2008 GMC ENVOY engine overheat

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Page 295 of 468

GMC ENVOY 2008  Owners Manual Service............................................................5-3
Accessories and Modi�cations..........................5-3
California Proposition 65 Warning.....................5-4
California Pe

Page 317 of 468

GMC ENVOY 2008  Owners Manual Automatic Transmission Fluid
When to Check and Change Automatic
Transmission Fluid
A good time to check your automatic transmission �uid
level is when the engine oil is changed.
Change the �uid and �l

Page 320 of 468

GMC ENVOY 2008  Owners Manual Engine Coolant
The cooling system in your vehicle is �lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for �ve years or 150,000 miles
(240 000 km), whichever occu

Page 321 of 468

GMC ENVOY 2008  Owners Manual Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crac

Page 322 of 468

GMC ENVOY 2008  Owners Manual Adding Coolant
If you need more coolant, add the proper DEX-COOL®
coolant mixture at the coolant recovery tank.
{CAUTION:
Turning the radiator pressure cap when the
engine and radiator are hot can al

Page 323 of 468

GMC ENVOY 2008  Owners Manual If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can burn
you badly, even if you just open the hood. Stay
away from the engine if you see or hear steam
coming from it. Jus

Page 324 of 468

GMC ENVOY 2008  Owners Manual If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning does not come back on, you can drive
normally.
If the warning continues an

Page 326 of 468

GMC ENVOY 2008  Owners Manual How to Add Coolant to the Coolant
Recovery Tank
If you have not found a problem yet, but the coolant
level is not at the FULL COLD mark, add a
50/50 mixture of clean, drinkable water and DEX-COOL
®
e
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