Driver's side power seat trouble

[jpbplb]

New to forum, been lurking for about a week. I just bought a 2005 Tahoe LT with power seats. The raise & lower button for the back of the lowwer part of seat (this is the back part of the horizontal button control that can go up/down, not the seatback) has stopped working, but all the other controls work, i.e., forward/backward, front part of seat up/down, seatback reclined/upright, lumbar and support. When trying to use the control, it clicks, but no seat motor sound or movement. I don't suippose it is a simple fix, but the people posting here know a lot more about Tahoes than this bumpkin. Any thoughts are appreciated, even though I know very little about repairs (klutzy) Thanks.

 

[Grebbler]

Mine has power seats but the back is still controlled by a standard spring loaded mechanical lever below and to the rear of the electric controls.

Greb