The tail lights on a 2014 Chevrolet Silverado typically use a 3157 dual‑filament bulb per rear corner, with the 3157A amber variant used on some trims or markets for the turn signal function.
Understanding the bulb type and its role
In the stock 2014 Silverado tail light assemblies, a single 3157 dual‑filament bulb is used in each rear corner. One filament powers the tail light, while the other powers the brake/turn signal. Some regional or trim differences may call for a 3157A amber bulb for the turn signal portion, though most US-spec trucks use the standard 3157 bulb.
Before you replace or buy bulbs, confirm the exact requirement by checking the bulb socket, the markings on the existing bulb, or the owner's manual. If your vehicle has an aftermarket or LED tail-light assembly, the bulb type may differ or bulbs may not be user‑replaceable.
Bulb options you may encounter
Below is a quick reference to the typical bulb types used in 2014 Silverado rear tail lights. Use this as a guide, but verify with the vehicle’s markings or manual before purchasing.
- 3157: Standard dual‑filament bulb used for tail/stop/turn on most US‑spec 2014 Silverado tail lights.
- 3157A: Amber variant used for the turn signal function on some trims/markets.
Keep in mind that some trucks may have different configurations due to trim level, market, or aftermarket replacements. If in doubt, consult the owner’s manual or remove the tail light housing to read the bulb size printed on the base or socket.
How to replace the tail light bulb
Replacing a tail light bulb on a 2014 Silverado is a straightforward DIY task. Below are the typical steps to perform the replacement.
- Park the vehicle on a flat surface, turn off the ignition, and open the tail light access area by removing the tail light mounting screws from the inside of the bed or by removing the tail light assembly from the outside, depending on your cab/bed configuration.
- Carefully pull the tail light assembly away from the truck to expose the bulb socket, then unplug the electrical connector.
- Remove the bulb socket by turning it counterclockwise and pulling it out of the housing.
- Pull the old 3157 (or 3157A) bulb straight out of the socket, being careful not to touch the glass with bare fingers.
- Insert the new bulb into the socket, ensuring it seats securely, then reinsert the socket into the housing and twist clockwise to lock.
- Reconnect the electrical connector, realign the tail light assembly, and reinstall the mounting screws. Test the lights before finishing reassembly to ensure the tail, brake, and turn functions all operate correctly.
Extra tips: Handle bulbs with clean gloves or a cloth to avoid oil from skin causing hot spots. If a new bulb doesn’t light, check the fuse related to the tail/ brake/ turn circuit and inspect the socket for corrosion or a loose connection.
Troubleshooting and notes
If your tail lights aren’t functioning after replacement, consider these possibilities: a blown fuse, a faulty socket, or a faulty vehicle body grounding. In some occasions, the turn signal may be on a separate bulb in certain trims, or an aftermarket LED tail light may require a specific bulb type or resistor.
Summary
In most 2014 Silverado tail lights, the replacement bulb is a 3157 dual‑filament unit per side, with the 3157A amber variant used for turn signals on some configurations. Always confirm by checking the bulb or manual, and follow proper replacement steps to ensure a safe, correct installation. If you encounter an LED tail light or aftermarket unit, refer to manufacturer guidance for replacement specifics.