GMC 2006 DURAMAX Manual page 37

3. Remove the filter element. If there is any dirt on the
filter sealing surface, clean it off. Remove and reuse
the water sensor float switch located on the bottom of
the fuel filter.
4. Install the new filter element.
5. Reinstall and tighten the filter container and
reconnect the water sensor wire to the filter.
6. Use the fuel filter priming procedure earlier in this
section to prime the fuel filter.
7. Tighten the air bleed valve by turning it clockwise
until hand tight.
8. Start your engine and let it idle for five minutes.
Check your fuel filter and air bleed valve for leaks.
2. Unplug the water
sensor wire connected
to the fuel filter and
unscrew the filter
element.
9. Reset the fuel filter monitor. See Driver Information
Center (DIC) (Pickup Models Only) on page 3-9 for
more information.
Van Models
If your fuel operated heater (FOH) is not working, your
FOH line requires priming. See your dealer for service.
See Fuel Operated Heater (FOH) (Van Models Only) on
page 2-8 for more information.
If you want to change the fuel filter yourself, here's how
to do it:
CAUTION:
{
Diesel fuel is flammable. It could start a fire if
something ignites it, and you could be burned.
Do not let it get on hot engine parts, and keep
matches or other ignition sources away.
First, drain any water from the filter following the
procedure for draining water listed previously.
Your vehicle's engine should be off until the end of this
procedure.
The fuel filters are located on the driver's side frame rail
in front of the fuel tank.
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