Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.
Check whether the passenger lock operates normally by hand and have its mechanism and electrical operation evaluated before choosing a relay or actuator. Provide the actual wiring-test results rather than assuming the circuit is good.
Source: Original question and visible replies. Owner reports and other participants' experiences are distinguished. Next steps are editorial guidance for obtaining diagnosis or clarifying the reported findings; they are not a verified repair procedure or an independently confirmed component diagnosis.
2000 Chev Silverado Passenger Door Lock
A 2000 Chevrolet Silverado extended-cab passenger door did not respond to the power-lock buttons, while the driver door continued to operate. The owner reported having checked the wires.
Reported outcome: No follow-up confirmed a cause or a successful repair.
A participant described a stiff lock on a different truck and suggested lubrication. That experience does not establish the cause on this Silverado.
