Manual

Notice: Using coolant other than DEX-COOL
®
can
cause premature engine, heater core, or radiator
corrosion. In addition, the engine coolant could
require changing sooner, at 50 000 km (30,000 miles)
or 24 months, whichever occurs first. Any repairs
would not be covered by the vehicle warranty.
Always use DEX-COOL
®
(silicate-free) coolant in
the vehicle.
Cooling System (Intercooler)
The 6.2L LS9 supercharged V8 engine has an
intercooler cooling system. See Engine Compartment
Overview on page 6-14 for location of the intercooler.
The intercooler cooling system has a special procedure
for draining and adding coolant. Because this
procedure is difficult, see your dealer/retailer for service
if the intercooler is low on coolant. The procedure
can also be found in the service manual. To purchase a
service manual, see Service Publications Ordering
Information on page 8-17.
Checking Coolant
1. Verify that the engine and intercooler are no
longer hot.
2. Place a cloth to absorb possible coolant loss under
the driver’s side bleeder valve (A).
3. Loosen, but do not completely unscrew the bleeder
valve to check for coolant in the system.
4. Tighten the bleeder valve if there is coolant flowing
out of the bleeder valve.
5. If there is no coolant flowing out of the bleeder
valve, there could be a leak in the system.
Tighten the bleeder valve and contact your
dealer/retailer for service.
6-35