Chevrolet 2008 Corvette Owner's Manual page 73

A weak battery may also cause the DIC to display NO
FOBS DETECTED when you try to start the vehicle.
If this happens, place the transmitter in the glove
box transmitter pocket with the buttons facing towards
the passenger's side. Then, with the vehicle in PARK (P)
for an automatic transmission, press the brake pedal
and the START button. If your vehicle has a manual
transmission, press the clutch and the START button.
Although this will start the vehicle, it is recommended
that you replace the transmitter battery as soon as
possible. The DIC may display FOB BATTERY LOW.
Notice: When replacing the battery, use care not to
touch any of the circuitry. Static from your body
transferred to these surfaces may damage the
transmitter.
1. Insert a flat object with a thin edge into the slot on
the side or back of the transmitter and separate the
bottom half from the top half.
2. Gently pull the battery out of the transmitter.
3. Put the new battery in the transmitter, positive (+)
side down. Use a battery, type CR2032, or
equivalent.
4. Reassemble the transmitter. Make sure to put it
together so water will not get in.
5. Test the transmitter.
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