Lingenfelter L320030709 Lingenfelter CTS-V Intercooler Radiator Kit 2009-13 v1.1 - Manual (Page 5)

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1. If you have been using the vehicle, allow
the vehicle to cool before beginning this
installation.
4. Remove the front wheels.
3. Disconnect the ground terminal from the
vehicle’s battery using a 10 mm wrench.
The battery is located in the trunk on the
passenger side of the vehicle.
WARNING: be careful not to short
the wrench across the terminals. We
recommend using an insulated wrench for
safety reasons.
2. Raise and properly support the vehicle,
either on a hoist or with a jack and jack
stands, using the GM specified lift locations
for the vehicle.
Consult your owner’s manual for details on
the proper jacking/lifting points.