LMM tuning problems

BEKE

New member
Sep 26, 2024
3
0
1
Indiana
2009 lmm Chevy Silverado 2500hd Ltz

Recently had to replace my ecm because original one fried (capacitor came loose and shorted it). Truck has no dpf and have been trying to tune with HP Tuners because I am un able to get the tune off the original ecm.

What all needs to be adjusted to keep the truck from going into “engine power reduced” mode? We have tried disabling MILs for dpf and other sensors without luck. It will display “engine power reduced” on dash even without truck running and key turned forward after about 5 minutes.

Any help would be greatly appreciated
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,549
1,812
113
Mid Michigan
You probably wont get any help openly bc youre looking for a delete tune. If you cant get the tune out of the original ECM, you're screwed. You may have to look North for any help.

Also deleted your duplicate thread in the Tune Library.
 
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2004LB7

Well-known member
Dec 15, 2010
6,837
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Norcal
I don't have any experience with HP as I use the other option 😛. But there should be a table or field that is something along the lines of "dpf equipped" and needs to be set to no. That will make all the other options work