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Discussion Starter · #1 ·
I have a 2016, I have been getting a engine power reduced alarm, but doesn't throw a code. But does cut the ac off, if I hit the reset button, turn truck off and restart it, it goes away, I Was told it had to do with the DEF fluid, I had it deleted and I'm still getting the alarm, any suggestions?
 

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Discussion Starter · #2 ·
I have a 2016, I have been getting a engine power reduced alarm, but doesn't throw a code. But does cut the ac off, if I hit the reset button, turn truck off and restart it, it goes away, I Was told it had to do with the DEF fluid, I had it deleted and I'm still getting the alarm, any suggestions?
9237
 

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My 16 showed a different message and had a different action with a def warning, yours is some generic thing of a message. I had def issues, no codes, but threw me into countdown to limp mode. Message was def quality poor xxx miles to 65 speed, then same to 55, then same to limp mode. Got cleared, came back with straight to limp mode, same msg. Yours looks like something different.
 

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Out of the blue I had the same “Engine Power is Reduced” warning at about 37,500 miles on my 2018 Colorado diesel. This was my first issue w the truck. Could still drive it on relatively flat ground but didn’t have enough power to climb the hill into The Rockies on I70 west of Denver. Medved Chevy fixed it for $562. Code was P2463 for excessive soot (255%) on the DPF. Dealer forced a DPF regeneration (about 2.5 hrs, I think) to clear the problem.
 

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Out of the blue I had the same “Engine Power is Reduced” warning at about 37,500 miles on my 2018 Colorado diesel. This was my first issue w the truck. Could still drive it on relatively flat ground but didn’t have enough power to climb the hill into The Rockies on I70 west of Denver. Medved Chevy fixed it for $562. Code was P2463 for excessive soot (255%) on the DPF. Dealer forced a DPF regeneration (about 2.5 hrs, I think) to clear the problem.
Sounds like something that should be under warranty since it's emissions related. You should pick up Gretio (app) with an OBDLINK MX+ (Bluetooth adapter) so you can do your own manual regen in the future should you need it. I have mine just in case.
 

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Sounds like something that should be under warranty since it's emissions related. You should pick up Gretio (app) with an OBDLINK MX+ (Bluetooth adapter) so you can do your own manual regen in the future should you need it. I have mine just in case.
Thanks for the tip about the OBD tool. Dealer says the DPF is covered but forced regen is not. DPF didn’t break although the overall system seems faulty and could leave you stranded and unable to climb mountain grades let alone pull a trailer. Never got the DIC message to “Keep Driving - Cleaning Exhaust Filter” - just went straight to “Engine Power Reduced.”
 
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