"REDUCED ENGINE POWER" w/ hypertech???

emitsTech · June 4, 2005

Hey everyone! I've been reading along and enjoying everyone's posts here for the last few weeks so I decided to join in on the fun! I'm hoping maybe someone will have some insight on this topic. I just got a new Hypertech power programmer III #30022 for my 2005 Sierra 5.3 2wd. After installing the hypertech program AND also when reprogramming it back to stock I get this message popping up for maybe 3 - 5 seconds, just before the programmer begins the "writing" process. The message reads: "REDUCED ENGINE POWER". This was kind of shocking since I was hoping to INCREASE engine power through the programmer After I programmed it the first time I took it for a spin and I can notice better acceleration and shifting, but the message still worries me. Anyone heard of anything like this or had the same thing happen to them when reprogramming the ecu? I am using 87 octane and the only mod I have so far is a Volant intake. Thanks in advance.

sonjaab · June 4, 2005

EM.............I also am running the Hypertech3.

Sounds like a software glitch in the programmer itself..............

I would try disconnecting the battery cable and see if it

clears the REP message.............. If not call the Hypertech

800 problem # in your instructions for assistance.............geo

sablowme · June 4, 2005

i also have the programer and recently had a service 4wd message come accross the dic and took it to my dealership and set the truck back to stock so they could fix the service 4wd message, afterwords i put the hypertech back into the truck and noticed the reduced power, service 4wd and a couple other messages, i called hypertech and told them the story they said that it is a defalt the programmer does pulling all the possible codes from the dic and displays them so they say its normal. i put mine on 93 octane and have shift improvement, along with the top speed limmiter bumped to 110mph honesly havent had any issues with it.

emitsTech · June 6, 2005

Thanks for the replies sonjaab and sablowme! I'm wondering if other programmers are causing the same message to display. Anyone use a diablo or superchips programmer?

emitsTech · June 6, 2005

Or has anyone had any other problems w/ hypertech 3 programmers?

HDChuck01 · June 6, 2005

Emit I have used that programmer and on my 03 Tahoe it would show all those messages but they would go away after the truck was programmed. I was worried the first time but it does go away after the programming is done. I don't think I'd worry about it unless it was displaying after the truck is programmed.

tryn2lrn · June 7, 2005

Mine displays the same message, it mentioned something about this in the manual so I wasn't surprised when I saw it. You read the manual right?

GMC6000 · June 7, 2005

I have the Predator, and mine did the same thing. It is just a programming cycle it goes through. Nothing to worry about.

emitsTech · June 7, 2005

Mine displays the same message, it mentioned something about this in the manual so I wasn't surprised when I saw it. You read the manual right?

<{POST_SNAPBACK}>

I read the manual at least a few times over and didn't see anything about this message, but I guess if everyone seems to agree that this is normal then I won't need to worry about it anymore. Just glad I'm not the only one and that no one's reported any horror stories of ecu failures or any other problems. Thanks for all the input!