One problem related to transmission noise has been reported for the 2008 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Ford F-150 based on all problems reported for the 2008 F-150.
We purchased a brand new 2008 Ford F-150 back in may, 2008. We have only put on it 27,000 miles and have never towed anything with it, we don't even have a trailer hitch on it. On Dec. 10, 2015 the "trans fault" light came on the dashboard while driving on a city street and the truck started making lots of noise and jumping into gear when you put it in "drive". We drove two miles to our home and got it in the driveway. After it was in the driveway, we tried to drive it to a repair shop and it wouldn't got into any gear, not even neutral so it couldn't be moved. On Dec. 11, 2015 we had it towed to a transmission shop where we had to replace the entire transmission or have it rebuilt. We decided to get a brand new transmission, it had a better warranty. Even the transmission guy with 38 years experience couldn't believe the transmission had to be replaced at 27,000 miles. I had contacted Ford but they wouldn't take any responsibility and said that there weren't any recalls.