness or discoloration, as poor contact can interrupt current flow without a visible break. Ensure each insert is fully seated to maintain stable operation across all connected systems.