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r/gmcterrain

▲ 3 r/gmcterrain

May have accidentally messed up terrain lettering on hatch! Help!

Hey everyone! I recently purchased a ‘21 Terrain SLE. Yesterday I removed the dealership sticker that was above the terrain lettering on the back of the vehicle. After I got the sticker off I used adhesive remover to get the leftover residue off. Didn’t even think about it and the adhesive remover dripped down on the lettering and now at least the T is very loose and seems like it’ll fall off at any moment. Where’s the best place to get new lettering? I’m thinking about getting all black letters too!

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u/nickterry110 — 3 days ago
▲ 2 r/gmcterrain+1 crossposts

Can I use this oil type

Hey I accidentally bought 5w-40 oil for my 2015 GMC terrain It was supposed to take 5w-30 but I only got 5w-40 can the ecotec handle it

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u/swarm-ofbluefords — 3 days ago
▲ 2 r/gmcterrain

GMC Terrain 2015

Has anyone dealt with a weird vibration when turning the steering wheel especially on sharp or deep turns?
When I turn left or right hard while driving the car starts vibrating. The best way I can describe it is it feels like when you hit the rumble strips on the side of the highway, or almost like the front tires are rubbing on something. As soon as I start straightening the wheel, the vibration goes away. I’ve heard people say it’s normal, but I’m not sure if that’s true.
Also, I recently got a P0420 code that came on about 2 days ago. I’ve never had this issue before the car has always been well maintained at the dealer including a new transmission and timing components.
I cleaned the throttle body and MAF sensor, and while I was there I noticed the PCV tube looked like it had been glued before. The plastic nipple is broken, and part of it is stuck inside the rubber hose.
Since that code came on, the car has been driving differently. For example I can be cruising at 60 mph but when I start slowing down the RPMs go up before dropping back down. It almost feels like engine braking on a motorcycle with slight jerk. Could that broken PCV/vacuum line be causing the P0420 code and is the vibration on turns actually normal or should I be looking into something like axles or suspension?

u/SoftwareStunning9549 — 3 days ago
▲ 1 r/gmcterrain

Does car stay running

I have a 2018 GMC terrain. I want to know if the air conditioner stays running if I leave the car running as I exit the car & lock. I am wondering if I could keep my dog in the car for a few minutes like 30 minutes with it, running with the air conditioner going.

Is this possible or will it shut off?

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u/CrazyDude2025 — 6 days ago
▲ 1 r/gmcterrain

2016 Terrain

My oil status says I'm at 4% but I'm about 500km from 5000. It's never done this before and I have no idea why its doing it now.

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u/True_Blue_88 — 9 days ago
▲ 2 r/gmcterrain+1 crossposts

Anyone with a problem with their new 2026 GMC TERRAIN RADIOS?

Just bought a new GMC Terrain. The radio is not working! No matter what I try, it never sounds tuned in: FM, AM, talk shows, instrumentals, vocals! Took it back to the dealer- alerted our salesman about it, service check said it was ok. It wasn’t! Asked to see the service manager- waited for an hour after making the appointment- was told he was busy with another customer. Can someone tell me what my recourse is?

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u/Strange-Comb6384 — 10 days ago