Rear doors wont lock/unlock

[Tealah4u]

So both rear doors have stopped locking unlocking with fob/and driver door controls. 

 

Figured since both stopped it was a relay vs the actuator this time (we replaced one in front pass previously) 

 

2015 gmc sierra 3500 

Where the heck are the relays? Owners manual or fuse panel label doesn't say. 

Do I have to purchase the relay from GMC ? 

[djv1951]

I would guess the relays are part of the body control module

[gearheadesw]

Are you sure the button hasn't been pushed to disable the lock for the kids? Had to ask, sorry.

[redwngr]

On 4/7/2018 at 11:54 AM, gearheadesw said:

Are you sure the button hasn't been pushed to disable the lock for the kids? Had to ask, sorry.

If so, shouldn't they still work from drivers door and fob?

[redwngr]

On 4/6/2018 at 3:29 PM, Tealah4u said:

So both rear doors have stopped locking unlocking with fob/and driver door controls. 

 

Figured since both stopped it was a relay vs the actuator this time (we replaced one in front pass previously) 

 

2015 gmc sierra 3500 

Where the heck are the relays? Owners manual or fuse panel label doesn't say. 

Do I have to purchase the relay from GMC ? 

Does the passenger door unlock?

[Tealah4u]

On 4/8/2018 at 10:03 PM, redwngr said:

Does the passenger door unlock?

The front passenger door yes it locks and unlocks. Only the rear doors don't work 

[Tealah4u]

On 4/7/2018 at 11:54 AM, gearheadesw said:

Are you sure the button hasn't been pushed to disable the lock for the kids? Had to ask, sorry.

No we checked.