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Found 3 results

  1. I have a 2015 Chevy Silverado with a 6.2L. About 2 months ago I had bent a rod on Cylinder 4. I replaced all the rods, cleaned all the rockers, new lifters (even AFM), new gaskets, plugs, and plug wires. After the truck ran fine for about a week, then threw code P0106, which is a MAP sensor code. And for the life of me I couldn't get the code to stop showing up. If the code is deleted the truck runs perfectly fine for about 30 miles, then it throws the code and has a bogged down, flooded feeling. I've checked everything I can think of and don't know where to go next. What I've checked: Wiring Harness and Ground Connections New MAP and cleaned MAF Air intake gaskets and filter Cleaned Throttle body Checked Fuel Rails Plugs, Wires Compression tests (all at spec or very close) No leaks in intake All fuses After I spent two weeks after work on this thing I decided to take to the shop, they tried a new computer, new sensors, and ran a cylinder leak down test. The truck still is not fixed but I brought it home today because they told me the only option was to send the heads in to be cleaned and new valves. Said the carbon build up was causing this issue but I'm confused as to how that would affect MAP sensor. Especially when compression tests are all right where they need to be. When I replaced the rods I even checked to make sure valves weren't stuck and didn't make contact with head of piston. Anything help and am open to all options. My next step is to take a look at injectors and to replace/clean the valves myself.
  2. Hi. I bought a new 2021 AT4 March 5. 20 miles on it. Drove home from the dealer (4 miles) and the next time I turned it on, CEL and OnStar diagnostics emails me to take it to the service department. They say they reset MAP sensor and send me on my way. Later that day, same thing happens. I take it back in, they say MAP sensory needs replacing. They had it almost 2 weeks waiting on the part. After they replaced it, everything went fine for about 1200 miles and then I get blinking CEL for about 30 seconds then it stops. Next day, blinking CEL for a minute or so, and then it turns solid. I took it back to the dealer and they say the only code pulled was P0300 misfire. They have no idea what’s causing it, and quite frankly I’m pretty fed up at this point. They’ve had my new truck longer than I have in the month I’ve owned it. Has anyone had something similar happen?
  3. Hey there! My 90' K1500 350 TBI has suddenly been acting up when you go to give it gas or put it under load as in going up a hill. It just loses a lot of power and sputters around. My first thought was fuel pump. It is idling fine. It has been having a slower or prolonged crank to start. It was running smooth until I took it for a new set of tires (go figure). I pulled the codes and got 32, 43, & 44. I unplugged the ERG line and saw no difference in performance. My next planned steps are to test the fuel pressure and maybe replace the MAP sensor. Any other tips tricks or other things I can try b4 I start ordering up replacement parts and praying?
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