2003 GMC Sierra 2500 fuel system problems

Filed Feb 12, 2020 · Fuel system, Steering · 157,000 miles · CA

Had injectors replaced under warranty at 50000 miles after noticing excess exhaust smoke on startup and also power steering hoses were leaking, again at 105000 miles they totally failed as I was bringing my wife home from hospital on I-15 in ca. Up cajon pass and had to be towed to dealer, but gm dealer would not cover injectors under warranty as truck was11 years old and their coverage was for 7 years only, now again had to have them replaced at 147000 miles because of excessive smoke on startup. This time I went to an independent shop as they were $1000 cheaper and stated these upgraded injectors should last 150000 miles not 50000. Had to have power steering hoses replaced again also along with power brake servo because they were leaking again at 157000 miles. I have all of this documented in writing by service depts.

Filed Feb 14, 2016 · Brakes, Fuel system · 100,010 miles · MD

Brake line rusted through and lost all braking capability. Luckly it happened pulling into my driveway and not on the highway! Fuel lines rusted through and leaking fuel puddling onto the ground.

Filed Feb 2, 2016 · Fuel system · 209,000 miles · SD · fire

Tl* the contact owns a 2003 gmc sierra 2500. The contact stated that after inspecting the vehicle, he noticed that the oil level was elevated. The vehicle was taken to an independent mechanic where it was diagnosed that the fuel injectors needed to be replaced. The vehicle was repaired however, the failure recurred after approximately 30,000 miles and the vehicle was emitting smoke. The vehicle was repaired with new fuel injectors but the failure recurred. The manufacturer was not made aware of the failure. The failure mileage was 209,000.

Filed Apr 10, 2015 · Electrical, Fuel system · 142,000 miles · CT

(electrical) as an ongoing issue, the dashboard gauges/indicators (I.e. Tach, speedometer, etc..) will sometimes not register until several minutes after the vehicle has been running (this could be for up to miles) it has not affected vehicle performance to date. (fuel/propulsion system) I have begun having issues where it goes into "reduced engine power". Further diagnostic attempts have LED me to believe that it is due to a faulty throttle position sensor (part of the throttle body), tac module, or app assembly (accelerator pedal). Most likely cause may be due to the throttle position sensor, as this issue has happened when the vehicle is on "cruise control". However, due to the inferior design of the throttle body unit itself, the manufacture has made it difficult or if designed to be impossible to replace just the tps, by riveting the tps to the throttle body, and may have to replace the whole throttle body. I am having the vehicle serviced for a complete diagnostic and repair, and will elaborate further upon successful repair if desired.

Filed Jan 13, 2015 · Fuel system · 118,736 miles · VT

Tl* the contact owns a 2003 gmc sierra 2500. While driving various speeds, the contact noticed excessive fumes coming from the exhaust of the vehicle. The vehicle was taken to a dealer. The technician diagnosed that four fuel injectors needed to be replaced. The vehicle was repaired, however, the failure recurred on multiple occasions. The manufacturer was made aware of the failure. The failure mileage was 118,736.

Filed Oct 26, 2014 · Brakes, Fuel system · 170,000 miles · NJ

Brake line leaks, brake stopped working because of rusted brake lines. Also fuel and transmission lines are rusted badly.

Filed Jun 11, 2014 · Engine, Fuel system · 162,000 miles · GA

I own a 2003 gmc duramax 167000 miles, it has been a great truck until recently, after engine gets hot it will not start back up until it has cooled off! Have not been able to find the problem yet, but found a lot of complaints online from people with the same problem, [injectors], very expensive to repair!!! This problem is very frustrating, would be great if general motors would correct this problem!!!!

Filed Oct 14, 2013 · Engine, Fuel system · 110,000 miles · CA

While driving, large amount of smoke came out. Took it to gm dealer who said that it the fuel injectors were leaking. Looked online and noticed hundreds of reports of the same action. Gmc apparently did an extended warranty for the issue, but only covered it for 7 years from time of purchase and up to 200,000 miles. Talked to local dealer who denied the service and gm wont replace the fuel injectors.

Filed Oct 3, 2013 · Fuel system · 165,654 miles · SC

2003 gmc sierra 2500hd the injectors want bad was told it was the fuel housing. So changed that now having to change injectors.

Filed Nov 21, 2011 · Brakes, Fuel system · 76,000 miles · CT

Tl* the contact owns a 2003 gmc sierra 2500. The contact stated while driving the service brake light illuminated. The vehicle was taken to a local mechanic who performed a diagnostic test that located the failure within the brake and fuel lines. The brake and fuel lines were corroded which caused the brake fluid and fuel to leak. A complaint was filed with the manufacturer. The vehicle was not repaired. The VIN was not available. The failure and current mileage was 76,000.