Chevrolet Low Cab Forward 2016 Manual page 192

Stage
CAUTION
This message indicates incorrect DEF or an SCR system malfunction. Immediately contact
your dealer to have your vehicle serviced *2
Remarks:
*1 See Diesel Exhaust
Fluid (DEF).
*2 See Incorrect Diesel Exhaust
Fluid (DEF) /SCR System
Malfunction Warnings.
*3 The warning buzzer continues
to sound every 5 minutes.
*4 The warning buzzer continues
to sound every 5 minutes and when
driving 8 km (5 miles) or more, the
buzzer changes its sound to
continuous beeping.
DEF tank low stages are as follows:
DEF Tank Level is Low/Empty (cont'd)
Stage 1 Stage 2
Stage 1 : When the remaining level
of DEF becomes excessively low
the DEF gauge will change color
from green to amber. In addition,
warning and indicator lights will
come on as shown in the table and
engine power will be reduced so the
vehicle speed will not exceed
89 km/h (55 MPH).
Stage 2 : If driving is continued
without adding DEF (approximately
320 km (200 miles)) the DEF gauge,
warning and indicator lights will
begin blinking. Again, engine power
will be reduced so the vehicle speed
will not exceed 56 km/h (35 MPH).
Driving and Operating
Stage 3 Stage 4
Stage 3 : If driving is continued until
the DEF tank is empty, the DEF
gauge will change color from amber
to red and the warning and indicator
lights will begin to blink faster.
Engine power will still be reduced so
the vehicle speed will not exceed
56 km/h (35 MPH). The vehicle
speed will be limited to
8 km/h (5 MPH) either when the
vehicle is stopped after driving
further on (approximately
8 km (5 miles)) or when the engine
is restarted.
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