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2015 Sierra won't move

Ashlee Robinson
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Ashlee Robinson New Member

Ashlee Robinson

Posted
Posted (edited)
 
 
I have a 2015 GMC Sierra 1500 5.3 V8, been having issues lately with what seems to be shifting and gears wise. Started off riding really rough when shifting from V4 to V8 while accelerating, now this morning I left for work and came to the neighborhood stop sign and it completely stopped moving while in Drive, hitting accelerator the truck did not budge, still running and will shift into different gears but just won't move! No Dash lights have popped on at all. Help please!
Edited by txab
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Yotaman Enthusiast

Yotaman

Posted
Posted

Sorry it sounds like Wrecker Time. Find a reputable mechanic cause what you are describing is not gonna be good.

 

Yotaman

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  • txab changed the title to 2015 Sierra won't move
JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
1 hour ago, Ashlee Robinson said:

What about the Selector Switch ? 

Thinking either your torque converter or transmission have decided to fail.

 

You mentioned strange shifting, did you have a sensation of driving over "rumble strips" at around 1500 RPM, maybe 30 to 60 MPH?

Truckboattruck Enthusiast

Truckboattruck

Posted
Posted

Worst case you have soup for gears and the tranny is toast because the converter spat itself through it, or maybe best case scenario the shift cable is broken- but I'm pretty sure it just wouldn't shift if the cable were broken. Been awhile since I fixed that part so I don't recall.

JimCost is asking a good question that would help you determine.

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
Posted

I would put the truck in park, and confirm that it will not roll.

Then put the truck in neutral, and confirm that it does roll.

 

Then I would put the truck in 4x4 and see if it will move under its own power.

 

Also check the transmission fluid level and appearance.

Donstar Senior Enthusiast

Donstar

Posted
Posted

Take Yotaman's suggestion and find a trusted mechanic/transmission specialist.  A transmission in a '15 Sierra is several steps above a DIY project, imo.  

swathdiver Senior Enthusiast

swathdiver

Posted
Posted
On 12/29/2021 at 8:40 AM, Ashlee Robinson said:
 
 
I have a 2015 GMC Sierra 1500 5.3 V8, been having issues lately with what seems to be shifting and gears wise. Started off riding really rough when shifting from V4 to V8 while accelerating, now this morning I left for work and came to the neighborhood stop sign and it completely stopped moving while in Drive, hitting accelerator the truck did not budge, still running and will shift into different gears but just won't move! No Dash lights have popped on at all. Help please!

Transmission pump failure.  GM Remans come with a 100K warranty.  This time around, change the fluid every 40K miles and put in the lower temp transmission thermostat.  Change the torque converter too.

  • 1 year later...
Yotaman Enthusiast

Yotaman

Posted
Posted

Don't ya just hate when people do not follow up so others can learn if they have the same or similar issues.

Same advice as above to you though ChevyGirl777

 

Yotaman

  • 1 year later...
Efrain Vasquez New Member

Efrain Vasquez

Posted
Posted

I’m having trouble with my 2015 Silverado z71, when I put it in drive and go all of the gears do go in but the minute I let it off and give it a little bit more gas it’s doesn’t want to get the gears but ones I put it in park ,turn it off and turn it back on and put it in drive it goes the trucks moves and all of the gears go in again .can someone help me out what’s the issue with my truck ??? The check engine light came on but 15 minutes later it turned off

  • 4 weeks later...
Steelfire New Member

Steelfire

Posted
Posted

Experiencing the same issue with my 2015 as of yesterday. I am sure the torque converter and or tranny packed in. I will follow up when confirmed. 

#newjunk

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