Question about 2003 Chevrolet TrailBlazer
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Posted on Jan 02, 2017
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
A sensor failed. A code will be stored. You need to get the code in order to proceed. With over 200 possible codes its anyones guess what happened.
Posted on May 18, 2010
SOURCE: The reduce engine power light
A lot of times it's a filthy or sticking throttle body. With this situation, the computer will throw the reduced engine power light as kind of a safe mode. A lot of times, you won't be able to go past a certain speed too. With the battery disconnected, clean your throttle body with throttle body cleaner. Must be shiny. When finished, drive around for 20 minutes or so, so your computer can re-learn the correct settings of a newly cleaned throttlebody. When driving for 20 min, make sure all accessories are off.
Posted on Jan 27, 2011
Whenever this warning light comes on it is indicating that a problem has been sensed by the electronic sensors of the engine and or the transmission and the on board computer (called the PCM) has limited the engine power to avoid further damage to the system components like the engine and transmission. What needs to be done (and is stated in the owners manual) is take the car in to a GM dealer or a suitable trusted service center and have the electronics tested for the fault codes that are stored in the system whenever the light is turned on that would indicate what part of the electronic controls (this can be a sensor, wiring or the computer, it can also be a mechanical fault) has malfunctioned. Due to complex nature of the system guessing will waste your time and money, there are at least 100 different faults that will trigger this warning. Once the technican has the fault codes and has driven the car they can begin diagnostics of the problem(s) indicated by the stored fault codes.
Posted on Aug 21, 2011
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