GMC 2.8L Duramax Diesel 2020 Manual page 37

36 Driving and Operating
Recommended
Problem Action
Immediately A large amount
after refueling, of water is in the
message fuel tank. Drain
displays and the fuel filter
stays on. immediately.
If the message
stays on or
comes back on
without
refueling, then
fuel tank purging
is required. See
your dealer.
If the message
displays and the
engine stalls or
runs rough, do
not drive until
the water
contaminated
fuel is drained.
Caution
Driving with this message on can
damage the fuel injection system
and the engine. If the message
comes on right after a refuel,
water was pumped into the fuel
tank. Turn off the engine and
drain the water immediately.
Removing Water from the Fuel
Filter
To drain water:
1. Turn the engine off and apply
the parking brake.
Van
Pickup