Jump to content

Another silverado rolling in park

sliding silverado
 Share

Recommended Posts

Transient Senior Enthusiast

Transient

Posted
Posted (edited)

Are you putting the transmission in Park? My driveway has an 8% slope, and I've never had this issue. I put my truck in Park and engage the parking brake every time. I've never had this issue. Biggest reason I ask if you put your truck in Park is due to your rear wheels moving in that video. In Park the rear wheels should be locked. This looks like your truck is in Neutral. The difference between you and me is i don't get snow where i live. 

 

 

 

 

 

 

 

 

 

 

Edited by Transient
eppieguy Senior Enthusiast

eppieguy

Posted
Posted

Sure looks like it's the passenger side rear tire sliding on the snow or ice to me.

Silverado4x4 Senior Enthusiast

Silverado4x4

Posted
Posted (edited)
40 minutes ago, eppieguy said:

Sure looks like it's the passenger side rear tire sliding on the snow or ice to me.

You can't see the passenger side rear tire in the video but I do think it was sliding back on the ice otherwise it would have kept rolling like if it was neutral. I do know if I don't apply the e-brake and it's in park on my truck if I rock the truck pushing it back and forth the e-brake automatically comes on.

Edited by Silverado4x4
silveradosid Senior Enthusiast

silveradosid

Posted
Posted

putting it in park does not lock the rear wheels just the driveshaft. emergency brake will lock the rear wheels. my driveway is a 6% grade and my truck has done this twice. both times i had used 4x4 to get in the driveway and then shifted back to 2 wheel and even though it said shift completed some how the transfer case is staying in neutral and lets the truck roll out the driveway

asilverblazer Senior Enthusiast

asilverblazer

Posted
Posted (edited)
23 hours ago, sliding silverado said:

today started rolling back while in drive, with the foot off the brake. 

Not relevant, the parking pawl isn't engaged. Depending on the slope its normal.

Edited by asilverblazer
asilverblazer Senior Enthusiast

asilverblazer

Posted
Posted
18 hours ago, Silverado4x4 said:

You can't see the passenger side rear tire in the video but I do think it was sliding back on the ice

One tire stationary (or sliding on ice) and one spinning would be normal operation of the drivetrain when in park. Use the parking brake and/or engage 4 wheel drive to 'lock' more wheels. 

  • Like 1
jaxcam02 Enthusiast

jaxcam02

Posted
Posted
4 hours ago, asilverblazer said:

One tire stationary (or sliding on ice) and one spinning would be normal operation of the drivetrain when in park. Use the parking brake and/or engage 4 wheel drive to 'lock' more wheels. 

yup. hell a quick google search brings up plenty of explanations for this phenomena but anyone who has worked on cars with wheels off the ground should know this basic function of differentials.

 

https://www.quora.com/Why-might-wheels-turn-when-the-car-is-in-P-park#:~:text=Due to the way the,also be able to turn.

 

The transmission does “lock” the drive axle, yes. However it only locks the axle and since there is a differential, even when locked, the wheels will spin freely in opposite directions. For example, if you place the car in park on an incline and one wheel is on ice, and the other is on pavement, the car could still move. The tire on the pavement would roll downhill will the tire on the ice would spin uphill. This is in contrast to using your parking brake where each wheel is “locked” and will not spin (could still skid) but not spin.

  • Thanks 2

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

  • Latest Articles

  • Posts

    • Sdid
      2020 Silverado 1500 8speed gm needs to recall transmission

      By Sdid · Posted

      I have A 2020 1500 5.3 8 speed. LTZ. Transmission problems since 60,000 miles. Started when I go to store in morning to get my morning coffee before work leave truck running get back in put it in drive/ rev no movement step on gas a little slams into gear. Put in neutral step on gas little shake then put in gear and gose.  Shut truck off start .. ok now at stop light stop truck after a few seconds feel a little kick if that doesn’t happen stuck in 3/4 gear shut truck off wait few seconds and start usually ok again. If you down shift manually ok as long as you get into 1st before stop. If not it kicks . I WANT A NEW TRANSMISSION. Now I want a new truck it just hit 80,000 IDK IF ILL BUY CHEVY CAUSE THEY STILL HAVE THE PROBLEM AND REFUSE TO RECALL . Oh I’ve changed the fluid and filter 3 times now. And yes used mobile 1 not ac/delco cause it’s not meeting the requirements that mobile is did use ac/delco filter 
    • Chuck FB
      Joke Thread

      By Chuck FB · Posted

      Of course refrain from political debate but I myself have very dismal hope for what is all going on up here every where we turn so I nodded my head when I saw this joke.     
    • diyer2
      Navigating senior years.

      By diyer2 · Posted

      I'm looking at carpal tunnel surgery on my left hand and lumbar fusion. 
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      While waiting for parts I have been working on installing the AC compressor, new accumulator, and orifice tube. Also changed out the high side ball valve (original). The orifice tube that was in there wasn't too bad. Slightly dirty, a little bit of junk, but not blocked. Glad I changed it out.   The accumulator, which should have been a 5 minute job, may have just burned $50. Put some PAG in it, wrote the date and mileage on the side, fresh o-rings and gooey'd up the threads and rings with Nylog. Got everything connected and snugged and was going to vacuum down the system, and....   My manifold gauge won't fit on the port. It's not an R12 service port. It LOOKS like an R134 service port but the diameter is a hair too large. There's a sticker on the accumulator that says it's designed to be used with R12 and R134a systems only. So it's not R1234yf. Even if I reduced the diameter slightly with a file, the shoulder on the port is too large so the quick-connect valve won't lock on. I'm stumped. It's going back, and 50/50 on if they'll give me a refund.   Also, I did a fuel pressure test.... Key on, the gauge spikes to about 60psi and quickly bleeds off, like 2psi per second. The fuel isn't going into the plenum, no smell, starts fine, so I'm guessing there's a bad check valve in the pump and the fuel is just draining back into the tank. oh, hell. But, it shouldn't be a problem, pump primes just fine and the truck starts right up. It just means I can't really ever use fuel pressure to verify a leak at the injector or intake.
    • No F-bdy Bs
      SERCICE ESC message?

      By No F-bdy Bs · Posted

      Got this yesterday out of nowhere. Truck is a 25',6.6 gasser with 8k miles.  Only semi anomaly is that the truck had been sitting, uncranked for 6 days. Elec Stability Control showed immediately upon cranking, not while driving. No drivability issues, just the message. Battery didn't seem to be weak when cranking over.  I drove it, killed it, let it sit a few hrs with no avail.  Truck is 100% stock. No damage. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...