Other Fuel System Pump Problems of GMC Sierra

I was driving my truck up a 6% percent grade when the change fuel filter soon warning popped up, about a minute later the vehicle started to lose power, I kept driving to try and get over the hill so I could make it to a repair shop to have it checked out. I was only able to make it about 2 miles after the warning showed up before the vehicle completely shut down and would not restart. (there was not enough room on the shoulder to pull over on my side the road so I tried to turn across the highway where there was an emergency pull out and as I did the truck died sideways right in the middle of the highway, taking up several lanes of traffic, fortunately there was enough incline that I was able to roll backwards and pull over up against the guardrail) of course I had no power steering or power brakes since the truck was not running. It was a very dangerous situation! I was able to get my truck towed to the local gm repair shop where they determined that the fuel pump had a catastrophic failure and had sent aluminum shavings throughout the entire fuel system. They said the repairs would be approximately $10,000 so I contacted gm and described what happened, and they basically told me to go fly a kite. After doing some research online it looks like there has been a major problem with gm trucks with the duramax motor from 2011-2016 after they changed there fuel pump from the cp3 high volume low pressure pump to the cp4 high pressure low volume pump. Which means the pump runs with less lubrication which results in pump failure, and not just failure but catastrophic failure which causes major damage to the entire fuel system. I have been a loyal gm owner for over twenty years, and I am extremely disappointed that gm is not willing to make it right.

See all problems of the 2012 GMC Sierra 🔎.

When my issues started, I would fill my gas tank and the gas gauge would plummet to empty. While driving, it would go to full, back to empty or be anywhere in between. At that time, there no no mechanical issues, just the annoying fact that you had no idea how much fuel you actually had. This went on until this spring, when I had the first potentially dangerous incident. I was driving down a county highway at approximately the speed limit and the truck's engine just shut off. No power steering, nothing. It happened just as I was coming to a stop sign thankfully. I was about 50 miles from home and was able to call a friend that manages the collision center of a local car dealership to see about getting a tow or his opinion as to what was wrong. After about ten minutes and after numerous attempts, it restarted. I talked to several mechanics and got the same answer from all of them: the fuel pump and sending unit fail in GMC trucks around the mileage, 95,000 miles, that I currently have on the truck. The gas gauge is still erratic, I have had two episodes of the vehicle stalling and now the service engine soon light is coming on and when it is put on an analyzer it says emissions, but there is nothing wrong with the emissions system. I have also talked to owners who have had theirs replaced and everyone says to get a factory made pump because the cheap aftermarkets break down even quicker. I googled the information and the problem appears to be widespread.

See all problems of the 2001 GMC Sierra 🔎.

The contact owns a 2004 GMC Sierra. The contact stated that the brake lines and fuel pump was corroded. The vehicle was taken to an independent mechanic. The technician verified the failure and replaced both the brake lines and fuel pump. The manufacturer was made aware of the failure. The VIN was not available. The failure mileage was 40,000 and the current mileage was 60,000.

See all problems of the 2004 GMC Sierra 🔎.

The vehicle stalled 5 times in one morning while driving to work. The weather warmed up outside and the vehicle ran and started fine. The next evening the vehicle started fine, I got 1/2 block down the road it stalled again. I waited for a few minutes and it ran fine. The next morning it started fine and I drove it for miles, had no problems with it stalling. We called GMC to see if there was a recall on windshield wiper motor, because the wipers would work when they wanted to work. Not when you needed them to work. They had told us that there was also an ignition coil problem with this truck-they called the GMC dealer that was to do the recall work. A faulty ignition coil can give the same side effects as a defective fuel pump. We drove the vehicle to the dealer, when we turned the vehicle off it would not restart. The recall work was performed on the vehicle, but still would not start. The GMC dealer told us it was most likely the fuel pump, the dealer told us the fuel pumps in this vehicle go out "frequently. " but, he offered us to replace the fuel pump for $450. + including labor. Or sell us one over the counter for approximately $425. 00 + tax. And we could install it ourselves. Needless to say, we had the vehicle towed to our house and now are deciding what type of fuel pump should be bought for a vehicle that the fuel pump goes out frequently in. Our biggest concern is that this truck has 85,066 miles on it, and has been maintained to the highest standards. Why are the vehicles fitted with faulty/defective products. The pump can catch on fire, or go out if you hit too many bumps in the road. That is a manufacturer problem of a faulty product. Please let us know, how many fuel pumps we should plan on replacing in the normal life of this vehicle.

See all problems of the 1997 GMC Sierra 🔎.