Installing window motor in 1990 olds 98

Sorry but there is no relay switch ! Go to www.bbbind.com free wiring diagrams .Check it out ! Your regulator is probably bad ! Is there B+ voltage at the switch , at the motor ?
Left Front Window Switch Operation
Place the ignition switch in the RUN position in order to supply battery voltage to the left front door lock and side window switch through the POWER WINDOW circuit breaker and the CKT 1001 (DK GRN). Press the left front window UP switch in order to supply battery voltage to the left front side window regulator motor through CKT 164 (DK BLU). The window motor is grounded through CKT 165 (BRN) and the window switch DOWN contact.
The regulator motor runs to drive the window to the UP position. Press the DOWN window switch in order to provide battery voltage to the window regulator motor in the opposite direction through CKT 165 (BRN). The window regulator motor is grounded through the CKT 164 (DK BLU) and the window switch UP contact. The motor runs in order to drive the window down.

The master switch is the one located on the drivers side. If this switch has a malfunction it can rob power from the passenger side causing the problem you have. If the regulator/motor are in working order and you know the passenger switch is ok then that could be the problem. Another couple of possible problems could be a broken wire in the harness traveling from the car to the door (inside the rubber protective boot or a weak window motor (1990 is pretty old for a motor of that type.

If the driver's window works, and the rest do not, I would start with testing the driver switch. The other windows are powered thru that master switch.

from autozone.com

REMOVAL & INSTALLATION
See Figures 5, 6, 7, 8, 9 and 10

1. Disconnect the negative, then the positive battery cables from the battery.
2. For 1990-94 vehicles, remove the battery and battery tray from the engine compartment.
3. For 1990-94 vehicles, detach the speedometer cable connector from the transaxle.
4. For 1995-98 2.0L turbo engines, remove the air hose.
5. For 1995-98 2.4L engines, remove the air cleaner and air intake hose.
6. If equipped with 1.8L engine, remove the bracket on the lower side if the intake manifold.
7. Detach the starter motor electrical connections.

Fig. Fig. 5: Exploded view of the starter motor and related components-1990-94 vehicles, others similar

Fig. Fig. 6: Unfasten the BAT terminal connector from the starter motor

Fig. Fig. 7: Unplug the starter motor electrical connector

1. Unfasten the starter motor mounting bolts, then remove the starter from the vehicle.

Fig. Fig. 8: Unfasten the starter mounting bolts

Fig. Fig. 9: Remove all of the starter mounting bolts ...

Fig. Fig. 10: ... then remove the starter motor from the vehicle
To install:

1. Clean both surfaces of starter motor flange and rear plate. Install the starter motor onto the engine and secure with the retainer bolts. Tighten the retainers to the specifications shown in the accompanying figure.
2. Attach the electrical harness connector(s) to the starter.
3. If removed, install the intake manifold stay and tighten the retainers to 18 ft. lbs. (25 Nm).
4. For 1995-98 2.4L engines, install the air cleaner and air intake hose.
5. For 1995-98 2.0L turbo engines, install the air hose.
6. For 1990-94 vehicles, attach the speedometer cable to the transaxle. Install the battery tray and battery.
7. Connect the positive, then the negative battery cables.

Operate the starter to assure proper operation.

Power Window Motor: Service and Repair
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Remove the window regulator from the door.
3. Place the window regulator on a suitable work surface and remove the screws that secure the power window motor to the window regulator.
4. Remove the power window motor from the window regulator.
INSTALLATION
1. Position the power window motor onto the window regulator.
2. Install and tighten the screws that secure the power window motor to the window regulator. Tighten the screws to 9 Nm (80 in. lbs.).
3. Install the window regulator onto the door.
4. Reconnect the battery negative cable.

It may be that it is not on the track properly or your power window motor is old and tierd and can take the window down but it doesn't have the juice in it any more to bring it back up. replace the motor and it will work. This problem happened to me in my '76 ford ltd and a new motor fixed it.

Shorted window motor

see if you have power switches . then try replaceing the driver side switch frist. if that duse not work then you will have to re place the windo motors.

Chevy cheeped out and has been using aluminum rivots to hold the motor in place. to remove the motor remove the rivets.

The first thing you need to do before buying any parts is to remove the door panel and find out exactly what is wrong, the motor is a gear reduction unit and even if the motor works it may still not drive the output gear. The door panel is held on by screws and hidden clips, pop off any panels or light fixtures on the door trim, under those you will find the hidden retainer screws, then gently pull door panel at edges to disengage feather style snaps.