2003 Chevrolet Silverado 1500 transmission problems

Filed Jan 14, 2016 · Electrical, Fuel system · 88,000 miles · TX

Sound coming from transmission when push on gas,no power on right side gear light doesn't work I service 4 wd it's tell me to service I start up it's picks which gear (stationary) door on right stop working lost all power.

Filed Sep 22, 2014 · Tires, Transmission · KS

The 2003 silverado 1500 short bed pu u-joints keep going out. Have replaced them atleast 6 times. Pu had 30,000 when purchased in 2006. There has to be something in the build of the pu that is causing this problem, don't matter what kind of tires I put on the pu it has a vibration all the time. The vibration could be whats causing the u-joints to go out. I have had 10 ply tires on it for off road use and now I'm running highway tires and still have the vibration, so I don't think it has to do with the tires it's more of a design in build problem rether than a mechanical problem I think.

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 May 16, 2014 · Airbags, Electrical · 250,000 miles · TX · crash · 1 injury

Vehicle was on cruise control prior to accident, I lost consciousness & do not remember anything about the crash early on. Was informed the vehicle rolled front to rear 1 1/2 to 2 1/2 times, prior to coming to rest on its top. The vehicle was a total loss due to this accident. I spent 3 days in icu and am now recuperating at home. No airbags deployed due to this accident . The vehicle was a total loss due to the accident.

Filed Sep 13, 2012 · Electrical, Engine · 168,000 miles · NE

I have a 2003 silverado that has been having rough idling issues. The truck doesn't idle rough everyday,but when it does the voltage fluxuates between 10-14 volts. Before this started happening it stayed at a steady 14 volts. Now the voltage is dropping and the RPM's are dropping to around 200-300 rpms then some times it will die in motion. I have replaced the alternator and had the battery tested they are good. There was low fuel pressure so I replaced the pump,still nothing is helping. I found a internet site (www.topix.com) there is 15 pages of people with the same problem. Nobody can find a definite problem. There is people spending thousands on their vehicle to fix it and the parts don't always help. I have no warning lights coming on,so I don't even know where to start anymore. I'm broke. I feel that gm needs to do something for all the people affected by this. *tr

Filed Nov 24, 2011 · Acceleration, Transmission · 119,000 miles · TN

My 16 year old son was driving the vehicle when it went into "reduced engine power" mode and would not accelerate beyond idle speed. It took several restarts before it cleared and would run correctly. About the time I made it home it went back into this mode again. This is a very dangerous problem as it occurs without warning at any speed.

Filed Jun 12, 2011 · Electrical, Transmission · 162,000 miles · 00

Reduce engine power message. 2003 chevy silverado. Driving down major 3 lane highway, message appears and trucks power goes to 15 MPH. Tried to get into slower lane and off highway and was almost in a serious accident due to no power. Truck will not accelerate any faster than this. Has happened 3 times since. Major safety feature with chevrolet. Other than dinger going off and immediately after that truck looses all power to accelerate. Can happen at any time. Codes are reading throttle positioning sensor. After doing some research on this it seems there are several other year and models doing same with people spending $1,000.00 or more and problem not resolved. Has happened 3 times since. After unhooking battery for approx. 10 min. It will reset itself and message will be gone until it happens again.

Filed Feb 12, 2011 · Transmission · 122,138 miles · 00

Purchased a used 2003 silverado, 120,000km. Encoder motor on transfer case (4x4) failed. Was towed and part replaced. Cost $900.00.encoder off my truck was corroded and seized. Very poorly built. This is apparently a part common to most 4x4 gm trucks. This must be a major problem for the industry and consumers.

Filed Mar 19, 2010 · Transmission · 63,500 miles · AL

My 2003 chevrolet c/k 1500 silverado is having a message on the instrument panel showing reduced engine power. Then, the engine immediately dropped power. The speed will dramatically slow to around 15 MPH. This happened 3 previous times. There have been several near misses as a result of the power reduction. The vehicle has been in the dealership on five separate occasions due to the engine power failure - at times the engine will not restart. The dealer stated that they replaced the throttle position sensor, throttle body, power train control module, throttle actuator, control module, also, the ignition switch was replaced and the engine was still losing power. The dealership and the customer service department was contacted and I have been unable to get any help with this problem.

Filed Nov 20, 2009 · Transmission · 75,000 miles · TN

2003 thru 2007 gm full size trucks and vans.the automatic transmission shift lock control (formerly known as the brake transmission interlock (bsti)) does not operate with the key in the accessories position. Called gm and was told to take it in and have it diagnosed.gm dealer checked it out and gave me a gm bulletin that says"the shift lock mechanism is only active when the ignition is in the run or on position." I know that the years prior to 2003 and years after 2007 that is not possible to shift the transmission out of park with out the brake pedal applied with the key turned to the accessories position. If it was not a problem from 2003 to 2007 why did they change it and why wasn't it that way before? I think that this is a safety issue that could create serious injuries or worse.