9 position power seats dont go back or forward in98 pontiac ssei

An issue you might have is you won't be able to adjust the forward/backward position of the seat without the power supply so your driving position will possibly be wrong for you. Another option is to use the auto seats as a donor and use those seat covers to recover your original seats.
A few measurements and there is a good chance it will fit. Measure the mount holes on the rails. Measure front to back along the rail and across the front and the rear. Compare these to the original seat.
Take a good look at the seat, Does it look the same? Measure across the widest part of the top of the seat base and the seat back and again compare it to the original.
Another thing to check is if you have a centre console between the seats that this won't get in the way when sliding the seat forwards and backwards.
**NOTE** Auto seats are A LOT heavier than manual seats so be careful lifting them in and out of the vehicle.

In short you can't.

check for something jamming the track under seat , try havin son push seat forward while pushin switch . i dont know of a way to override the seat motor if its dead,,auto wreckers for seat replacement cheapest way to go they may even install

You can replace it as long as the one you are replacing is the same set-up. If you have a manual adjusting seat and replace it with a power seat it will fit but you wont have the hook ups for it. Also make sure if it is a bucket seat (single person) you dont replace it with a bench (3 persons fit in front) seat or you will run into problems with the center console and shifter. vice versa may bolt up but there will be a gap between the 2 front seats

I tired a new switch becauuse of th seat not going foward or backward, the other positions worked. The module needed replacing, the mechanic ordered a new one, but it was a different number. He could not fing that module for the passenger power seat1 any suggestions?

On W-Body vehicles, the front seats are secured to the floorpan by two front hook attachments and two rear bolts installed to nuts welded to the floorpan.
The manually operated two-way front adjusters provides only fore and aft movement of the seat. When the seat adjuster handle located on the front seat is pulled up, the seat adjusters unlock, permitting travel of the seat. When the seat is in the desired position and the seat adjuster handle is released, the seat locks in place.
A power operated six-way seat adjuster is available. The adjusters are activated by three 12 volt, reversible, permanent magnet motors with a built-in circuit breaker. The motors are energized by a switch bolted on the seat side panel.
The three motors drive the front seat and rear vertical actuators and a horizontal actuator. When the adjusters reach the limit of travel, torque is absorbed through the rubber mounted grommets located between the motor and the support. An overload relay is provided in the circuit and will open should excessive stall be applied.
The optional 60/40 split bench front seats have seat back head restraints on the driver's and passenger's seat back. The head restraints are designed so they cannot be removed from the seat back without first inserting a small rounded tool inside the head restraint support tube to release the locking tab. The 60/40 split bench seat is equipped with a reclining mechanism on both the driver's and passenger's side. The recliner lever is located on the outboard side of the spring cushion. When the lever is pulled upward, the spring loaded dual linear reclining unit located in the cushion frame is released, allowing the seat back to be pushed rearward or allowing the spring loaded reclining unit to bring the seat back forward.
Bucket seats are equipped with manual reclining mechanisms. An optional six-way power seat adjuster is available. Some bucket seats are equipped with inertia seat back locks. This system allows the seat back to fold forward without requiring the occupant to release a locking lever or access to the rear seat area. During a sudden stop or deceleration, or if the front of the vehicle is nose down, the inertia system of the seat back lock will engage, holding the seat back in its rest position. A release lever is provided to allow manual release of the seat back lock when the vehicle is in the nose down position. The release lever is located at the lower rear outboard corner of the seat back.
Some W-Body vehicles (notably Pontiac coupes) have passenger front seats equipped with an E-Z Entry device. This is actuated, in an unoccupied seat, by completely folding the seat back forward disengaging the adjuster, and sliding the front seat forward to gain access to the rear seat area. To return the seat to its normal position, return the seat back to its rest position, and slide the entire seat rearward, engaging the adjuster.
W-Body rear seats are available in several styles including a rear seat with an integral child restraint device.

just fixed a car with a similar problem. check your crankshaft positioning sensor, then replace the plate that the coils sit on, it has went bad. the coils should be fine but that plate tells it when to fire.

You can move the drivers seat back by turning on the power, getting in the seat and position your feet firmly on the fron flor with your back firmly against he seatback, and then engage the switch pushing back - while pushing like hell with your feet. You can actually hear the seat drive shaft turning while the seat moves back. The principle should be the same for moving forward, but pressure would have to be aplide to the back of the seat.

I had the same problem as you. Take out the back seat and there is a large access hole to the interior. There are two bolts that are fairly easy to get to. Remove them and the truck latch is removed from the lid and trunk will open.

I had the same problem, turned out there was a penny jammed in the track on the console side. Used needle nosed plyers and got the penny out, then used WD-40 and lubricated the tracks and it now works smoother than it did when I first bought the car.
Inspect the tracks because i bet you have something gummed up or jammed in there.
Good Luck

Simon
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