Chevrolet Silverado 2017–2018 — technical service bulletin
Bulletin 17NA110 · NHTSA communication 10139226 · issued Dec 4, 2017
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2018
model years
5
vehicle entries
Official summary
This technical bulletin provides a procedure to Add 1 quart of coolant to the upper chamber of the surge tank in order to bring the level up to the bottom of the fill neck to correct a condition of the coolant surge tank appears low and/or a low coolant message displayed intermittently due to the fill process at the plant cannot purge all of the air from the cooling system and surge tank.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.