2003 Chevrolet Silverado 1500: check engine light

Filed Aug 7, 2018 · Acceleration, Driver assistance · 182,000 miles · CO

The tps throttle position sensor check engine code keeps going off while driving. When the tps code goes off the engine loses total power and you are unable to accelerate, which is a safety issue. We have replaced the throttle body but the issue is still remaining even after replacing different wires.

Filed Dec 15, 2016 · Engine · MI

The check engine light is on and the oil reader is all the way to the right and while driving on the highway the reduced speed warning comes on the engine reduces speed and cannot go over 30 in a 30 mile radius it has done this to me 4 times just this morning to work.

Filed Dec 5, 2016 · Engine · 130,000 miles · CA

Tl* the contact owns a 2003 chevrolet silverado 1500. While driving 70 MPH, the check engine and reduce engine power warning indicators illuminated. The contact stated that turning the vehicle off and back on resolved the issue. The vehicle was taken to the dealer to be diagnosed. The mechanic was unable to duplicate the failure or produce a fault code. The contact stated that the failure recurred three times. The manufacturer was not notified of the failure. The approximate failure mileage was 130,000.

Filed Jan 3, 2015 · Engine · 260,000 miles · OH

I received a reduced engine power message in the middle of the highway I was traveling at 70 MPH and when it came on I couldn't travel more than 35 MPH. I was afraid for my and my passengers life as we was on the verge of being hit. I had the check engine codes checked and received 7 different codes.

Filed Jul 3, 2014 · Acceleration, Transmission · 171,000 miles · NY

I was driving at normal speeds when all of a sudden I lost power to the tranny, I took the truck to a diagnostic center and found nothing wrong with the motor, my engine light went on as well but I cant accelerate more than 35 miles an hour it accelerates slowly gaining speed.

Filed Feb 10, 2014 · Acceleration, Engine · 150,230 miles · MN

I own a 2003 chevrolet silverado and as I am driving down the road the check engine light comes on as says "reduced engine power" and I am only able to travel between 20 to 30 MPH and also as I come to a stop light/sign the truck wants to sputter out and die. Everytime I take it to a mechanic shop they tell me its the throttle body and that it needs to be changed but I have already changed it 4 times in the last two years and is not the problem. The problem is constantly happening sometime 3 to 4 times a day.

Filed Sep 9, 2011 · Engine · 56,000 miles · NJ

Tl* the contact owns a 2003 chevrolet silverado 1500. The contact was driving approximately 45 MPH when the vehicle traveled over an uneven road surface and the reduced engine power mode warning message appeared. The check engine warning light was also illuminated and the vehicle stalled. The failure recurred intermittently. The vehicle was towed to the dealer where the technician stated that the fuel pedal actuator had to be replaced. The pedal was replaced but to no avail, and the failure persisted. The vehicle was taken back to the dealer where the technician was unable to diagnose the cause of the failure. The vehicle was not further repaired. The approximate failure mileage was 56,000.

Filed Aug 18, 2008 · Engine, Transmission · 120,835 miles · MS

The truck was purchased the 17th of june and two wks later the service engine light came on and its was real hard to get in 2nd gear. We took it to the chevy dealership and they checked it out for us. The problems are there is no cat converter,two seals and a sensor that needs to be replaced. Not to mention 2nd gear is messed .the service manager told us and gave us the list of things wrong and they are the 2nd gear ,the synchroni,3nd gear,synchroni and the ring in first. All this is to do with the transmission and the cat converter. A and z autos got mad that we took it to the chevy dealer. They keep giving us the run around and have not fixed the truck yet and they still have it at their shop. They will not return our calls .

Filed Aug 13, 2008 · Engine · 120,535 miles · MS

Tl*the contact owns a 2003 chevrolet silverado 1500. The contact stated that the second gear was not catching and the check engine warning light on the instrument panel. The failure was noticed while driving 50 MPH. The chevrolet dealer stated that the catalytic converter had been cut out, which was illegal. The failure mileage was 120,535 and current mileage was 120,640. Updated 09/10/08.

Filed May 8, 2007 · Engine, Transmission · 80,317 miles · MI

Just 100 miles after PCM was replaced , out of warranty, engine warning light came on. Since unable to get to dealership fast enough I did some research in my manual, which stated that if I shut down vehicle and light goes off then probably nothing major to worry about. Intermittently the light has came on, then gone off for the past 4000 miles. So with my oil change, had dealership run test on diagnostics, found bad catalytic converter. Cost of repair, $ 862. Well, I don't have that kind of money just floating around. Therefore, I couldn't get it done this time around. So I don't have that fixed. I was told gm gives up to 80,000 warranty on the PCM module and the catalytic converter. Strange how the light came on just 100 miles over the last work done. Why is this happening to me and my truck?

Filed Apr 5, 2005 · Brakes, Engine · 40,000 miles · NY

My complaint is the braking system on my 2003 chevrolet silverado 1500 extended cab, 4x4 truck. The brakes have always felt spongy. After complaining about the "low" brake pedal, my dealer advised that I needed to have my rear rotors repaired & the rear brake shoes replaced., so I had the work done. One week later, I again complained that now when I'm stopped at a traffic light, the brake pedal would go even lower. The braking system was checked out, the master cylinder was checked, & I was told everything was ok, there were no leaks. I was also told that this was the biggest complaint about this truck. I have had nothing but problems with this vehicle. In the first few months of owning the vehicle, the wiper blade was defective, thus scratching the windshield. I had to complain to get the windshield replaced & the wiper repaired. Also withing the first few months after purchasing, the 4x4 switch had to be replaced. The truck would not shift out of 4 wheel drive low. Another complaint that the dealer was notified within the first year of ownership was the wind noise due to a faulty door gasket on the driver's side. This was not replaced, only temporarily fixed, which only corrected the problem for a short while. Recently, the engine light came on, the o2 oxygen sensor had to be replaced. Within a month, the engine light came on again, this time it is a stuck open valve solonoid dealing with the emmission system of which I was given an estimate of 364.00 to reapair, this would not be covered under the extended warranty of the vehicle. This vehicle is only 2 years old, & I'm tired of having to take the time to get it to the dealer's for repairs.