Your in for a big thrill. Hope you got a GM manual to guide you through
it. The motors are typically riveted into the inner door and the 5 or 6
rivets have to be drilled out.

You can google around for instructions that i am sure is posted
somewhere on the web.

Good Luck

Harryface

Document ID# 492930
2001 Chevrolet Monte Carlo
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Window Regulator Replacement - Front Door Monte Carlo

Removal Procedure

Position the front door window with a 6.3 mm (1/4 in) space at the top.
Tape the window to the window frame.
Remove the front door trim panel. Refer to Trim Panel Replacement - Side
Front Door .
Remove the front door water deflector. Refer to Water Deflector
Replacement - Front Door .
Remove the inner energy absorber. Refer to Energy Absorber Pad Replacement -
Front Door .
Disconnect the front window from the front window regulator carrier plate.
Refer to Window Replacement - Front Door .
Disconnect the electrical connector from the front window regulator motor.
Loosen the bolts on the front window regulator motor.
Loosen the top bolts and remove the lower bolts on the front window
regulator rail.
Remove the front window regulator, lifting up and out from the key slots on
the front door inner panel and through the rear access hole.

Installation Procedure

Install the top window regulator bolts half way into the front window
regulator motor and the rail.
Position the front window regulator rail through the rear access hole first.
Position the front window regulator motor through the rear access hole.

Notice
Use the correct fastener in the correct location. Replacement fasteners must
be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or
sealant are identified in the service procedure. Do not use paints,
lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces
unless specified. These coatings affect fastener torque and joint clamping
force and may damage the fastener. Use the correct tightening sequence and
specifications when installing fasteners in order to avoid damage to parts
and systems.

Install the front window regulator bolts into the key slots. Tighten
Tighten the front window regulator motor and the rail bolts to 10 N·m  (89
lb in).
Remove the tape from the front window and position the front window to the
front window regulator carrier plate.
Connect the front window to the front window regulator carrier plate. Refer
to Window Replacement - Front Door .
Connect the electrical connector to the front window regulator motor.
Install the inner energy absorber. Refer to Energy Absorber Pad
Replacement - Front Door .
Install the front door water deflector. Refer to Water Deflector
Replacement - Front Door .
Install the front door trim panel. Refer to Trim Panel Replacement - Side
Front Door .