GMC Acadia Engine Power Reduced - Need Help Diagnosing!

Has anyone tried resetting the engine control unit (ECU)? Sometimes that can solve the issue temporarily, but it might mean a deeper problem is lurking.

I’ve done that as well! It worked for a few days, but it eventually came back. Just a band-aid fix in my case.

I read that some GMC Acadia models have known issues with faulty fuel injectors. Maybe it’s worth checking with a mechanic if you suspect fuel delivery problems.

Yikes! I’ll be keeping an eye on that. It’s frustrating when these cars have so many recurring problems.

One thing I did when mine did this was to change my oil. It sounds silly, but it made a difference! Regular maintenance can really prevent these issues.

6 Likes

That’s actually not silly! It’s important. It’s surprising how neglecting maintenance can lead to bigger problems down the road.