make-your-own-ad contest In 2006, the 2007 Tahoe was featured on and promoted through Donald Trump's TV series, The Apprentice, where the two teams put together a show for the top General Motors employees to learn about the new Tahoe. Also, The Apprentice sponsored a controversial online contest in which anyone could create a 30-second commercial for the new Tahoe by entering text captions into the provided video clips; the winner's ad would air on national television. An early example of user-generated marketing, headed by ad agency Campbell Ewald, the campaign began to backfire when hundreds of environmentally conscious parodies flooded YouTube and Chevy's website critiquing the vehicle for its low gas mileage. Over 400 negative ads were created in total; however, over 20,000 positive ads were created which Chevrolet viewed as successful, despite the negative media attention. Engines Fourth generation (2015) The Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon, GMC Yukon XL, Cadillac Escalade, and Cadillac Escalade ESV had a shortened 2014 model year starting in June 2013, and was replaced with a new version in February 2014 as a 2015 model. The Tahoe and Yukon are built on the GMT K2XX platform and assigned as K2UC (for Chevrolet Tahoe) and K2UG (for GMC Yukon). Production on the Tahoe and Yukon began in December 2013 with the first completed SUVs being used for testing purposes, and started officially shipping the vehicles to dealerships on February 5, 2014. The 2015 Tahoe was later named the fastest-selling vehicle for February 2014, averaging seven days of sales upon its release. On September 12, 2013, GM released photos and press release of the fourth-generation Tahoe and Yukon. Like its larger siblings Suburban and Yukon XL, the front fascias of the Tahoe and Yukon are distinct, but from the base of the A-pillars back, they share most of the same styling cues. This now includes inlaid doors that tuck into the door sills, instead of over them, improving aerodynamics and fuel economy, and lessens interior noise. The hoods and liftgate panels now are made of aluminum in an effort to reduce vehicle weight. A more-efficient, direct-injected EcoTec3 powertrain coupled with improved aerodynamics help increase fuel economy for the SUVs. Both fourth-generation SUVs do not share a single piece of sheetmetal or lighting element with the brands' full-size pick-up trucks, and the front grilles of both vehicles are slightly altered to give them their own identity. The