GMC T-Series 2007, Owner'S Manual

Page: 90 / 356

Manual Regeneration Procedure
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CAUTION:
During DPF regeneration, the exhaust
system and exhaust gases are very hot.
Stay clear of the tailpipe area and do not
park over things that burn. You or others
could be burned or your vehicle could
catch fire. See Parking Over Things That
Burn on page 86.
If the yellow or red DPF indicator is on, you
can clean the DPF by performing a manual
regeneration.
When it is safe to do so, stop the vehicle. Perform
manual DPF regeneration in a well ventilated area.
Manual DPF regeneration must be performed
outdoors, as follows. Once manual regeneration
is started, complete the regeneration in a single
operation if possible. If manual regeneration is not
completed, as indicated by the green DPF indicator
going off, in a single operation, automatic
regeneration might not be allowed until the vehicle
is stopped and manual regeneration is performed
until completed.
1. Check engine oil and engine coolant levels to
be sure they are at proper operating levels.
2. To prevent running out of fuel during
regeneration, make sure there is at least
a quarter of a tank of fuel.
3. Check to make sure the area near the
exhaust tailpipe and under the exhaust system
is clear of any materials that could catch
fire. Keep people away from the area of
the exhaust system and exhaust gases.
4. Fully set the parking brake.
5. Shift the transmission to PARK (P) or
NEUTRAL (N).
6. Idle the engine. If you used the idling control
knob to increase the engine speed, restore it all
the way to the left to reduce the engine speed.
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