The ATK GV250 uses 5008 bulb size for both front and rear turn signal applications. The replacement chart covers 2011 to 2014 vehicle production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The ATK GV250 uses the 5008 bulb in both its front and rear turn signal positions across the 2011-2014 model years.
The 5008 is an ANSI-standardized bulb type recognized in the United States and Canada, operating at 12 volts.
It is a single-filament bulb, meaning it serves one lighting function rather than combining two, such as stop and tail, into a single unit.
The 5008 uses a BA15s bayonet base, a single-contact mount where the bulb locks into its socket with a twist, with the "s" denoting a single contact at the base center.
The 5008 is a lower wattage variant of the 1156 bulb, sharing the same BA15s base type but drawing less power, which makes the two non-interchangeable in applications where wattage affects turn signal flash rate or circuit load.
Because both the front and rear turn signal positions on the GV250 share the same bulb specification across all four model years, a single bulb type services all four signal positions on the vehicle.