Diesel Fuel System Problems of GMC Sierra 3500

The contact owns a 2020 GMC Sierra 3500. The contact stated while driving approximately 60 mph, the vehicle jerked, lost motive power, and almost stopped unintendedly. There was no warning light illuminated. The contact was able to pull into a parking lot, where the vehicle shut off. The contact stated that while attempting to restart the vehicle, the diagnostic trouble code: p129f was displayed, and the vehicle failed to restart. The vehicle was towed to the residence. The local dealer was contacted and advised the contact that the failure might be related to the fuel pump control module and that the part was on backorder. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 19,000.

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The contact owns a 2022 GMC Sierra 3500. The contact stated that the check engine warning light was illuminated intermittently. The contact stated while driving approximately 50-70 mph, the check engine warning light illuminated. Additionally, the contact noticed that the vehicle was experiencing reduced power and performance. The vehicle was taken to the dealer, where the nox sensor was replaced and a manual dpf regeneration was performed. The vehicle was repaired and remained at the dealer. The contact related the failure to gm campaign number: n212351211. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered. The manufacturer referred the contact to the NHTSA hotline for assistance. The failure mileage was approximately 68,000.

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I first noticed that the anti-lock brakes were activating at slow speeds ( 5-10 mph ) under dry road conditions. This was prior to brake line incident on 4-14-2012 but I am not sure of exact date. I researched the anti-lock brakes and found NHTSA id campaign #05v379000 action # pe05020 but this did not include my home state of kentucky. However, I have been working in ohio since the purchase of said vehicle 10-17-2001 to current date 2-11-2013. On 4-14-2012 I was preparing to take my boat to fuel it . While checking the trailer lights I stepped on the brake pedal and it went straight to the floor. I found that the brake line to the rear wheels had burst in half and was severely corroded. Upon closer inspection I found that all the brake lines showed signs of severe corroision. On 2-8-2013 I discovered that diesel fuel was leaking near the fuel tank and fuel cooler. It was found to be a corroded return fuel line between the cooler and the fuel tank . Again upon closer inspection all fuel lines show moderate to severe corroision.

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The contact owns a 2003 GMC 3500 duramax . The contact stated that the vehicle would stall without warning. The fuel injectors were replaced but the failure recurred and caused damage to the engine. The vehicle was not further repaired. The failure mileage was 80,000 updated 9/20/11 updated 2/23/12.

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The contact owns a 2003 GMC 3500 duramax . The contact stated that the vehicle would stall without warning. The fuel injectors were replaced but the failure recurred and caused damage to the engine. The vehicle was not further repaired. The failure mileage was 80,000.

The water in fuel sensor on my 2008 GMC 3500 hd with a 6. 6l duramax diesel. I had to take it in to the dealer they told me that I had water in my fuel. The had to flush my fuel system and replace the water in fuel sensor they charged me $840 for this repair. But the weird thing is the light never came on. And upon my research I came across this forum that claims this sensor never works. . Read more...

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- the contact states that sometime in August of 2006, fuel injected number 8 failed in her vehicle. On December 4th the electrical system failed to work involving injected number 8. On December 11th, injected number six on contact diesel engine truck failed while driving 55 mph. The contact states that he has spent over $1,000 of dollars repairing his truck and would like to know, if the manufacturer has confirm that there is a problem with the fuel injectors. The vehicle has been in for repair several of times, contact can provide any repair invoices if needed.

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