To be sure, you need to:
* Verify the specific model: Are they both Silverado/Sierra? A 1500 will likely be different from a 2500/3500. Even within the 1500, trim levels could have slight variations.
* Check the part numbers: The best way to know for certain is to find the part numbers for the fenders on both trucks. These numbers will be stamped on the fender itself (usually hidden somewhere) or can be looked up via a parts website with the VIN. If the numbers match, then they are interchangeable.
* Compare the fenders visually: If you have access to both fenders, compare them closely. Look for differences in size, mounting points, and any other details.
Without this information, it's impossible to give a definitive yes or no answer.
