IS the check engine light on? The computer has the capability of putting the car in a "limp home mode" if somethign is wrong. If no check engine light, your fuel filter may be clogged and blocking fuel or the fuel pump is getting weak.
Get the computer scanned to see what the problem is.
Reduced engine power, on your 2005 Pontiac Montana, can because by several things. The most common cause of reduced power is a lack of fuel.
Zero, there is not a 2008 Camaro.
Depends on what engine and what year Camaro you're referring to...
"http://wiki.answers.com/Q/What_causes_your_2006_pontiac_grand_prix_driver_info_center_to_display_reduced_engine_power"
more power than a stock engine
The reduced engine power light means that there is a problem with the battery or power system. It almost always means a battery connection issue.
in the range of 140hp
Depends on the year, engine, etc...
gmc serra engine power reduce,can't drive no power
The stock horsepower for the 1980 Z28 Camaro, equipped with the 350 cubic inch (5.7L) V8 engine, is rated at 190 horsepower. This was a decrease from earlier models due to stricter emission regulations and changes in engine design. The Z28 package included performance features, but overall power output was reduced during this era.
It is reducing engine power because a sensor dictated a serious problem and to keep the engine from damaging itself it'll go to engine power reduced stage and it vibrates because its at a rough idle