Reduced Engine Power but no codes - Chevy and GMC Duramax Diesel Forum
Maintenance Discuss scheduled maintenace, capacities, filter part numbers, etc.

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post #1 of 1 (permalink) Old 10-20-2019, 02:18 PM Thread Starter
Join Date: Oct 2019
Posts: 1
Reduced Engine Power but no codes

I have a 2013 3500 and the last trip I took it on I got a reduced engine power message on the dash but no DTCs. It is deleted and has a 5 position Moonshines tuner.

It still has decent power, prob 75%.

I plugged a Tech2 in and a cheap scanner along with HP tuners and no codes are present.

I just replaced the fuel filter and it was fine but no difference.

This truck is new to me with 74,000 miles, got it with about 72,000.

Truck was in a front end crash when I got it but it only needed a fender, hood, bumper and headlight to fix it.

Any ideas where to look next?
DuraMaxx76 is offline  
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