Cadillac CTS 2008 Owner's Manual page 352

Notice: If you leave your radio or other accessories
on during the jump starting procedure, they could
be damaged. The repairs would not be covered
by your warranty. Always turn off your radio and
other accessories when jump starting your vehicle.
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter or the accessory power outlets. Turn off
the radio and all lamps that are not needed. This
will avoid sparks and help save both batteries. And
it could save the radio!
4. Open the hoods and locate the positive (+) and
negative (−) terminal locations or the remote
positive (+) and remote negative (−) terminals of the
other vehicle. Then locate the remote positive (+)
location on your vehicle. See Engine Compartment
Overview on page 5-14 for more information on
locations the terminals.
5-46
Your vehicle has a remote negative (−) ground
location, as shown in the illustration. It is located on
the rear passenger side of the vehicle. See Engine
Compartment Overview on page 5-14. You should
always use this remote ground location, instead of
the terminal on the battery.
Notice: If you connect a negative cable to the
Engine Control Module (ECM), ECM mounting
bracket, or any cables that attach to the ECM
bracket, you may damage the ECM. Always attach
the negative cable to your vehicle's remote negative
ground location, instead of the ECM, ECM bracket,
or any cables attached to the ECM bracket.