Engine power reduced 2007 suburban - 2007 Chevrolet Tahoe

SOURCE: 2005 suburban stabilatrac disabled

The Reduce Engine Power problem on my 03 Suburban went away when I had to replace the fuel mixing sensor. I damaged the sensor by topping off with E85 (ethanol) by mistake late at night. The vehicle just would not turn on in the morning. The vehicle had to be towed to the dealer. I was in Carlsbad NM about 800 miles from home. I had no choice but to pay $1,100 to get it fixed. At the same time the Reduce Engine Power problem went away. And thanks to God it has not come back for nine 9 months now.

SOURCE: reduce engine power 2007 chevy uplander

Sopunds like the computer has gone into a limp mode. You need to take it in for a professional diagnosis.

SOURCE: Reduced engine power came on i'n my 00 chevy

Ok I would start by checking your shifter to make sure it adjusted right and you can do this by looking at your shift indicator if that is ok then might have a bad manual shift valve thats in the transmission, if that valve goes bad it would tell the pcm that your transmission is being shifted into another gear while your driving causing the Power control module (PCM) to out you vehicle into reduced engine mode