Headlight Switch compatible with Chevrolet Trailblazer; GMC Envoy
Direct replacement headlight switch for GM vehicles. Durable plastic construction with a 12-blade terminal male connector.
Key facts
- Part type
- Headlight Switch
- Type
- Aftermarket replacement
Compatibility matrix
Only models verified by our team are listed| Parts for | Model | This part |
|---|---|---|
| Gmc | GMC Envoy | Fits |
| Chevrolet | Chevrolet Trailblazer | Fits |
Only the models listed above have a confirmed catalog fit. If yours is absent, compatibility is unknown, not ruled out. Compare the exact model identifier and any published dimensions or connectors before ordering.
Where to find your model number
- Gmc, Chevrolet: Use your 17-character VIN. It's on the driver-side dashboard at the base of the windshield and on the driver's door jamb sticker. The year is in the 10th character. Also check your registration or the owner's manual.
General manufacturer guidance: exact label position can vary by model.
Headlight Switch specifications
- Material
- Plastic
- Connector Quantity
- 2
- Connector Shape
- Rectangular
- Terminal Quantity
- 12
- Terminal Type
- Blade
- Terminal Gender
- Male
Installation guide - Replacing a car switch
General guidance for this part type - always follow your device manual- Plastic trim tools
- Small screwdrivers
- If your switch sits behind the steering wheel, removing the wheel means removing the airbag. Leave that to a professional.
- 1Make it safe. Engine off, key out.
- 2Find how it is fitted. Window and dash switches usually pop out of their panel with a trim tool. Stalk switches sit behind the steering column covers.
- 3Remove the old switch. Lever it out gently at the edges or remove the column covers and its screws, then unplug the connector by pressing its tab.
- 4Fit the new switch. Plug the connector in until it clicks and press the switch into place, or screw it in and refit the covers.
- 5Test every function. Check each position (all windows, indicators, wipers, cruise) before final fitting.
This is general guidance for the part type, not a model-specific procedure. If the part does not fit without force, stop and recheck compatibility.
Maintenance check
Signs it's time to replace
- 01Light is out, dim or flickering
- 02Cracked, foggy or yellowed lens
- 03Moisture or water inside the housing
- 04Dashboard bulb-out warning
More parts for Chevrolet Trailblazer
See all Chevrolet Trailblazer parts
More parts for GMC Envoy
See all GMC Envoy parts
FP-19A79012 month warranty on every part
Every part we sell is covered for 12 months from delivery. If it fails in normal use, we replace it or refund you , claim it straight from your order page.
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Questions & answers
+Which models does this headlight switch fit?
Our team verified it for GMC Envoy, Chevrolet Trailblazer. The full list is in the compatibility table above.
+How do I make sure it fits my exact model?
Find the model number on your vehicle registration or VIN and compare it with the table above. Our fit guarantee covers verified models.
+What is the headlight switch made of?
Listed material: Plastic.
+Is it hard to install?
Install difficulty: Moderate · basic hand tools. Step by step instructions are on this page.
+How fast will it arrive?
This part is in stock in the USA: delivery within 3 to 8 business days, free shipping in the US.
+Is there a warranty?
Yes, a 12-month warranty is included, and you can extend it at checkout. Returns are accepted within 30 days.