How to Replace Both Rear Window Regulators on a 2017 GMC Sierra 1500
Step-by-step instructions with tools, parts, torque specs, and safety tips for 2014, 2015, 2016, 2017, 2018
How to Replace Both Rear Window Regulators on a 2017 GMC Sierra 1500
Step-by-step instructions with tools, parts, torque specs, and safety tips for 2014, 2015, 2016, 2017, 2018
🔧 Rear Window Regulator - Replacement
The rear window regulators control glass movement inside both rear doors. Replacing both sides is best done as a pair so the windows move evenly and you only remove the door trim once per door. Support the glass before unbolting anything.
Difficulty Level: Intermediate | Estimated Time: 4-6 hours for both doors
⚠️ Safety & Precautions
- Disconnect the negative battery cable before starting to prevent accidental shorts.
- Keep hands clear of the regulator tracks. They can pinch fingers hard.
- Support each glass panel any time the regulator is disconnected.
- Do not let the glass drop into the door shell.
- If equipped with side airbag wiring in the door, do not probe yellow connectors.
🔧 Required Tools
You'll need the following tools for this repair:
- 10mm socket
- 7mm socket
- Ratchet
- Short extension
- Trim panel removal tool (specialty)
- Torx T20 screwdriver
- Torx T30 screwdriver
- Painter's tape
- Pick tool
- Flat plastic pry tool
- Torque wrench
- Gloves
- Safety glasses
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Rear window regulator assembly - Qty: 2, replace in pairs
- Rear window regulator motor - Qty: 2 if not included with regulators
- Rear door panel clip set - Qty: 2 sets
- Water shield adhesive tape - Qty: 2
📋 Before You Begin
- Park on level ground and set the parking brake.
- Disconnect the negative battery cable with a 10mm socket.
- If one rear window still works, raise it fully before disconnecting power.
- Use painter's tape to secure each glass in the fully raised position before removing the regulator.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Remove the rear door trim panel
- Use a 7mm socket to remove the visible screws in the pull handle and lower trim area.
- Use a trim panel removal tool to release the clips around the panel edge.
- Lift the panel upward to unhook it from the window ledge.
- Disconnect the switch connector and any speaker connector.
Step 2: Remove the water shield
- Use a flat plastic pry tool to peel the water shield away carefully.
- Keep the adhesive clean so it can be reused or replaced.
- Do not tear the barrier.
Step 3: Secure the rear glass
- Raise the glass fully if needed and hold it with painter's tape across the door frame.
- Make sure the tape supports the glass before unbolting the regulator.
- Repeat this process for the other rear door before moving on if both windows are being replaced.
Step 4: Disconnect the glass from the regulator
- Use a 10mm socket or Torx T30 screwdriver if equipped to remove the glass clamp fasteners through the access openings.
- Slide the glass upward out of the regulator clamps if needed.
- Keep the glass supported and taped in place.
Step 5: Remove the regulator and motor assembly
- Use a 10mm socket to remove the regulator mounting bolts.
- Use a Torx T30 screwdriver to remove any motor or carrier screws, if equipped.
- Rotate and maneuver the assembly out through the large access opening in the door shell.
- Torque on installation: Tighten regulator mounting fasteners to 8 Nm (71 in-lbs).
Step 6: Install the new regulator
- Compare the new part to the old one before installing.
- Feed the regulator into the door opening and position it on the mounting points.
- Start all bolts by hand first, then tighten with a 10mm socket.
- If the motor is separate, transfer or install it now using a Torx T30 screwdriver.
- Torque on installation: Tighten motor fasteners to 8 Nm (71 in-lbs).
Step 7: Reattach the glass
- Lower the taped glass carefully into the regulator clamps.
- Use a 10mm socket to tighten the glass clamp bolts.
- Torque on installation: Tighten glass clamp fasteners to 8 Nm (71 in-lbs).
- Remove the tape only after the glass is fully secured.
Step 8: Reinstall the water shield and door panel
- Press the water shield back into place with the original adhesive or new tape.
- Reconnect the door switch and speaker connectors.
- Hang the trim panel on the window ledge, then press the clips in with your hands.
- Install the screws with a 7mm socket.
- Torque on installation: Door panel screws to 2.5 Nm (22 in-lbs).
Step 9: Repeat on the other rear door
- Repeat Steps 1 through 8 on the opposite rear door.
- Use the same tool sizes and torque specs on both sides.
- Keep bolts and clips separated by door.
Step 10: Restore power and test both windows
- Reconnect the negative battery cable with a 10mm socket.
- Cycle each rear window down and up several times.
- Listen for smooth movement and make sure the glass seals evenly.
- If auto-up or pinch protection acts odd, fully lower and fully raise each window once or twice to relearn its limits.
✅ After Repair
- Check both rear windows for smooth travel with no binding or clicking.
- Verify each glass lines up with the weatherstrip.
- Test both rear switches if equipped.
- Look for any air or water leaks after a short road test.
💰 DIY vs Shop Cost
Shop Cost: $700-$1,400 for both rear doors (parts + labor)
DIY Cost: $180-$500 for both rear doors (parts only)
You Save: $520-$900 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 4-6 hours for both doors.
🎯 Ready to get started?
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