Conversation Between kenwowski and bma4573

I've seen your posts about the Blend Door TSB, and I have the same truck as you (07' Lariat 4x4). I got in my truck this morning and turned on the heat, and even when turned all the way up, with the recirculate button push it's only warm air at best. I'm not sure if I get the buzzing sound on startup, but it's always made noticeable noise when moving between hot and cold, or head to feet. I just wanted to get your opinion on this, especially since the TSB talks about turning the knob for temp control and mine is all electronic button controls (I'm assuming yours is too). I also wasn't sure if TSB's were cover by FORD, as my truck is out of warranty. Any help you can offer would be greatly appreciated. Thanks.

Brian Allshouse