Confirm the complaint
Determine whether both horns are silent and whether the symptom is constant or intermittent.
BODY ELECTRICAL · 2002 · HORNS
2002 Firebird Horns Inoperative
A silent horn system can be horn units, feed/control, wiring or steering-wheel command. Diagnose the circuit before replacing parts.
APPLICATION: 2002 Pontiac Firebird / Formula / Trans Am. Configuration-specific equipment must match the vehicle before applying a circuit path.
Inspect accessible components
Check connectors, wiring and horn mounting/condition before deeper diagnosis.
Separate command from output
Verify the horn circuit receives a command and that usable power/ground reaches the horn side under load.
SIR SAFETY GATE
Do not probe or disassemble steering-wheel/SIR components casually. Follow the factory SIR disabling procedure before service that enters the airbag area.
FPV RULE
OBSERVE → MEASURE → ISOLATE → PROVE → REPAIR → VERIFY. A symptom or DTC is a starting point, not a parts verdict.