Map the failure
Test left/right selection and every direction on both mirrors. The pattern helps separate shared switch/feed faults from one mirror circuit.
BODY ELECTRICAL · 2002
2002 Firebird Power Mirrors Inoperative Diagnosis
One dead mirror, one missing direction and both mirrors dead should not be treated as the same fault.
APPLICATION: 2002 Pontiac Firebird / Formula / Trans Am with the factory system described. Match options and installed hardware before applying a circuit path.
Inspect door wiring
Check accessible connectors, door-harness routing and prior door repairs. Intermittent operation with door movement is strong wiring evidence.
Verify command at the affected branch
Use the factory door-system diagram to prove switch output and circuit continuity before condemning the mirror actuator.
DO NOT BUY A MIRROR YET
The 2002 factory door diagnostics list power mirrors as a symptom path. Prove the local circuit first.
FPV RULE
OBSERVE → MEASURE → ISOLATE → PROVE → REPAIR → VERIFY. A symptom is a starting point, not a parts verdict.