In an effort to urge car owners to fix their faulty ignition switches, General Motors is offering gift cards.

The automaker has recalled millions of vehicles, but say almost half haven't been fixed.

Though it's unknown how many recalled vehicles are no longer on the road, any vehicle with a serious recall that hasn't been serviced can pose a threat to other drivers and pedestrians.

If owners bring in their defective cars before December 1, they can choose a $25 gift card for Amazon, AMC, Applebee's, Bass Pro Shops, Red Robin, Starbucks or Walmart, according to Automotive News.

The faulty ignitions have been tied to at least 29 deaths.