Jump to content

2019 AT4 Shifter stuck in park!!!

Sheldon Da Costa
 Share

Recommended Posts

  • Replies 61
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

John Theophilakos Enthusiast

John Theophilakos

Posted
Posted

No, the weather hasn’t made a difference for me. I purchased my car in middle of December and the first 3 weeks I owned the car it happened often. It only happened twice in the beginning of February and has not happened since. It seems the more my car has broken in the problem has corrected itself.  

JDM20 New Member

JDM20

Posted
Posted

My 2020 Elevation is stuck in park. Had it a week. 400 miles. Will see what dealer says...

Kyle Gilbertson New Member

Kyle Gilbertson

Posted
Posted

I took my truck in last week to the dealer and they confirmed I needed a part that they had to order from US. I just confirmed my booking with my dealer this morning. Not sure which part it is yet.

I noticed when mine was acting up the click I hear In the column when pressing the break pedal was faint or not there. When I told my dealer that, they new what to look for.
Temperature didn’t seem to matter.

Dnt Senior Enthusiast

Dnt

Posted
Posted

Maybe there was a forklift incident with some stored parts? The warehouse team probably scooped all the modules up and repackaged them before upper management found out about the minor incident............................. 

   

John Ladolcetta Enthusiast

John Ladolcetta

Posted
Posted
On 2/18/2020 at 8:02 AM, John Ladolcetta said:

2020 Sierra AT4 Less than 100 miles. Had issue twice in one day could not shift out of park. Brought it back to dealer and they never heard of this issue. I showed them previous post (FknLeon). They could not find anything but are going to order a part. Waiting on part.

Looks like the stuck in park issue is fix. Now I notice the Manual shift in low is not working. Back to the dealer.

antoin3 New Member

antoin3

Posted
Posted

Had the same issue on my 2020 LT TB.

Took it in, they saw the problem, told me we're ordering a part, 1 week later they changed it and it's brand new.

 

Part number is 84800777

 

Hopefully this help others.

 

Turrtlejet New Member

Turrtlejet

Posted
Posted

2019 AT4, I have a similar problem although,  i think mine maybe related to driving thru slush for 3 hrs, my underside is a block of ICE, you cant even see the tranny. I'm currently stuck in parking lot with temps out side around 0. It'll warm up later this week. My thoughts is the linkage is frozen in a block of ice. Lets hope that's what it is.

drivereye Enthusiast

drivereye

Posted
Posted

slt 6.2 max trailer,

owned the truck less than a week. Unable to shift out of park for several minutes 4 random times. Took it to dealers this morning and they said they could not do anything until it could be reproduced. I drove an hour home and it got stuck again in a parking lot. I called the dealer and told them to send a tow truck. After 5 minutes it magically worked and I drove it back in. It got stuck again with the counter person, and then again with the technician. They are ordering a new part (not sure which one yet) and I get to drive a little crappy buick while I make truck payments for a while.

John Ladolcetta Enthusiast

John Ladolcetta

Posted
Posted
On 3/14/2020 at 8:12 AM, John Ladolcetta said:

Looks like the stuck in park issue is fix. Now I notice the Manual shift in low is not working. Back to the dealer.

Dealer rebooted software and manual shift is working fine.

  • 4 weeks later...
  • 4 weeks later...
Jleslie52785 New Member

Jleslie52785

Posted
Posted

Have a 20 LT trailboss. Wont shift out of park in the morning..  Sent it to the dealer Monday,  Said they replaced the steering lock control. Well come Tuesday it happens again. Back to the dealership it went. I've called twice to see if they were getting anywhere and all they are saying is they have GM engineers looking into it. ?‍♂️?‍♂️?‍♂️

  • 3 weeks later...
CharlesP New Member

CharlesP

Posted
Posted

My 2020 RST also won’t shift out of park. It has happened several times. It’s been at the dealer for two days and they can’t replicate the condition and have no solution. 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,914
    Total Members
    8,960
    Most Online
    AidenVorpagel
    Newest Member
    AidenVorpagel
    Joined

  • Who's Online   3 Members, 0 Anonymous, 1,270 Guests (See full list)

  • Latest Articles

  • Posts

    • jake111
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By jake111 · Posted

      Thanks newdude!  By the time manual selection is needed, I'm probably too much of a control-freak to depend on the transmission sensing braking to activate automatic downshifting.  I would be anticipating the situation and already be manually downshifting.   This truck replaced a 2004.5 LLY diesel with the Allison 5-speed.  Putting it in T/H made noticeable differences (when the torque converter locked, upshift points, downshift behavior).  On this 2024 gasser with the 10L1000 I haven't been able to detect much, if any, difference.  Ok, I can never tell now when the torque converter locks up.  But I also don't notice differences in shifting.  For downhills, I've probably already manually downshifted by then anyway.  Since it's also more awkward (than the 2004.5) to engage/disengage I don't even bother.  Or maybe it doesn't really matter with just a 3k lb. camper in the bed?   Thanks also for the list of reasons the charging system might select various voltages.  However, what I am seeing doesn't fall into any of those categories.  It very definitely, and very consistently, rises after coasting/braking.  Maybe not immediately, but not very long after coasting/braking.  Very consistently drops voltage when no longer coasting/braking.  It might also be interacting with the camper battery charging (I might disconnect the camper and see if it changes the charging behavior).  I also need to recheck turning on headlights for when I want to force it to charge the camper.   Another JR, in June I converted the camper to LiFePO4.  Since it's not a good idea to try to charge lithiums directly using truck, I installed a Victron Orion XS DC-DC charger (which BTW is AMAZING!!).  Being cheap, I only had to buy that one item (besides the battery, of course) to do the conversion.  The camper OEM 120v battery charger (only 19 years old and works perfectly) and the truck feed the input to the DC-DC charger (not at the same time).  But I didn't want the camper charger feeding back to the truck so I kept the old separator.  I considered replacing the separator with a 30amp diode but that means more work and might add another 1/2 volt drop.  One thing that surprised me was the voltage drop over the long 10awg wire run, so I can only charge smoothly at 8 amps (because the DC-DC charger is completely configurable).  Another reason I don't want an added voltage drop with the diode.  I might also be a little lazy but all this work is being done under the sink with a small cabinet opening.    
    • davester
      cam upgrade in CA

      By davester · Posted

      apparently CA smog is (or at least was)  checking that the vehicle is using the oem and/or a ca smog approved tune, so I expect you'll fail inspection doing it.
    • davester
      Possible lifter tick after DOD delete

      By davester · Posted

      yes, leaking exhaust will mess up o2 sensor readings, which in turn messes up fuel trims.
    • Grumpy Bear
      Sugar Bears 2015 GMC Terrain SLE-2 2.4 AWD

      By Grumpy Bear · Posted

      286,740 Mile Services   8/6/2026   New AC Compressor. Refrigerant oil and dye, evacuate and charge system.  New exhaust system from cat back.  New Iridium plugs plus replace #3 coil Repair/rewire headlamp wiring (passenger side) and replace all forward bulbs. Polish lenses of both assemblies.  Pull rear rotors, clean and adjust parking assembly. Inspect, clean and grease front calipers. Check pads and shoes.  4 wheel power bleed of brake system. Dot 4 Reset idle speed 50 rpm higher New Serpentine belt.    Will need new pads in the rear in about 5K more miles.    Tax Title and License out the door just short of a grand.    AC clutch had bitten the dust. 1 year warranty on the pick and save replacement. Thing will make a Polar Bear cry Uncle.  He spent quite some time on the wiring. It was in the harness and he does nothing half. I got off cheap. I have considerable more light down the road. Sylvania Silver Star replacements.  Gas seal between the porcelain and shell of plug #3 was blown, cooked the coil. That was the cold miss.  Love the new exhaust. I can sneak into the neighborhood again.  Nice to have a working parking brake again. Belle Tire never got it done. That was disappointing.    This was one of her bigger bills and still way cheaper than a payment even given the oil consumption. This thing cost me under a hundred a month in repairs and normal routine costs. What is my incentive to replace it? 🤔           
    • AidenVorpagel
      cam upgrade in CA

      By AidenVorpagel · Posted

      hello I recently bought a 2012 gmc 1500 with a 5.3 and have a AFM disabler on it I'm interested in doing a cam but I'm worried if I remove the AFM system I will fail smog does anyone have info if they are able to detect that or a work around to it (not talking about hot smogging) please let me know thank you  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...