Question about 2003 Chevrolet TrailBlazer
I have this same problem but this happened when it wasn't cold outside. It happened to me while i was driving from work to home. Reduced Engine Power light came on then it slowed down to maybe 10 miles per hour. But the RMP gauge stayed reved up and wouldn't come down. As soon as i disconnected some wires in the front of the truck it ran greater then usual. It also happened to me on a road trip from Tenn. to Texas on a very hot summer day. They said I may need to replace the electrical harness unit? Not sure what's what or even what I'm supposed to agree to when it comes to getting something fixed. Any suggestions, are welcomed
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Posted on Jan 02, 2017
try changing the air filter ,i had a problem ,at ilde in drive my trailblazer would stall, changed the air filter now it's not stalling and got my power back ,there is a secondary air pump that i have to change ,
not sure were it is ? still not running perfect but it's running better .and my service light is on too.
i got it put on scope ,it's the pump .
not sure if this helps ,but i'm start to run in to problems too,i have a 2004 trailblazer.
i like to do fix things myself ,i hope i can.it's the cost if you know what i mean.
Posted on Dec 18, 2008
SOURCE: 2002 reduced engine power light
You have some kind of ECU problem. You will need to hook to the diagnostic port to find the problem. Your vehicle has gone into limp mode. This enables the vehicle to run, but at a diminished level until you can seek help for the problem. Do not continue to drive it this way as you may cause damage to the engine depending on the nature of the problem.
Posted on Feb 17, 2009
SOURCE: Reducded Engine Power
check the wires leading to you throttle body. i had the same problem and found a broken wire on the throttle body wiring harness. i repaired the break, had the computer reset and problem was fixed. hope this helps.
Posted on Jun 01, 2009
Mine did that after washing the engine bay throttle position sensor got wet it dried after a day or so and has been fine since
Posted on Feb 27, 2010
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