The GMC Acadia parking light utilizes 7444NA, 7443NA, and 194NA bulb sizes depending on the specific version of the vehicle. Available data covers the range from 2007 to 2019 for the components mentioned.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The GMC Acadia front parking light specifications cover model years 2007 through 2019 and reference three bulb sizes: 7444NA, 7443NA, and 194NA.
The 194NA is a miniature T10 wedge bulb rated at 12V and 3.78W. It is a single-filament design, meaning it serves one lighting function per socket.
The 7443NA and 7444NA are both dual-filament T20 wedge bulbs rated at 12V with a 21W/5W output. The two filaments allow a single bulb to operate at two distinct brightness levels within the same socket.
The "NA" suffix on all three bulb types denotes natural amber glass, which produces an amber-colored output without the use of a separate colored lens or filter.
All three bulb sizes conform to ANSI standards recognized in both the United States and Canada, indicating a standardized physical and electrical specification across those markets.
The GMC Acadia (2007-2012) front parking light positions use the 194NA bulb, a physically smaller T10 form factor that is not interchangeable with the larger T20 bulbs used in later model years.
Model years 2013 through 2019 use either the 7443NA or 7444NA, both of which share the T20 wedge form factor and identical voltage and wattage ratings, though they carry distinct ANSI part numbers.
Because the 7443NA and 7444NA share the same T20 base, voltage, and wattage ratings, the distinction between them relates to differences in their base contact configuration, which affects physical fitment in the socket.
The front parking light position for the 2019 Acadia lists the 7444NA in both data rows present in the specifications, while the 2017 and 2018 positions reference both the 7444NA and 7443NA across separate rows, indicating that more than one bulb size may apply depending on the specific socket or trim configuration.
The shift from the 194NA to the 7444NA/7443NA family between the 2012 and 2013 model years represents a change in both physical bulb size and wattage, as the T20 dual-filament bulbs operate at a significantly higher wattage than the 3.78W T10 unit used in earlier years.