* Year/Model Compatibility: One part number might be for a specific model year or trim level of Silverado, while the other is for a different year or trim. GM often revises parts even for similar systems across model years.
* Number of Lights/Length: The systems could have a different number of LED lights or cover a different length of the truck bed.
* Wiring Harness: The harness connecting the lights to the vehicle's electrical system might be different between the two part numbers. This could include differences in connector types or wire gauges.
* Light Features: Minor differences in the LED light themselves could exist – perhaps differing brightness, light color temperature (kelvin rating), or even lens design.
* Superseded Part: One part number might be superseded (replaced) by the other. This means the older number is no longer actively produced, and the newer number is the current replacement.
To find the exact difference, you should:
* Check a GM parts website: Sites like gmpartsdirect.com or similar will allow you to input the part numbers and see detailed descriptions and potentially diagrams showing the differences.
* Consult a parts catalog: An online or physical GM parts catalog will offer the most comprehensive information.
* Contact a GM dealership: A parts department at a local Chevrolet dealership would have access to the most up-to-date information on these part numbers.
Without access to these resources, any further speculation on the difference would be purely conjecture.
