Jump to content

First Error Code at 45K

willyr1er

Recommended Posts

willyr1er Enthusiast

willyr1er

Posted
Posted

Guess I have been lucky, just got my first check engine light yesterday after work. Trucks is at 45K.

 

Checked last night when I got home, P0451, evap pressure sensor error.

 

I just cleared the code and seeing if it comes back.

 

Anyone else gotten this code?

Justin101714 Enthusiast

Justin101714

Posted
Posted

Yes, more than likely the fuel tank pressure sensor is causing this. This code is checked when the engine is off, there's a small vacuum test that's done when the P0442 test is done. If the ECM is unable to see a zero pressure during the engine off test it'll set this code. Most of the time when the sensor is skewed, it'll read around 0.27-0.54 inHg on the scan tool. Most the time you can just unplug the sensor and watch the data again and you'll see it'll go to 0.00 inHg. Then you know it's the sensor. It's above the fuel tank mounted on the fuel pump module.

 

 

Sent from my iPhone using Tapatalk

Dozer466 Enthusiast

Dozer466

Posted
Posted

I had the same code pop up in December, I unhooked my battery and it hasn't come back since. I think you have to drop the tank to change the sensor so I was trying to avoid that if possible.

 

 

Sent from my iPhone using Tapatalk Pro

willyr1er Enthusiast

willyr1er

Posted
  • Author
Posted

So far the code has not come back on, and hopefully will not. I would rather not drop the tank to change the sensor.

  • 3 months later...
Will_Bottom New Member

Will_Bottom

Posted
Posted

Same issue occurred on my Silverado around 40k. It was so bad I could not fill up using automatic shut off pumps. Had dealership fix the issue because you do need to drop the tank and did not have time to mess with it. Wish I had still been under warranty, expensive fix, over $500.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      Looking at ordering a '26 WT because I want a std cab, std bed

      By Atlas · Posted

      GM's are stainless and have a fairly robust powder coating, although, still not worth $850 in my opinion. They will hold up a lot better than their cheaper steel aftermarket counterparts.   What I like about the GM step bars is dealers will often equip their dealer stock with them. Lots of margin. Which means a lot of people end up buying them because they're already on the truck, even if they don't like them. So it's pretty easy to find brand new takeoffs with hardware on Marketplace and Craigslist for about $250.   That's what I did for my crew cab. I wanted ZR2 rock rails for the look, but with the ability to bolt up GM's assist step package. From GM it's about a $2500 accessory all in. The old folks in my life can't get in the truck without steps. I found the whole package on marketplace for $180.
    • kr477
      Forward collision and lane keep assist still a problem on 2022 refresh?

      By kr477 · Posted

      I am really glad I found this post and this site... We have a 2022 1500 refresh LTZ that has these problems: - forward collision avoidance warning light - lane keep assist unavailable - adaptive cruise control unavailable   The truck was bought as a new leftover in 2023, so it was still under the 3/36 B to B when it went in for these problems earlier this year. It has been at the dealer on and off now for about 110 days now. These are some of the things they have done that I can read on the service tickets. - replace/add ground straps (4) - check all battery cables and vlts - replace serial data gateway module - replace front view camera - numerous reprogramming - a few calibrations (apparently ending with 'learned') Last week when I had it back the truck had those 3 warnings every time we used it except for 3 times. On three separate occasions the truck started and ran perfectly with no (zero) warning messages or warning lights lit - everything worked perfectly. Over that same time period the truck did not work on every other 'key' cycle which I would estimate at 60+ cycles. On those estimated 57 cycles it had the same 3 problems each and every time.   It is back at the dealer now - can anyone help at all with what the true problem might be?  Or possibly what can be ruled out leaving a lower number of possibilities? Thank you very much for any help you may be able to supply....     
    • Z45
      Looking at ordering a '26 WT because I want a std cab, std bed

      By Z45 · Posted

      As for the step bars, friend did just that, bought some cheap ones and we are in Michigan and they turned to rust in less than a year.  In 3 yrs he had to replace one of them because they rusted out from the inside even though he kept after them cleaning and polishing etc. Had to drive 300 miles (to Chicago area) to find a reg cab wt, he ordered one and dealer never got it and with winter approaching (plow truck) he needed fo find one ASAP.  Furd dealer found him one but he choose to drive to get a GMC.    Just what you can expect with cheap stuff, LOW quality. 
    • KARNUT
      Tonneau cover that does not leak water

      By KARNUT · Posted

      I’ve seen many times people over buy to start a business. Instead of quality equipment they buy junk and drive an expensive truck. Our first haul truck was a 2 ton wrecker with 6 cylinder to haul our equipment. It would go 60 miles per hour flat out. Our trucks were older trucks we could work on easily. Our equipment was first class that we could work without fear of breaking down. You could always use large trash bags to wrap for water proofing. Put the money where the return is. Comfort and luxury comes with success. Good luck in your venture.
    • cherryred21duramax
      Tonneau cover that does not leak water

      By cherryred21duramax · Posted

      Thank you, it looks like I have to get a topper or a box van.  Unfortunately, the only vans that can tow what I am looking for are going to be 3/4 ton vans, which may ride rough if I am going to use this on the road extensively.  I may also use it to take marketing clients out on the road.   Not knowing anything about starting a business, my goal is to start small, use things I already have & keep everything in good working order.  I have a small box trailer, need to install lights in it, and same for the topper itself.   How easy does Chevy/GMC make our trucks to upfit if we decide to add things like a topper and lights?  On Fords, the upfit process was rather easy.  Just tie the +12V of the lights to the AUX relay panel and the - to chassis Ground.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...