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reduced engine power sensor ??? There is no reduced engine power sensor, Now a message on the DIC -driver information center, reduced engine power is a different story . Reduced Engine Power
Refer to Powertrain Control Module Description in Engine Controls
Reduced Engine Power Mode
When the PCM detects a condition with the TAC system, the PCM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The PCM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The PCM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The PCM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The PCM will perform the following actions:
• Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned off.
• Ignore the accelerator pedal input.
• Engine shutdown mode--The PCM will disable fuel and de-energize the throttle actuator.
You need to hook up a scan tool an check for DTC'S - diagnostic trouble codes .
I have no idea myself but found the car memories web site that states the engine specifications and I hope it is correct and matches your engine ?
most likely it would be rounded up to a 5.8 litre capacity
Jerry, Drive to a good shop. So many things can cause reduced power light unfortunately. The first step would be to get the truck hooked up to a scanner/computer and have the computer scanned for trouble codes. One thing that you could try is to drain the water from the water separator that is mounted on the frame under drivers front door. If the PCM picks up on water, power is reduced until water is removed/drained. It could be an exhaust sensor that is reading faulty. Unfortunately from here its impossible to tell you exactly what the fault is because there are just so many engine sensor inputs that could cause your problem. Check the attached links, forums,instruction and guides, Good luck
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www.underhoodservice.com/tech-tip-reduced-engine-power-message-dis... Dec 10, 2012 - Tech Tip: Reduced Engine Power Message Displayed on GM Vehicles ... Model year 2008-'10 vehicles must have the engine control module (ECM) reprogrammed ... Do not drop the electronic throttle control components.
stock engine?
i did not decode that, at all.
has power? (what 12vdc power or engine power)
turn key it wont start but does it crank.??????? fast..
and lose power, what power is lost 12vdc power or engine runs but lost power?
the power is back what power? name something, specific,
like 12vdc power, starter power, engine power.
the starter wont work, i take that its silent?
or
starter spins but engine dont?
or starter clicks
or starter, is weak
or ???? try to be clear,
no engine stated.
no transmission.
if stick shift the clutch switch must work or the starter will be dead.
does that help
ever hot wire a starter, see this. http://www.fixkick.com/nocrank.html
if engine will not crank, say that.
then say sounds. it makes if any.
The engine provides power steering through the power steering pump that is runnung when the engine is going and the power brakes are powered by the vacuum generated when the engine is running. To lose both togeather then the engine probably stopped.
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