2002 GMC Sierra power windows

Sound's like you have something broken on the regulator or something put in wrong. The regulator with motor is only 69 plus shipping so I would have replaced the whole thing not just the motor. Here's how you replace the motor.
Front Side Door Window Regulator Motor Replacement

Removal Procedure

1. Raise the window. If the window motor is inoperable, remove the window to gain access to the window motor retaining screws. Refer to Front Side Door Window Replacement (See: Front Door Window Glass Service and Repair).
2. Remove the power window module. Refer to Front Side Door Window Module Replacement (See: Front Side Door Window Module Replacement)
3. With the window regulator on the bench, remove fasteners one (1) and two (2) which will disconnect the drive housing and motor (4) from the rail (5).

Important: Do not allow cable gear/spool to come out of the housing. As the motor slides out of the gear/spool, hold the gear/spool into the housing with your fingers. The spool will unwind if it comes out of the housing.

4. Holding the motor and housing together, remove fastener three (3).
5. Slide the motor partially out of the gear/spool allowing finger access to the gear spool (6). Hold the gear/spool into the housing and remove the motor (7).

Installation Procedure

1. Install motor by aligning gear teeth and mounting points simultaneously, pushing the motor into the gear/spool and installing the motor to housing fastener first (3).

2. Slide the motor and housing assembly (4) onto the rail (5) and install the fastener number two (2).

Notice: Refer to Fastener Notice.

3. Rotate the motor and housing assembly to align the attachment point for attachment number one (1) and install the fastener.

Tighten the bolts to 5 Nm (44 lb in).

4. Install the power window module. Refer to Front Side Door Window Module Replacement (See: Front Side Door Window Module Replacement).
5. Install the window if removed. Refer to Front Side Door Window Replacement (See: Front Door Window Glass Service and Repair).

You need to replace the regulator anyway you can return that motor you bought?They sell the motor and regulator for 69 plus shipping at www. Rockauto. Com plus if you put this code in how did you hear about us box you will save 5 percent off your order. Here is the number 40220433242193.