Pontiac G5 Owner's Manual page 119

Shift Speeds
CAUTION:
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If you skip a gear when you downshift,
you could lose control of your vehicle.
You could injure yourself or others. Do
not shift down more than one gear at a
time when you downshift.
Up-Shift Light
United States Only
When this light comes on, you can shift to the next
higher gear if weather, road, and traffic conditions
let you. For the best fuel economy, accelerate
slowly and shift when the light comes on.
While you accelerate, it is normal for the light to go
on and off if you quickly change the position of the
accelerator. Ignore the light when you downshift.
If you have a manual
transaxle, you may have
an up-shift light. This
light will show you when
to shift to the next
higher gear for the best
fuel economy.
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