We just took delivery of a 2017 Yukon SLT. The brochure and GM adverting says that the second and third row seats fold flat for cargo. There is a substantial incline from the back of the vehicle the the second row seats when the second and third row seats are folded "flat". The owners manual states that if the second row seats do not fold flat, they may be too close to the front seats. Well I made sure the front seats are well forward but the second nor third row seats do not fold anywhere near flat. Is there something that I am not doing correctly or is this just false advertising?