GMC Envoy XUV front turn signal bulb size 3457 and rear turn signal bulb size 3057 represent the replacement bulb specifications for this vehicle model. The chart covers 2004 to 2005 model years with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The GMC Envoy XUV uses the 3457 bulb for the front turn signal across the 2004-2005 model years, and the 3057 bulb for the rear turn signal across the same span.
Both the 3457 and 3057 are dual-filament wedge bulbs classified under the T25 designation, meaning each bulb serves two lighting functions from a single housing.
Both bulbs operate at 12 volts with a wattage rating of 27W on the high filament and 7W on the low filament, a configuration typical of bulbs that handle both turn signal and parking light duties.
The 3457 and 3057 are governed by ANSI standards recognized in both the United States and Canada, placing them within a regulated performance and dimensional framework.
Although the 3457 and 3057 share the same T25 wedge base, voltage rating, and wattage values, they are specified for different positions on the Envoy XUV and are not listed as interchangeable within these specifications.