Chevrolet Silverado 4500HD 2022 Manual page 373

372 Technical Data
*Cooling system refill capacities vary considerably due to differences in engine models and optional equipment, in addition to the amount of
coolant remaining in the system after draining. Total capacity is approximately 28.3 L (7.5 gal).
If the system has been flushed with water or cleaner, a significant amount of the rinse water will remain in the system. In this case,
refilling with a mixture with a higher percentage (60 66%) of coolant concentrate is advised in order to achieve a final mixture closer to 50/
50. Fill the system and run the vehicle until the thermostat opens. Before adding any fluid, check the coolant concentration and add
additional water or concentrated undiluted coolant to adjust the concentration. Run the vehicle and retest for coolant volume level (set to
MAX line) and concentration level.
**Do not overfill the DEF tank. See Diesel Exhaust Fluid 0 208.
A variety of transmissions are available for your vehicle. Refer to the Allison Automatic Transmission Manual for the most up-to-date specific
service instructions, required capacities, and transmission fluids.
All quantities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this manual. Recheck fluid level
after filling.
Engine Specifications
6.6L 8-Cylinder Turbo Diesel (L5D Engine)
Application
Engine
Capacities
Metric
VIN Code
PV
English
Type
V8