GMC 2003 Envoy - Manual (Page 323)

If No Steam Is Coming From Your
Engine
li ygu get an engine Qverheal warning but see or hear
no steam, ihe problem may not be loo serious.
Sometiines the engine can get a iitUe loo ho! when you;
• Climb a long hill on s hoi day.
• Stop after high-speed driving.
• (dte for long periods m traffic-
• Tow a trailer.
II you get the o\/erheat warning with no sign of stearin,
Iry this lor a TTiinuto or so:
1 In heavy iraHic, let the engine idle in neuira! while
stopped (t it is safe lo da so, pull off the road, shrfi to
PARK iP} or NEUTRAL fN) and let the engine idle.
2 Turn on your healer to fuil hot at the highest fan
spaed and Open the wiocfow as necessary.
II you no longer have the overheat warning, you can
drive Just to be sate, drive slower (or about 10 minuiea.
IF the warning doesn't coma back on, you can drive
normally.
II the warning conlinues and you have not stooped,
pull over, slop, and parh your vehicle right away,
II there's still no sign of steaim, you can push down the
acceloraior until the engine speed is aboul twica as
fast as nornnai idle speed for at least three minutas while
you're parked. If you slifl have the warning, Sufn oft
Ihe engine ^nd gel everyone oLr,f of the vehicle until il
cools down.
You may decide not to 11 Fl the hood bui lo gel service
help fight away.
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