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2014 gmc terrain reduced power warning


2014 gmc terrain reduced power warning Mechanic's Assistant: Are you fixing your Terrain yourself? What have you tried so far? So far cleaned up throttle body and also replaced it now....runs fine for a few minutes and th...

2014 gmc terrain reduced power warning Mechanic's Assistant: Are you fixing your Terrain yourself? What have you tried so far? So far cleaned up throttle body and also replaced it now....runs fine for a few minutes and then goes back into mode....bad idle, etc Mechanic's Assistant: How many miles are on the GMC? What size is the [engine](/topics-engine-chevy/)? 122000, 2.4L Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Replaced solenoid actuators as well both intake and [exhaust](/topics-exhaust-chevy/), works for a bit then seems to act up

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Responses

Automotive Expert
Hello, my name is \*\*\*\*\* \*\*\*\*\* I'm sorry your having problems with this vehicle so I'll try to help you with this issue.The website may prompt if you want a call, but that would be up to you. Have you checked for codes yet?

Not yet as the vehicle is difficult to drive at this pointEverything pointed to throttle body or sensor and changed that out and disconnected batteryIt runs for a bit and seems to idle run fine and then goes south again
Automotive Expert
Ok so first from here you need to run it enough to get the light to come back on, then try to get the codes pulled so you know where to go from here, and do not disconnect the battery to clear the codes on this truck as you can allter the programs in the computer, if you haven't done it already, on the newer cars this is not a wise way to try to clear the codes, you need a scan-tool for that.

Unfortunately disconnected it already, to take off the throttle body....the reduced power came back on now
Automotive Expert
So can you get to a parts shop to have them check the codes?

Don't knkmow....runs rough and haven't tried it yetWill look at doing that tomorrow
Automotive Expert
It can be too many things to just throw parts at it , it would be best to either get it checked or get a code reader , I've seen some at Harbor Freight for $40 0r $50 that can do a few test and check the codes on most cars.

Ok...will get that later this afternoon and handy to have int the future as well
Automotive Expert
And it works on most all cars so it can help you with yours and others as well.

Thanks, \*\*\*\*\* \*\*\*\*\* this hopefully tonight with codes....do I message you back then or someone else?
Automotive Expert
you can come back to this page and I'll get back to you.

codes are as follows

Customer attachment 12/27/2020 5:52:12 PM

Customer attachment 12/27/2020 5:52:28 PM

Customer attachment 12/27/2020 5:52:50 PM

Customer attachment 12/27/2020 5:53:29 PM
Automotive Expert
Sorry I have not seen this until now, so the 449 and 455 or any of those evap codes will not be what is causing this issue, the P0014 and 0016 can be related to the soleniods you have replaced did they come back after clearing the codes.? and the real problem at this point is either the high pressure fuel pump or the cam shaft lobe or the cause of the P0228d

they came back going to take it to the dealer tomorrow...will have ot.towed as.it runs really bad
Automotive Expert
that would be wise

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