Jimenez44

Ya’ll may want to try this first. I went down and purchased a couple bottles of Seafoam and another bottle of injector cleaner from Autozone. Ran one tank of the highest octane I could get, with the two bottles of Seafoam, and another tank with the highest octane, and the remaining bottle. I also purchased a whole new set of spark plugs while I was there. After running all the cleaners through, I had a friend clear the code for me, and I swapped out all of the spark plugs. Truck runs great now and haven’t had the light come back on.

Just drove 400 miles with no issues yesterday on my 2015 Silverado 1500 with 70k miles. Turned it on today and engine light was on. Took it by AutoZone to have it read, and it showed 3 error codes dealing with fuel injectors. Running some cleaner through it, along with 93 octane to see if it’ll help. Will call GM and see how much it would be to change them all out. If it’s ridiculous, I’ll do it myself and keep y’all updated with costs, parts, time, steps, etc.

Nice. Do you know what warranty it falls under? Bumper to bumper I assume?

What did the cost run you?

Just got my vacuum pump replaced today. $730. 2015 Silverado 1500 LTZ-Z71 2WD with 63,000 miles. I figured it would fall under powertrain warranty, but I guess not. Any idea on if it's possible to have the dealership pay for it? Also, they only replaced the Vacuum pump and belt. Shouldn't they have replaced more due to the service bulletin? Side note - Should I go ahead and change the oil in the truck? I read previously that the vacuum pump could cause metal in the oil?

Had the same issue while returning from out of town. Was going 75mph and had to start slowing down for a red light ahead. When I pressed the brakes, the pedal was stiff and there was no slowing response until I had to use both feet. I was able to pull over and get the vehicle to a stop, but it was a very sudden and scary moment. After shutting off the vehicle and restarting it, my brakes returned and I slowly made my way home the remainding 2 miles. However, when I started to brake to stop the vehicle before putting it into reverse to back into the garage, the brakes went stiff again and I managed to stop just a few feet from the wall. Had it towed to the Chevy dealership and was told it was a bad Vacuum pump. Now I'm out $700+. Picking up the truck from the dealership today and will post again if something happens. Truck is a 2015 Silverado 1500 LTZ-Z71 2WD with 63,000 miles. I think this a major safety concern.