2003 Chevrolet Suburban 1500: sudden loss of power

Filed Dec 26, 2014 · Engine · 114,000 miles · MN

Driving on the highway and I lost all power. It said (reduced engine power) on the dash. This has happened several times and I haven't found a mechanic who can fix it. I've looked all over the internet and there are many other people with the same problem. This is very dangerous and almost caused an accident. It comes out of nowhere and for this to happen to someone for the first time, it's going to cause some deadly crashes.

Filed Jan 31, 2013 · Electrical, Engine · 195,000 miles · NJ

Just finished driving vehicle for 1 hour at highway speeds without incident. Parked car for 5 minutes, upon trying to restart, the car displayed "reduced engine power" on the driver information console. Approximately 8 restarts and the message did not display. Drove car 5 minutes and parked it for 1 hour, upon restart displayed same message, car was virtually undriveable. 3 restarts later message no longer displayed. This message has now intermittently occurred ever since seemingly without any pattern. The message is related to a failure in the "drive by wire" system that allows for the elimination of a physical cable from the gas pedal. It causes the car to be completely undriveable until seemingly randomly fixing itself.

Filed Mar 17, 2012 · Electrical, Engine · OH · fire

"reduced engine power" light comes on and truck slows to less than 10 MPH and the power steering stop working. This has happened six times in the last year. 1st incident I took it to the dealer and they said nothing was wrong with it. Diagnostics performed and nothing came back wrong. I think the wiring to the throttle is possibly to blame. If I hit a bump in the road or cross railroad tracks, the reduced engine power can come on. I have a hunch after researching online & finding that several other people have the same problem, that leads me to believe that chevy knows about it & is doing nothing about it. "typical"!! I am very displeased, especially because I love my suburban. I suggest an investigation & recall of this problem.I ask that chevy takes responsibility for poor quality & repairs the problem pronto! Oh, and the power seating fuse caught fire and exploded the little fuse in the fuse box, now the seats won't work & neither does the passenger side windows. The wiring done on this truck is cheap! The parts are cheap! Not a happy customer!

Filed Aug 15, 2011 · Engine · 151,525 miles · AL

Suburban loses power and engine dies while driving. No warnings before shut off and no codes after shut off. After waiting 5-10 minutes, vehicle cranks and runs again. Randomly, it may shut off again in 1-2 miles or run for days without the problem. This is very disturbing when one is on the interstate running 70 MPH and your engine shuts off. You lose power steering and brakes as you try to make it to the emergency lane. Someone is going to get killed!!! The battery died after several attempts to restart yesterday. The dealer cannot identify why the engine shuts off, so no repairs have been made.

Filed Jan 16, 2011 · Transmission · 106,000 miles · TX

(reduced engine power) will not accelerate faster than 30 MPH. Shut off engine for 15 seconds and start up again and it happens 10 to 15 times a day, even at 65 MPH on the highway. (no power) and no help from gm dealer ship.