Chevrolet 2007 Silverado 1500 Pickup Owner's Manual page 150

FIRST (1): Press the clutch pedal and shift into
FIRST (1). Then, slowly let up on the clutch pedal as
you press the accelerator pedal. Shift into FIRST (1)
only when the vehicle is below 5 mph (8 km/h).
Notice: If you try to shift down into FIRST (1) at
excessive vehicle speeds, clutch or engine
damage could occur. Do not shift into FIRST (1)
unless you are going less than 5 mph (8km/h).
SECOND (2): Press the clutch pedal and shift into
SECOND (2). Then, slowly let up on the clutch
pedal as you press the accelerator pedal.
You can shift into SECOND (2) when you are
going less than 20 mph (32 km/h). If you have
come to a complete stop and it is hard to shift into
SECOND (2), put the shift lever into NEUTRAL and
let up on the clutch. Press the clutch pedal back
down. Then shift into SECOND (2).
Notice: If you try to shift down into
SECOND (2) at excessive vehicle speeds, clutch
or engine damage could occur. Do not shift into
SECOND (2) unless you are going less than 20
mph (32km/h).
THIRD (3): Press the clutch pedal and shift into
THIRD (3). Then, slowly let up on the clutch pedal
as you press the accelerator pedal.
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FOURTH (4) and FIFTH (5): Shift into the higher
forward gears the same way you do for THIRD (3).
Slowly let up on the clutch pedal as you press the
accelerator pedal.
To stop, let up on the accelerator pedal and press
the brake pedal. Just before the vehicle stops,
press the clutch pedal and the brake pedal, and
shift to NEUTRAL.
NEUTRAL: Use this position when you start or
idle your engine.
REVERSE (R): To back up, first press down the
clutch pedal. Wait for the vehicle to stop moving
and then, shift into REVERSE (R). Let up on
the clutch pedal slowly while pressing the
accelerator pedal.
Notice: Shifting to REVERSE (R) while your
vehicle is moving forward could damage the
transmission. The repairs would not be covered
by your warranty. Shift to REVERSE (R) only
after your vehicle is stopped.
Also, use REVERSE (R), along with the parking
brake, when turning off your engine and parking
your vehicle.