Chevrolet Low Cab Forward 2016 Manual page 149

148 Driving and Operating
Symptom
Black exhaust smoke (Diesel)
Engine is overheating
Cause
Engine Control system
faulty
The air cleaner clogged
Fuel system faulty
Exhaust system clogged
Diesel particulate filter
(DPF) faulty
No engine coolant
Front of radiator is
clogged with dirt
Radiator cap not
sufficiently tightened
Fan belt loose
Engine coolant dirty
Fan clutch is faulty
Radiator cap dirty or
faulty
Corrective Action
Add engine coolant
Wash clean with tap
water
Make sure it is firmly
tightened or replace the
radiator cap
Adjust the tension or
replace the belt
Clean or replace
Reference
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See Engine
Coolant 0 254
See Exterior
Care 0 317
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See Engine Drive
Belt Routing 0 373
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