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Vehicle Speed Sensor

For Vehicle Speed Sensor (VSS) testing, perform the following diagnostic test:

On 4.7L, see DTC P0501: VEHICLE SPEED SIGNAL PERFORMANCE under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - DURANGO - 4.7L article.
On 5.9L, see DTC P0500: NO VEHICLE SPEED SIGNAL under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - DURANGO - 5.9L article.