Here's a general guide. Consult your owner's manual for the most accurate instructions specific to your truck. The manual will have diagrams and may specify different procedures for high and low beams.
Step 1: Access the Headlight Assembly
Most likely, you'll need to access the headlights from behind the front bumper or grille. This often involves:
* Removing parts of the front bumper or grille: This might involve removing screws, clips, or other fasteners. Be careful not to break anything.
* Possibly removing the wheel well liner: This can provide better access to the back of the headlight.
Step 2: Locate the Bulb and Disconnect
Once you have access to the back of the headlight assembly, you should see the bulb(s). You'll likely see the low beam bulb and the high beam bulb separately, usually identified with markings or by their location in the assembly.
* Disconnect the electrical connector: Gently unplug the electrical connector from the back of the bulb.
* Release the bulb: There's usually a retaining clip or ring holding the bulb in place. This could involve twisting, pulling, or pushing a tab. Again, your owner's manual will be your best guide here.
Step 3: Replace the Bulb
Carefully remove the old bulb. Do not touch the glass part of the new bulb with your bare fingers; the oils from your skin can shorten its lifespan. Use a clean cloth or glove if necessary. Insert the new bulb, making sure it's seated correctly in the housing.
Step 4: Reconnect and Reassemble
Reconnect the electrical connector. Reinstall the retaining clip or ring to secure the new bulb. Then reassemble the front bumper, grille, or wheel well liner, making sure everything is securely fastened.
Step 5: Test
Reconnect the negative battery terminal. Turn on your headlights and check that both the high and low beams are working correctly.
Important Considerations:
* Sealed Beam Headlights: Some 1994 Chevy trucks might have sealed beam headlights, where the entire headlight assembly is a single unit. If this is the case, you'll need to replace the entire assembly, not just the bulb.
* Bulb Type: Know the correct type of bulb for your truck's headlights. This information should be on the old bulb or in your owner's manual. Common types include H4 (dual filament for high and low beam in one unit), H6024 (single filament low beam), and 9003 (high beam).
* Tools: You might need basic tools like screwdrivers (Phillips and flathead), pliers, and possibly a socket wrench.
If you're uncomfortable performing this task yourself, it's best to take your truck to a qualified mechanic. Improperly installed bulbs can lead to damage or safety hazards.
