Jump to content

2007 suburban 2500

JandJsuburban

By JandJsuburban
in Ask A GM Technician

Recommended Posts

JandJsuburban Enthusiast

JandJsuburban

Posted
Posted

P001 issue that never goes away. I bought it from a fellow that has changed almost everything to do with this code. He's taken it to some of the best techs in New England and no one has yet figured it out. It runs beautiful until you start getting rough shifts. It's fine right after an oil change. Good for 2,000 miles or so. Mobil 1 synthetic. Then you start getting rough shifts. Especially 1-2. The light eventually comes on . You clear it and then she is fine for a while. Then it seems it only acts up as the engine gets warm and things loosen up. When it's cold she runs amazing. There is a rinsing issue between the motor and tranny that is making this thing act whacked. Oil pressure cruises warm at about 38 psi and warm idle 22psi. It's really not the end of the world. It drives 95% of the time beautifully. I bought the vehicle fully knowing this suburban had this issue. It only has 103,000 on it and is absolutely beautiful. It has had a new tranny put in it because the torque converter went and the previous owner figured he'd change over everything. Any help or thoughts would be awesome.

JandJsuburban Enthusiast

JandJsuburban

Posted
  • Author
Posted

No. Check engine light will come on and throw p0011. I'll clear it and it stays off. I'll still get intermittent bad shifts here and there though.

JandJsuburban Enthusiast

JandJsuburban

Posted
  • Author
Posted

I've owned it for a couple weeks now and it came on only once. Shifting is periodic. But seems to happen only when it's nice and warm. The only other thing I've noticed. When I get a rough shift it takes a couple miles for it to shift smooth again then stays good. But on top of that, when I get a rough shift and if I put the selector to auto it will revert to 4 wheel hi. It stays in two wheel drive when things are shifting fine. Not sure if there is a connection but I'm trying to think outside the box.

Archived

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

Go to topic listing

  • Latest Articles

  • Posts

    • BlueV8
      AFM Disabler Question

      By BlueV8 · Posted

      A complete delete is the most thorough mechanical solution, but it is also major engine work. On a quiet truck that is still under extended warranty, opening the engine purely as prevention is difficult to justify. A plug-in disabler stops commanded cylinder deactivation, but it does not remove or repair the collapsible lifters, so it should not be treated as failure insurance. I would keep the oil full, document the maintenance, and have any persistent tick, misfire, or loss of power diagnosed promptly. If the engine eventually has to come apart, that is the logical time to compare an OEM-style repair with a complete delete. The right choice depends on the truck’s symptoms, warranty status, expected ownership period, and whether the engine already needs to be opened. We explain that decision in more detail here—full disclosure, this is our own guide: https://www.bluev8.com/blogs/news/do-you-actually-need-an-afm-disabler   One exception: some 2021 L82/L84 trucks have RPO YK9, meaning cylinder deactivation was already disabled in the factory ECM; on those trucks a plug-in disabler is redundant, although the AFM/DFM hardware remains inside the engine.
    • mark249
      Help purchasing a touch screen digitizer

      By mark249 · Posted

      Brought my 2015 Colorado into the dealership to check my touch screen issues, had that ghost touch thing happening. They said I needed a new touch screen and they could either order me one for $500. The lady at the service deck was nice enough to tell me I could order a touch screen online for less, she did stipulate that the touch screen had to be factory OEM, you can't pair an aftermarket screen to my radio seeing it was 2015, it had to be a GM factory OEM only. I found a few on Amazon and Ebay by the numbers on the back of the old screen, DJ080PA-01A GM# 22740886, Some said "OEM" in the description and others just said "Replacement". Would a replacement be the same as a OEM as long as it had the same numbers on the back of the screen? In some of the descriptions they also show different brand names but same numbers, is that an issue?  
    • Donstar
      Navigating senior years.

      By Donstar · Posted

      I have both but typically use the 4 legged walker (wheels on front, ski's on back).   The four wheeler is starting to be used on "longer" outdoor walks.  The 4 legged walker is particularly helpful in practicing good walking posture.  Both of my knees are at different stages of recovery and I'm trying to not develop poor habits.  I can actually manage with a cane but it's very difficult not to favor one leg over the other.  My PT recommends I continue with my 4 legged walker for a while.  Yesterday was four weeks since my last knee replacement and I'm excited about my progress to date.  It has been a hell of a rough journey so far but it is exciting to witness  systematic and continuous improvement.  I went for years watching the decline of my "mobility".  It seems that everyday now I am alerting my wife to something I can do now that I couldn't a day or two ago!  I encourage anyone facing the prospect of knee replacement to share any concerns with others who have had the surgery.  It isn't an instant fix but rather is a considerable amount of short term pain for long term gain.  Recovery time and pain levels vary for individuals post surgery but the end results are typically very positive and I've never encountered anyone regretting having had the surgery. 
    • diyer2
      AFM Disabler Question

      By diyer2 · Posted

      The lifter issue can be dealt with by shorter oil changes and quality oil IMO.
    • diyer2
      Winter Returned

      By diyer2 · Posted

      Got heavy rain, hail and light rain yesterday. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...