2013 GMC Terrain trans went out at 104K. Pretty unbelievable - TerrainForum.net: GMC Terrain Forum
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post #1 of 13 (permalink) Old 08-19-2019, 08:51 PM Thread Starter
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2013 GMC Terrain trans went out at 104K. Pretty unbelievable

Every vehicle going back to my grandfather has been a GMC product. I own a 1999 Trans Am with 175K on it and still runs flawlessly.

Anyways, had this vehicle for 2 years. Dealer told me the transmission has a rare failure at 55K miles and got replaced. I wasn't afraid, so still went through with the sale. Shifting started tanking at 4500 RPMs when I tried to pass. So i played it safe and got it home and took it in, thinking it was a programming issue. Negative. Trans is ready to blow any minute my local dealer said. $3100 for a reman. 2 year warrenty. Local dealer said I'm just out of luck since it's past 100K warranty.

I own my own business, having 2 heavy duty work trucks. My wife is the local school attorney/business manager and we have spoke so highly of GMC and the entire school fleet is GMC products. Really considering this wasn't the right path. The loyalty I have shown didn't get me very far. 2 transmissions at 104,000 miles is super disappointing. Even more disappointed my local dealer/district manager won't help any.

Wondering is this unbelievably rare, or have others had transmission issues with the Terrain?


Edit: This is the 3.6L, 6 cylinder model, SLT-2 Trim, AWD.

Last edited by jake081; 08-19-2019 at 09:50 PM.
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post #2 of 13 (permalink) Old 08-19-2019, 09:13 PM
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You did not state which engine/transmission you have but I am guessing you have the 2.4 4cyl. model. The 2.4 engine is a disaster for GM. The transmission is not bullet proof like most of the other GM transmissions, but I can not recall too many failures. I dumped my 2014 4 cyl. for a V6 as I hated the engine having to rev to mid 4000 RPM's when climbing hills with only a couple of people. The Equinox of that vintage is a heavy 3000# vehicle. My V6 never revs over 3200 RPM when climbing a long steep grade. Night and day difference in a V6 as it also comes with a better transmission. The $1500 upgrade in 2016 was a no brainer after previous experince with my 2014. Now if the dealer put a rebuilt transmission in the vehicle under warranty as manufacturers do require Reman when available, who knows how well the replacement transmission was rebuilt. Was it thorough or questionable parts left alone. Been down that road many times with farm equipment parts. We are rebuilding a tractor transmission with used parts as the customer wants to save money. I am not warranting the work as some of the gears are questionable. Others will put in their two cents here and some will suggest that you look for a used transmission for a non-dealer to install. There will be more good transmissions out there than engines. If you tell me you have a V6, then something is not right.

2016 Equinox LT AWD - 3.6L LFX V-6 - Patriot Blue / DOB: 1/26/2016<br />2017 Colorado LT 4X4 - 3.6L LGZ V-6 - Silver Ice Metallic / DOB: 01/05/2017
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post #3 of 13 (permalink) Old 08-19-2019, 09:52 PM Thread Starter
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I appreciate your thought out response. It is in fact the 6 cylinder model. That is what has me puzzled. The dealer didn't state if it was a total swap for new, or a rebuilt one, or possibly only a fix on the failed parts. In retrospect, I should have asked more questions. Life lessons.
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post #4 of 13 (permalink) Old 08-19-2019, 10:33 PM
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As you can tell, I never would have guessed the V6 model as it came with a heavier built transmission. I can not recall a transmission failure here for that unit. Any you were revving the engine at 4500 RPM? I know my engine has never needed anything over 4000, unlike my former 2.4. Somebody else here has a better idea of the ratio of V6 to 4 cylinder sales which is a small percentage of GM sales. I am not so sure that the Traverse/Acadia did not have the same combo. I did see over on the Traverse forum that someone thought his transmission was going bad but ended up being a dirty MAF sensor. Sounds like you are not that lucky. You could take it to another dealer for a second opinion.

2016 Equinox LT AWD - 3.6L LFX V-6 - Patriot Blue / DOB: 1/26/2016<br />2017 Colorado LT 4X4 - 3.6L LGZ V-6 - Silver Ice Metallic / DOB: 01/05/2017
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post #5 of 13 (permalink) Old 08-19-2019, 10:33 PM
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As you can tell, I never would have guessed the V6 model as it came with a heavier built transmission. I can not recall a transmission failure here for that unit. And you were revving the engine at 4500 RPM? I know my engine has never needed anything over 4000, unlike my former 2.4. Somebody else here has a better idea of the ratio of V6 to 4 cylinder sales which is a small percentage of GM sales. I am not so sure that the Traverse/Acadia did not have the same combo. I did see over on the Traverse forum that someone thought his transmission was going bad but ended up being a dirty MAF sensor. Sounds like you are not that lucky. You could take it to another dealer for a second opinion.
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2016 Equinox LT AWD - 3.6L LFX V-6 - Patriot Blue / DOB: 1/26/2016<br />2017 Colorado LT 4X4 - 3.6L LGZ V-6 - Silver Ice Metallic / DOB: 01/05/2017
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post #6 of 13 (permalink) Old 08-20-2019, 03:55 PM
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did they say WHAT the failure was?


3-5-R waveplate?
TECHM solenoids?


or they just said- a very rare expensive failure.
I have the 3.6 and similar trans in my 2010 Traverse. 152,xxx.
ALso same on my 2013 Equinox. Though its only at 87,000

2013 Equinox LT1 3.6L V6 FWD 88,000
2010 Traverse LT1 3.6L V6 FWD 153,000
2003 Trailblazer LS 4.2L I6 RWD 181,000
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post #7 of 13 (permalink) Old 08-20-2019, 04:09 PM
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OP, you have AWD, so the dealer is 100% sure it's a transmission issue and not the transfer case?
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post #8 of 13 (permalink) Old 08-22-2019, 12:42 PM
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2nd opinion is always a good idea on an expense of this magnitude.

My 13 Nox with same drivetrain is starting to exhibit some issues at 262,000 KM (note kilos, not miles) but I have an extended warranty to cover it so not overly concerned. Two trannies by 104K seems highly unusual and worth further analysis.

2013 Equinox 2LT ISC AWD 3.6 V6 Granite Black Metallic
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post #9 of 13 (permalink) Old 08-22-2019, 01:03 PM
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Quote:
Originally Posted by jake081 View Post
Anyways, had this vehicle for 2 years. Dealer told me the transmission has a rare failure at 55K miles and got replaced. I wasn't afraid, so still went through with the sale. Shifting started tanking at 4500 RPMs when I tried to pass. So i played it safe and got it home and took it in, thinking it was a programming issue. Negative. Trans is ready to blow any minute my local dealer said. $3100 for a reman. 2 year warrenty. Local dealer said I'm just out of luck since it's past 100K warranty.

Wondering is this unbelievably rare, or have others had transmission issues with the Terrain?

Edit: This is the 3.6L, 6 cylinder model, SLT-2 Trim, AWD.
I've been on this forum since I bought my V6 Nox January 2011. There may have been a few transmission complaints, but I'd say you could call it "unbelievably rare".

But you bought this vehicle used - which opens Pandora's box to other possibilities. That's the thing with buying used vehicles: you just never know who's had their hands on it before you.

I would get the 2nd opinion, but I'd ask around at the independent guys ... see if you can find someone who might give you some hope that it might not be as bad as it appears.

2011 Equinox 1LT (new Jan 2011): Summit White / 3.0 L V6 / FWD / Pioneer Stereo / 18" Wheels / 131.6k miles [14-JUN-2019]

2002 Impala 1LT (new Jun 2002): Summit White / 3.4 L V6 / FWD / Cassette-CD Combo /222.5k miles [13-JUN-2019]
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post #10 of 13 (permalink) Old 08-22-2019, 01:18 PM
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My 2015 V6 is nearly at 50k miles, and I have noticed the transmission shifting hard sometimes, especially when I romp on the gas pedal instead of switching to the lowest gear for passing, it will downshift gear by gear until it hits the gear it wants, and not very smoothly. Also happens when I let off the gas and am coasting to a stop the shifts are very noticeable and hard.

I drained and filled the trans fluid a few times a few months ago as outlined here on the forum, hasn't gotten any better. I'm worried it's going to fail one day...at least I have another year/50k miles of powertrain warranty.

2015 Equinox LT FWD 3.6L V6
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