2003 Chevrolet Silverado 1500 engine problems

Filed May 18, 2021 · Engine, Fuel system · CA

My engine has been giving me lean condition codes p0171, p0174 and truck is lacking performance really bad and coolant problems too please message me back

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 Dec 7, 2015 · Electrical, Engine · 128,000 miles · MO

At random times while driving or turning, no matter the weather our truck randomly dies. Shifting into neutral she always starts back up right away.however due to not knowing when it will happen, it does on city streets at 25mph and had on the highway at 75mph. We are unsure still at the moment the cause or solution. We have had 4 episodes of this dangerous problem starting this year only, 2015 .

Filed Apr 10, 2015 · Electrical, Engine · 120,000 miles · GA

Tl* the contact owns a 2003 chevrolet silverado 1500. The contact stated while driving approximately 55 MPH, the vehicle stalled without warning. After restarting, the vehicle resumed normal operation. The failure recurred numerous times at various speeds. The vehicle was taken to the dealer who stated that the throttle body was faulty. The contact was able to repair the vehicle himself. Recently, the vehicle exhibited hesitation on different occasions when the accelerator pedal was being applied. The vehicle was not repaired. In addition, the air conditioner circulated warm air whenever activated. The blower motor connector was not replaced; however, the motor resistor was replaced. The manufacturer was notified of the issue. The approximate failure mileage was 120,000.

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 Jan 1, 2015 · Engine, Fuel system · 45,000 miles · OK

On multiple occasions the vehicle has lost power at highway speed and the engine dies. After a few attempts the engine restarts and operates normally for an unpredictable interval. This has happened at least 10 times. The authorized dealer and other mechanic shops have not been able to diagnose the reason for the power failure as they have not been able to cause it to duplicate failure when they have it. This sudden unexpected condition is very dangerous when it occurs and renders the vehicle unusable for anything other than short usage.

Filed Oct 29, 2014 · Engine · 142,116 miles · TN

While driving down busy road, for no reason engine power was suddenly reduced which could have resulted in a serious accident. This has happened numerous times. Called gm. No recalls. This appears to be an inherent problem, not wear and tear. This needs to be addressed asap.

Filed Sep 1, 2014 · Electrical, Engine · 180,000 miles · WA

Reduced engine power. This has been occurring off and on for about 9 months, have taken it to dealer multiple times and replaced everything that was said would fix the problem. The problem still occurs even after replacing: accelerator and receiver on throttle body as well as checking wiring harness for issues. Essentially, the vehicle will lose the function of the accelerator without warning at any given time during the use of the vehicle. The dealer has told me that they don't have any idea why it still is having this issue...the other day the vehicle was being driven and reduced engine power mode set in and at the same time the power steering went out. Thought the power steering going out at the same time was a one time deal but it happened again the very next day. The vehicle had this issue on the highway the other day and nearly caused an accident. It is shocking that there are not thousands of complaints with this same issue, if you look up forums on this topic there are over 200,000 threads on this very issues. There are thousands of forum complaints about reduced engine power and how people have spent $1000 plus at the dealer and the issue still persists. The drive by wire functionality instead of using a throttle cable seems to be having issues that even gm doesn't have an answer for. Would appreciate any looking into on this subject.

Filed Jul 18, 2014 · Electrical, Engine · 148,591 miles · MI

I was traveling at approximately 55mph on a smooth paved county road with my A/C on. It was about 78 degrees outside. I had the A/C running about 15 minutes before the air just turned warm. I tried 3 times turning off the A/C and back on, and the air failed to cool. I stopped the truck, turned the A/C on, got out and looked at the A/C compressor. The A/C compressor was not engaging. I took it to a mechanic and the diagnosis was undetermined. 2 other mechanics failed to find the problem as well. The system was charged correctly, not leaking, and even replaced the HVAC control module and the problem was not fixed. There are many other cases just like mine and I would like gm to look into the problem. I am proud to be a gm customer and have always liked my gm pickups.