Black plate (35,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 6/5/14
Driving and Operating
9-35
Fuel Filter
1. Apply the parking brake.
2. Unplug the water sensor wire
connected to the fuel filter
(lowest wire) and unscrew the
filter cap.
3. Remove the filter element.
If there is any dirt on the filter
sealing surface, clean it off.
4. Install the new filter element.
5. Reinstall and tighten the filter
cap and reconnect the water
sensor wire to the filter.
6. Follow the vehicle fuel system
priming procedure earlier in this
section to re-prime the system.
7. Start the engine and let it idle for
five minutes.
Fuel Pump Screen
1. Apply the parking brake.
2. Unscrew the fuel pump
screen bowl.
3. Remove the filter element.
If there is any dirt on the filter
sealing surface, clean it off.
4. Clean the fuel pump screen and
fuel pump screen bowl o-ring.
5. Inspect the screen and o-ring for
damage. Replace as necessary.
6. Install the fuel pump screen and
o-ring.
7. Install the fuel pump
screen bowl.
8. Follow the vehicle fuel system
priming procedure earlier in this
section to re-prime the system.
9. Start the vehicle and let it idle for
five minutes.
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