This GM part went bad in my Silverado with just 35K miles. This Dorman replacement looks almost identical to the original GM part but the metal sensor tabs and contact board (which is what goes bad) look to be of better construction than the factory part. I have read stories of people replacing this part 2-3 times over the life of the GM vehicle. So far, 2K miles and this Dorman part is working as it should and at half the cost of the AC Delco part which is probably the same part just packaged for GM. NOTE: You will need to purchase a special tool to remove the compression ring that holds the fuel sending unit in the tank, it can not be removed with normal hand tools!