Chevrolet Low Cab Forward 6.7L Diesel Engine 6500XD (GMNA-Localizing-
U.S.-15749874) - 2022 - CRC - 12/1/21
270
Service and Maintenance
Coolant" in
. Have the
Engine Coolant replaced by your authorized
dealer.
15. Exhaust System :
Check the complete
exhaust system every 16 000 km
(10,000 miles). Check body areas near the
exhaust system. Look for broken, damaged,
missing, or out-of-position parts. Also inspect
for open seams, holes, loose connections,
or other conditions which could cause heat
build-up at the rear body floor pan, or could
let exhaust fumes seep into the passenger
compartment. Dust or water in the cabin
may indicate a leak in that area. Required
repairs should be made at once.
16. Diesel Particulate Filters (DPF) (Clean
Filter) :
Clean the filter every 320 000 km
(200,000 mi) or 6,500 hours whichever
occurs first.
17. Fuel Line System :
Inspect the fuel tank,
cap and lines for damage which could cause
leakage every 16 000 km (10,000 miles).
Inspect fuel cap for correct sealing ability
and indications of physical damage. Replace
any damaged or malfunctioning parts.
18. Brake Lining for Wear :
Check drum
brake lining and disc brake pad for wear or
cracks every 16 000 km (10,000 miles).
Check brakes more often if operating
conditions or driving habits result in
frequent braking. Minimum thickness is
6.3 mm (0.25 in).
19. Brake Drum for Wear and Damage :
Check brake drums (front and rear) for wear
or damage every 48 000 km (30,000 miles)
or 12 months whichever occurs first.
20. Brake Line and Hoses :
Check lines and
hoses for proper hook-up, binding, leaks,
cracks, chafing, etc. every 32 000 km
(20,000 miles). Any questionable parts
should be replaced or repaired at once.
When rubbing or wear is noted on lines or
hoses, the cause must be corrected at once.
21. Automatic Transmission Fluid :
Check the
automatic transmission fluid level at each
engine oil change and replace fluid every
240 000 km (150,000 miles). See the Allison
Automatic Transmisslon Operator's Manual
that came with the vehicle. It shows how to
check the automatic transmission fluid and
what fluid to use.
22. Automatic Transmission Filter :
Replace
the filter every 80 000 km (50,000 miles) or
every 24 months or 2,000 hours whichever
occurs first.
23. Differential Gear Oil :
Replace lubricant
every 36 months or 288 000 km
(180,000 mi). Check lubricant level every
16 000 km (10,000 mi) and add lubricant to
within 0 to 10 mm (0 to 0.4 inch) of the
bottom edge of the filler hole if necessary.
24. Power Steering Fluid :
Replace power
steering fluid every 12 months or 80 000 km
(50,000 miles), whichever occurs first.
25. Power Steering Oil Hoses :
Inspect every
16 000 km (10,000 miles), and replace as
necessary.
26. Steering Wheel Free Play :
Check
steering wheel free play after the first
1 040 km (650 miles) and then every
16 000 km (10,000 miles).
Steering wheel free play
10-60 mm (0.39-2.36 in)
