🔧 Grand Cherokee - Rear Window Regulator Replacement

The rear window regulator is the cable-and-track assembly that moves the glass up and down. When it fails, the window may fall into the door, move crooked, or stop working. You’ll remove the rear door trim panel, separate the glass from the regulator, swap the regulator, then reassemble and test.

Difficulty Level: Intermediate | Estimated Time: 1.5-3.0 hours (per rear door)

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⚠️ Safety & Precautions

• ⚠️ Disconnect the negative battery cable before unplugging door wiring to help prevent an airbag/BCM fault and accidental short circuits.
• ⚠️ Support the window glass before loosening the glass clamps—glass can drop suddenly.
• ⚠️ Wear cut-resistant gloves—inner door metal edges are sharp.
• ⚠️ Keep the ignition OFF while connectors are unplugged.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Cut-resistant work gloves
• Trim removal tool set (plastic)
• Small flat-blade screwdriver
• Phillips #2 screwdriver
• Torx T20 screwdriver
• Torx T30 screwdriver
• 7mm socket
• 8mm socket
• 10mm socket
• 1/4" drive ratchet
• 3" socket extension
• Needle-nose pliers
• Painter’s tape (1.5" wide)
• Pick tool
• Torque wrench (inch-pound and ft-lb capable)
• Shop light

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear window regulator (Left/Driver rear or Right/Passenger rear, as needed) - Qty: 1
• Rear window motor (only if not included with regulator or if your motor is bad) - Qty: 1
• Rear door trim panel clips - Qty: 6-12
• Butyl tape (vapor barrier adhesive) - Qty: 1

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📋 Before You Begin

• Park on level ground and lower the rear window about halfway if it still moves.
• Turn the ignition OFF, remove the key, and open the rear door you’re working on.
• Disconnect the battery: use a 10mm socket to remove the negative terminal and isolate it so it can’t spring back. Wait 2 minutes before unplugging door wiring.
• If the glass is stuck up and the regulator is broken, you’ll tape the glass in place once the panel is off.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the rear door switch/trim pieces

• Use a trim removal tool set (plastic) to carefully pry up the window switch bezel.
• Unplug the window switch connector by releasing the lock tab with a small flat-blade screwdriver.
• Set the bezel aside.

Step 2: Remove the rear door trim panel (door card)

• Remove visible screws in the pull handle/armrest area using a Phillips #2 screwdriver and/or 7mm socket (fastener types can vary by door/panel).
• Pop the trim panel clips loose: slide a trim removal tool set (plastic) behind the panel edge and pry outward around the perimeter.
• Lift the door panel straight up to unhook it from the window sill.
• Unplug any remaining connectors (courtesy light, speaker if equipped) using a pick tool to release stubborn lock tabs.

Step 3: Remove the vapor barrier

• Peel back the plastic vapor barrier carefully. Use a trim removal tool set (plastic) to separate it from the sticky butyl without tearing it.
• Plan to reseal it—this prevents water leaks into the cabin.

Step 4: Support and separate the window glass from the regulator

• If the glass is still connected, move it until you can see the glass clamp/attachment points through the door access holes.
• Use painter’s tape (1.5" wide) to tape the glass to the door frame (2–3 long strips from outside over the top of the door).
• Loosen/remove the glass-to-regulator fasteners using an 8mm socket or 10mm socket (varies by regulator design).
• Slide the glass fully UP by hand and add more painter’s tape so it can’t fall.

Step 5: Unplug the window motor and remove the regulator assembly

• Unplug the window motor connector (use a small flat-blade screwdriver or pick tool to release the lock).
• Remove the regulator mounting bolts using a 10mm socket, 1/4" drive ratchet, and 3" socket extension.
• If your replacement regulator does not include a motor, remove the motor from the old regulator using a Torx T30 screwdriver, then transfer it to the new regulator.
• Torque to 6 Nm (53 in-lbs) for the motor-to-regulator screws.
• Work the regulator out through the largest access opening. Use a shop light to watch the cable track so it doesn’t snag.

Step 6: Install the new regulator

• Slide the new regulator into the door cavity in the same orientation as the old one.
• Start all regulator bolts by hand first to avoid cross-threading.
• Tighten regulator mounting bolts with a 10mm socket and torque wrench: Torque to 10 Nm (89 in-lbs).
• Plug the motor connector back in until it clicks.

Step 7: Reattach the window glass

• Carefully lower the glass down into the regulator clamps (remove some painter’s tape as needed, but keep at least one strip supporting the glass until fasteners are tight).
• Install/tighten the glass-to-regulator fasteners using an 8mm socket or 10mm socket.
• Torque to 10 Nm (89 in-lbs).
• Remove all painter’s tape from the glass/door frame.

Step 8: Function test before reassembly

• Reconnect the negative battery cable using a 10mm socket. Torque to 5 Nm (44 in-lbs).
• Turn the ignition to RUN and test the rear window switch operation (up/down, smooth travel, no binding).
• Turn ignition OFF and disconnect the battery again with a 10mm socket before reassembly. This helps avoid warning lights if you unplug anything.

Step 9: Reinstall the vapor barrier and door trim panel

• Press the vapor barrier back into place. Add butyl tape anywhere it no longer sticks.
• Reconnect all connectors (switch, courtesy light, speaker) until they click.
• Hang the door panel on the upper window channel and press it down to seat it.
• Press all clips back in around the perimeter with your hands.
• Reinstall screws using a Phillips #2 screwdriver and/or 7mm socket.
• Reinstall the switch bezel: press it in until it snaps.

Step 10: Final test

• Reconnect the negative battery cable using a 10mm socket. Torque to 5 Nm (44 in-lbs).
• Key ON and run the window fully down and fully up a few times to confirm smooth operation and alignment.

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✅ After Repair

• Check that the window seals evenly against the weatherstrip and doesn’t tilt forward/back.
• Verify the door lock, speaker, and courtesy light work (they share the same door wiring area).
• If you hear clicking/popping, recheck that the door panel clips are fully seated.
• If the window moves slowly, inspect the run channels for debris and make sure the glass isn’t binding.

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💰 DIY vs Shop Cost

Shop Cost: $350-$650 (parts + labor) per rear door

DIY Cost: $90-$220 (parts only) per rear door

You Save: $260-$430 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-3.0 hours.

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🎯 Ready to get started?

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