How do I change the fuel filter on a 2003 blazer?

1. Remove your gas cap to relieve any pressure on the tank.
2. If it is easy to see, then is a cap and valve stem assembly on the fuel injection supply rail. A small squeeze on this will relieve pressure on that end. (Use caution for a small amount of fuel may seep out.
3. Your fuel filter should be located along the frame rail underneath your vehicle. Probably about even with the your drivers side door.
4. Remove the filter using normal hand tools on one end. The other end may be fitted with plastic clips that squeeze together to release the fuel line. (If you happen to break a clip they are available at most auto supply stores in the "HELP" section)
5. Remember that you will lose some fuel so be prepared when you remove the filter. USE CAUTION when first breaking the lines apart.. just in case of any pressure..


Best of Luck, and let me know how you come out..