Picture it: you hop in, push start, and get a click. Maybe a few dash lights flicker. Maybe the screen comes on fine. Your brain says "starter," and the internet agrees. But on the newest Terrain, GM has told its technicians to look somewhere cheaper first.
What GM found
GM TechLink published "Check Grounds for No Start Condition" on July 23, 2025 (updated September 22, 2025) for some 2025-2026 Equinox and Terrain models. The symptom: a no-start, the starter may click, and several trouble codes may be stored in the engine computer.
The cause can be the 12V battery, its connections, or two engine ground points GM calls G111 and G112. A ground is just the return path for electricity. If it has paint under it, corrosion, or a loose nut, the starter can't pull the current it needs, so you get a click instead of a crank.
GM's steps for the dealer:
- Check the battery's state of charge. If it's good, check the negative battery cable extension.
- Do a voltage-drop test from the battery negative post to the transmission case. 100 mV or more means keep digging.
- At G111, make sure the stud is free of paint and the nut's contact surface is clean, then torque to spec.
- At G112, clean the bolt, terminal and transmission surface, then torque to spec.
- Clear codes and road test.
Click, no click, or slow crank?
| What happens | Most likely |
|---|---|
| One loud click, no crank, lights stay bright | Bad ground, loose cable, or starter |
| Rapid clicking, dash lights dim or flicker | Weak or dead battery, or a poor connection |
| Slow, labored cranking | Weak battery or high resistance in cables |
| Cranks fine but won't fire | Not a starting-system problem (fuel, sensors) |
| Nothing at all, no lights | Dead battery or main cable off |
| Won't unlock or start with the fob | Key fob battery or fob detection issue |
Easy things to try first
- Check the battery terminals. Are they tight? Any white or green crust? With the car off, wiggle each cable at the post. It shouldn't move.
- Test the battery. Most auto parts stores test for free. A healthy battery reads about 12.6 volts at rest.
- Jump it. If it starts right up on a jump, the battery or its connections are the focus, not the starter.
- Think about short trips. Lots of short drives and a ton of accessories can leave the battery undercharged.
- Write down the codes before anyone clears them. They help the dealer confirm the bulletin applies.
What it costs
| Repair | Terrain estimate | Source |
|---|---|---|
| Ground cleaning and torque (G111/G112) | Usually $0 under warranty | GM TechLink |
| Battery replacement, 2025-2026 | $424-$481 | RepairPal |
| Battery replacement, 2018-2024 | $363-$392 | RepairPal |
| Starter replacement, 2025 | $733-$1,042 | RepairPal |
| Starter replacement, 2024 | $538-$755 | RepairPal |
| Starter replacement, 2021-2023 | $745-$1,060 | RepairPal |
Those battery and starter prices assume a certified shop doing parts and labor. If your Terrain is new, let the dealer handle it under warranty, and make sure they've checked the grounds before replacing parts.
Other things a dealer may find
GM has also published a bulletin (PIT6110F) about a crank no-start with codes P062B and P060C on some of its larger trucks and SUVs, where low voltage at startup was one trigger. That one doesn't list the Terrain, but it shows how much GM's newer vehicles care about clean, solid voltage. A tired battery or bad ground can cause strange electrical codes, not just a click.
What to ask the dealer
- "Did you check the G111 and G112 grounds per GM TechLink?"
- "What did the voltage-drop test read?"
- "Did the battery pass a load test, and what was its state of charge?"
- "If you replace the starter, can I see the test that shows it failed?"
- "Is this covered under my bumper-to-bumper warranty?"
Is it worth fixing?
Of course. And the fix is probably much cheaper than you feared. On a 2025-2026 Terrain it should be covered anyway. On an older one, start with the battery and connections. That handles a big share of click-no-start problems before a starter ever comes into the picture.
More Terrain help lives on the GMC Terrain page. Engine hesitating or losing power? See our Terrain 1.5 turbo guide. Prices checked October 14, 2026.
