Following the cooling system hoses and pipes to locate the thermostat seems like a no-brainer.... Still leery about the thermostat code, but I can't even see where that is ---- someplace low on the engine where it would be a bear to try to get at. ...
Hello, I am experiencing the same issue and was wonder if you were yet to find a solution for the 2017 Acadia? I’m puzzled as well along with the GMC dealership who’s had my car for a week dropping it of 3 different times for that same problem. Please help me if you have found a solution to this ongoing Acadia problem. I can’t believe this is happening, it’s such a nice truck!I actually have a 2017 Acadia Denali and mine started doing this exact same thing about 6 months ago, but a couple days later, everything went back to normal. I read on this forum that the Coolant Temp Sensor was the main problem on the older models, so I went to the GMC dealer and purchased a new sensor. I figured I would wait until it problems happen again, and then change the sensor. However, the Acadia ran great all summer, until last week, the temp gauge dropped to 0, the air blew warm, the rad fan was racing, and the "Steering Assist is Reduced " warning came on the dash. I drove the car the next day and in the middle of my drive, everything started working again. Then last weekend, I finally had time to replace the Coolant Temp Sensor. It is not in the same place as everyone says for the older models. It took me 3 hours to find it, but I finally did and replaced it. It is actually on the top of the engine, left side under the air intake cover. I thought everything would be fine, but then today, all my problems came back. Now I'm puzzled, what is wrong with these that this problem keeps coming back? Do you think its the thermostat?
OK, I just replaced the thermostat and Im still having the same issues. Did anyone else go through this? How did you fix it? Im thinking its electrical?
I'm really surprised the techs aren't looking at a BCM communication problem. It's the BCM which controls the instrument panel (IP). The BCM is the final link for displaying messages and telling gauges what they are supposed to show you.Hello, I am experiencing the same issue and was wonder if you were yet to find a solution for the 2017 Acadia? I’m puzzled as well along with the GMC dealership who’s had my car for a week dropping it of 3 different times for that same problem. Please help me if you have found a solution to this ongoing Acadia problem. I can’t believe this is happening, it’s such a nice truck!
Ive had the same issue you were having and replacing the T-Stat did infact fix the problem. If it hasn’t returned yet I would have to say that its pretty safe to assume that was the culpfit. Definitely keep us posted to any changes but fingers crossed I think you should be ok.After replacing the thermostat, my issues were still there, but after driving the vehicle for a short time the next day, the gauge started working, A/C started working and check engine light finally went away. I have been driving the vehicle since and it has been running good for about a week now. Im not sure if the thermostat fixed the issue, but right now all is good. Ill let you know if the problems come back.
Ok thnx. I'll have to get one. I was also wondering if the body control module might be an issue. Thought about getting one and reprogramming it. It got to be one of those three things.Dont waste your time with the sensor. Bite the bullet and replace the thermostat. That will fix the problem. It doesn't seem right, but I replaced my sensor first and still had the problems. I then replaced the thermostat and I've been driving the vehicle for 2 months and have not had any issues. I wasn't to optimistic about replacing a mechanical item to fix these issues, but it worked.
What battery terminal did he replace?I’m late to the game on this but was recently having the same issue with my wife’s 2017 Acadia. The mobile mechanic replaced the battery terminal and it’s been all good ever since then. This was after I suggested replacing the thermostat so I saved quite a bit of money. Just wanted to share in case it could help someone else having the same issue (steering assist reduced, thermostat on C, engine reviving, and no AC).
The Engine coolant sensor is right next to the thermostat housing. It is on passenger side, on top center of engine. If you stand on the passenger side fender well, you can see both the thermostat housing elbow and the sensor. If you are having these same issues, you should try disconnecting the negative battery terminal for 5 minutes or so and see if this fixes your issue.Hello. I also have a 2017 SLT and I am struggling to find the Engine coolant sensor. Can someone post a picture or a decent diagram to help me out? Also, can someone share the part numbers for the thermostat and sensor. Thanks!