what does the message reduce power mean? on 2005 Chevrolet Colorado

i was driving down the road just got off work and was going about 50mph, and reduce power message came up and i could only got 25 to 30 mhp hour. i pulled over and turned off the truck. then turned it on and it was fine. what's wrong?

by in Wentzville, MO on August 11, 2011
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , August 11, 2011
You could have the beginnings of a misfire problem, so get your car inspected ASAP, before you do damage to your cat converter or something else. That warning comes on for a reason!