* A gear selector on the floor: This indicates a manual transmission.
* A gear selector on the column or console: This is usually an automatic transmission. However, some very rare models might have had a floor-shifted automatic.
The best way to be absolutely sure is to:
1. Check your vehicle's documentation: Your owner's manual will definitively state the transmission type.
2. Look at the sticker on the driver's side doorjamb: This sticker often lists options and may include transmission information.
3. Examine the transmission itself (if you're mechanically inclined): You might be able to identify it by looking at its casing. However, this requires some knowledge of transmissions.
Without looking at your truck, it's impossible to give you a definitive answer.
