Chevrolet 4500HD Series 2019 Manual page 156

Symptom
Engine does not Starter does not
start turn over, or weak
Cause
Discharged batteries
Battery terminals
detached, loose,
or corroded
Starter ground wire
terminal detached,
loose, or corroded
Engine oil viscosity
too high
Starter or electrical
system is faulty
Driving and Operating
Corrective Action
Recharge or replace
After repairing corroded
section, connect the
terminals firmly
After repairing corroded
section, connect the
terminals firmly
Change to an oil with
proper viscosity
155
Reference
See Battery - North
America 0 269
-
-
See Engine Oil
0 245
-