Diesel Place : Chevrolet and GMC Diesel Truck Forums - View Single Post - 2015 Coolant Levels - LML
View Single Post
Old 06-18-2019, 11:08 AM   #6 (permalink)
Diesel Pro
Rvn4me's Avatar
Join Date: Jun 2016
Location: MI.
Posts: 2,449

The manual says to remove the cap on the coolant reservoir when the engine is cold. Add coolant until the level is at the Min line on the pressurized side of the tank. With the cap still removed start the engine and wait until the temp reaches 196 deg F.
Then slowly keep adding coolant. Once the first tank (the pressurized side) reaches the full/min line it will spill over into the non-pressuried side (second tank). Keep adding coolant untill the second tank is 1/3 full. Replaced the cap. Then check the level in the tanks in a day or so when the engine is cold to see if it changed.
If the coolant level is still low after having followed these steps twice, have the coolant system checked by a certified technician at the dealer for a possible leak.

Page 10-22 https://my.chevrolet.com/content/dam...sel-Manual.pdf

Last edited by Rvn4me; 06-18-2019 at 11:23 AM.
Online   Reply With Quote