GMC 2003 Sierra - Manual (Page 416)

How to Add Coolant to the Coolant
Surge Tank Gasoline Engines
II you haven't found a problem yel, check ro sea il
coolanf is visible in fhe surga tank. If coolant Is visible
but Ihe cotrianl level Isn't at or above (be FULL
COLD mark, add a 5ft'50 mi>rtiirs of chsn. cinnkabSe
tv-gferand DEX-COOL* coolanL el the coolani
surge lankf bul be sure ihe cooling eyatem, including
the cootant surge tank pressure cap, ts coot before you
do it.
See Engine Cociknt on page 5-33 Гог more
Iniomnalion.
1Г no coolant is visible in Ihe surge tenk, add oootani as
(olldws:
A CAUTION:
Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the coolant
surge lank pressure cap -
Even в little — they
CAUTION: (Continued)
CAUTfOM; (Continued)
can come out al high speed. Never turn the
cap when the cooling system^ including the
coolant surge tank pressure cap. is hot. Wait
for №e cooling system and coolant surge tank
pressure cap to coal if you ever have to turn
the pressure cap.
5‘-^l