What would case a 1995 buick park avenue to blow a fuse when adjusting the power seats only when trying to recline back?

Answer 1

Regardless of the make and model of your vehicle, AND AS A MATTER OF FACT, ANY TIME a fuse "blows," it does so because the circuit in which it is located, and which it is intended to PROTECT, has experienced either a SHORT CIRCUIT, or some kind of overload event which has cause more electric current to flow through the circuit than the wire(s) is capable of carrying. Since you say that the fuse failure occures when trying to recline the back "only," that indicates that it is that portion of the several circuits [one for each function [up-down, forward-back, etc.] of the seat control. Find the solenoid/motor which controls the seatback position, then carefully trace the wires from that device, particularly the HOT wire which carries battery current to that motor. Look for wire on which the insulation has been partially cut through, or pinched against or by a sharp grounded metal edge of the seat frame or the vehicle's body sheet metal. Once the short has been removed, and the insulation repaired or replaced, the fuse should not fail with use of the seat recliner. On the other hand, IF there are no shorts in the wiring or switches, it is possible that the problem is in the recliner motor, or the solenoid controlling it. Good luck.j3h.

I had a similar problem with my driver's seat recliner. The reclining adjuster motor just didn't run anymore. The cause was found to be lack of lubrication of the drive cables that come out of the small motor located under the seat right in the center of the seat. I sprayed WD-40 on the drive shaft of both sides of the small motor and then on the input shafts of the gear boxes on both left and right hinges of the seat back. It solved the problem. While down there I also lubricated the other two motors and their respective gear boxes. Now the seat operates as new in all directions.