Lingenfelter L320030709 Lingenfelter CTS-V Intercooler Radiator Kit 2009-13 v1.1 - Manual (Page 10)

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21. Remove the OEM power steering cooler
assembly.
23. To drain the intercooler system of coolant,
using a 3/8” square drive extension, remove
the drain fitting from the passenger side of
the intercooler radiator. Have a drain pan
positioned to catch the fluid.
Inspect the fluid. If it is normal in
appearance, it can used again. If it is
discolored then we recommend flushing the
system of the old fluid and using all new
intercooler fluid.
24. Using a pair of hose clamp pliers, release
the tension on the hose clamps and remove
both the in and out hoses from the stock
intercooler radiator.
Note: You will be re-using the stock hose
clamps and some of the stock hoses.
22. In order to make it easier to drain the fluid
from the system, remove the cap from the
intercooler fluid reservoir. The reservoir is
located at the back of the engine on the
passenger side near the firewall.