2010-2017 Equinox & Terrain Power Liftgate Latch: Fixing a Stuck or Inoperative Trunk

Compatibility Warning: Power Liftgate (RPO TB5) Required

Symptoms of a Failing Power Liftgate Latch

A failing liftgate latch motor can cause a range of frustrating issues. Here are the most common signs that your latch assembly may be the problem:

• Liftgate Will Not Open Electronically: You press the button on your key fob, dashboard, or the liftgate handle, and you hear a click or nothing at all, but the gate remains locked.
• Liftgate Will Not Close or Latch: The power struts may lower the gate, but it fails to pull itself shut in the final stage. It may bounce back up slightly or remain loose.
• Grinding or Clicking Noises: Loud or unusual mechanical noises from the bottom of the liftgate during the opening or closing cycle often point to stripped gears or a struggling motor inside the latch assembly.
• 'Liftgate Ajar' Warning Light: The dashboard displays a warning that the trunk is open, even when it appears to be closed. This indicates the sensor within the latch is not registering that the door is securely locked.
• Liftgate Opens and Immediately Closes: In some cases, a faulty latch can contribute to the system's confusion, causing the liftgate to reverse direction shortly after opening. However, this issue is more commonly related to weak lift struts.

How to Diagnose the Problem: Don't Replace the Motor Yet!

Before spending money on a new latch motor, perform these simple diagnostic steps. The problem is often a much cheaper and simpler fix.

1. Check the Fuses: The first and easiest step is to check the fuses related to the power liftgate. In the 2010-2017 Equinox and Terrain, these are located in the fuse box under the hood. Check fuses #23 (30A, Liftgate Module), #32 (15A, Rear Hatch), and #49 (15A, Liftgate Module Logic).
2. Test the Release Switch: The rubberized switch pad on the liftgate itself is a very common failure point. Water intrusion and wear can cause it to stop working. If the gate opens with the key fob or interior button but not with the handle switch, the switch is likely the culprit and is a separate, inexpensive part to replace.
🎬 See this walkthrough on replacing the liftgate release switch.
3. Check for Obstructions and Alignment: Make sure nothing is blocking the latch mechanism or the striker. Misalignment of the liftgate can also prevent the latch from engaging properly.
4. Listen Carefully: When you command the liftgate to open, what do you hear? If you hear the latch click or attempt to release, but it doesn't, the latch motor itself is the primary suspect. If you hear nothing at all, it points more toward a fuse, switch, or wiring issue.

Known Issues, TSBs, and Recalls

Class Action Lawsuit: Weak Liftgate Struts

While this article focuses on the latch motor, it's crucial to be aware of a widespread issue with the gas-pressurized struts that lift the gate on 2010-2012 models. A class-action lawsuit was filed alleging that these struts could fail prematurely, causing the heavy liftgate to fall suddenly and unexpectedly. A 2015 recall attempted to address this by reprogramming the control module software, but the lawsuit claimed this was insufficient without also replacing the defective struts. If your liftgate sags, droops after opening, or struggles to lift, the problem is likely your side struts, not the latch motor at the bottom.

No Recalls for the Latch Motor

As of early 2026, there have been no specific safety recalls issued by GM or the NHTSA for the power liftgate latch motor assembly on the 2010-2017 Chevrolet Equinox or GMC Terrain.

Programming and Calibration Requirements

No Dealer Programming Required

Liftgate Height Relearn Procedure is a MUST

While the motor itself doesn't need programming, the liftgate system's opening height does need to be set or 'normalized' after the battery has been disconnected or components have been replaced. This simple procedure teaches the control module the desired opening height.

1. Find the liftgate control knob on the driver's door or overhead console. Turn it to the '3/4' setting.
2. Press the liftgate open button.
3. Manually push or pull the liftgate to the exact height you want it to open to.
4. Press and hold the round button located on the edge of the liftgate itself (the button used to close it).
5. Keep holding the button for about three to five seconds until you hear a beep and/or the vehicle's turn signals flash.
6. The new height is now set. You can return the control knob to 'MAX' if you wish for it to open to this newly programmed maximum height.

Buying a Used Trunk Lid Pull Down Motor

A used OEM latch assembly is an excellent, cost-effective alternative to an expensive new part. Since this part does not require programming, a recycled unit from a compatible vehicle is a great option. Here’s what to look for:

• Verify the Part Number: Match the part number from your old unit to the used one if possible. However, many numbers have been superseded. Focus on getting a part from the same vehicle generation (2010-2017 Equinox/Terrain with power liftgate).
• Inspect for Damage: Check the plastic housing for any cracks or signs of heavy impact. Ensure the electrical connector pins are straight and free of corrosion.
• Check the Mechanicals: Manually move the latch hook if possible. It should move smoothly, not feel seized or gritty.
• Why Used OEM is a Good Choice: An original GM part, even used, often has better build quality and a more precise fit than a cheap aftermarket alternative. For electronic and mechanical parts like this, OEM reliability is key.

Cost Comparison: Equinox & Terrain Liftgate Latch

The cost to fix a failing liftgate latch can vary widely. A DIY repair with a used part is often the most economical solution.

Frequently Asked Questions (FAQ)