2019-2021 GMC Sierra 1500 Auto Start Stop Eliminator | Plug & Play
Description
2019-2021 GMC Sierra 1500 Auto Start Stop Eliminator
The GMC Sierra 1500 Stop/Start system can automatically shut the engine off when the truck comes to a complete stop and restart it as driving resumes. For owners who normally prefer the system disabled, the frustrating part is not necessarily the feature itself—it is having to make the same selection again after restarting the truck.
GMC states that when a vehicle is equipped with the Stop/Start deactivation switch, the feature can be switched off for an ignition cycle, but Stop/Start is enabled again each time the vehicle is started.
The Recontrol-X Auto Start Stop Eliminator is designed to restore your preferred Auto Stop OFF setting automatically, eliminating that repeated startup routine while keeping the original factory control available.
Keep Your Preferred Auto Stop Setting
No repeated button press on every startup: If you normally drive with Auto Stop disabled, the module handles that preference automatically instead of making you remember the A-OFF button every time.
Factory A-OFF button stays functional: You retain normal access to the original switch rather than permanently removing the driver's control of Stop/Start.
No ECU tune or software flash: This is a switch-interface solution. The module works through the factory Auto Stop button wiring rather than changing the engine calibration.
This switch-based approach is also how established Sierra-specific products address the same problem: they connect at the factory Stop/Start switch and automatically restore the driver's selected preference.
6.10-Inch Inline Switch Harness
The supplied module measures approximately:
6.10 inches / 155 mm overall
Its two factory-style connectors allow the eliminator to sit inline between the truck's existing wiring harness and the Auto Stop/Start button assembly.
That makes this a dedicated electrical interface rather than an OBD dongle or a workaround that requires disconnecting another unrelated vehicle sensor.
Center-Stack Installation
Installation takes place behind the Auto Stop/Start switch assembly in the center-stack control area.
The installation process is:
1. Remove the lower trim bezel fastener and release the lower trim.
2. Carefully release the surrounding trim panel.
3. Remove the required panel screws and gain access to the switch-bank wiring.
4. Disconnect the factory Auto Stop switch connector.
5. Insert the Recontrol-X eliminator inline between the factory button and original wiring harness.
6. Fully seat the connectors, secure the module, and reinstall the panels.
No factory wire cutting
No wire splicing
No permanent connector modification
No ECU flash or coding required for this switch-harness installation
Actual Sierra owners also repeatedly mention that the main installation concern is not electrical complexity but carefully removing the trim without forcing clips. Once the switch connection is accessible, the inline installation itself is straightforward.
Why the Factory Button Still Matters
This product should not be presented as simply “deleting” the factory system forever.
The better description is:
It restores your preferred setting while retaining factory switch control.
If you normally want Stop/Start OFF, you no longer need to make the same selection after each restart.
If you later want to change the Stop/Start setting manually, the original switch remains available.
That distinction makes the page more accurate than using phrases such as:
Permanent ESS Delete
Auto Stop Removed Forever
which imply a different type of modification.
Vehicle Fitment
Designed for:
2019 GMC Sierra 1500
2020 GMC Sierra 1500
2021 GMC Sierra 1500
Trim and engine configurations are not separately specified for this listing.
A second check is still important:
The truck must actually be equipped with the factory Stop/Start system and A-OFF button.
GM notes that some 2021 vehicles were built without Stop/Start, so the presence of the actual factory switch should be confirmed rather than purchasing solely by year.
Before You Order
Confirm your truck is a 2019-2021 GMC Sierra 1500.
Confirm there is a factory Auto Stop/Start A-OFF button in the center-stack switch bank.
Compare your switch layout with the product and installation images.
Do not order this product to add Stop/Start to a truck that was never equipped with the system.
If your dashboard or switch harness has been modified, inspect the connector before purchasing.
What This Product Does Not Repair
This module is intended for a normally functioning Stop/Start system that the driver prefers to keep OFF.
It is not designed to repair:
Stop/Start unavailable messages
Battery or charging faults
Damaged switches or wiring
Existing diagnostic trouble codes
Abnormal stalling or restarting
GMC notes that battery charge, temperature, climate-control demand, hood position, driving modes and other conditions can naturally prevent Auto Stop from occurring.
Vehicle Fitment
Additional Information
| Brand | Recontrol-X |
Reviews
S&Q
Does this Auto Start Stop Eliminator fit my 2019-2021 GMC Sierra 1500?
It is designed for 2019, 2020, and 2021 GMC Sierra 1500 trucks equipped with the factory Stop/Start system and A-OFF button. Confirm the button is present before ordering, especially on a 2021 truck, because some 2021 GM vehicles were produced without Stop/Start.
Will I still need to press the Auto Stop Off button every time I start my Sierra?
No. The eliminator is designed to automatically restore your preferred Auto Stop OFF setting after startup so you do not have to repeat the same button press on every drive. GMC's factory system normally enables Stop/Start again when the truck is restarted.
Does the factory A-OFF button still work after installation?
Yes. This switch-based module is designed to retain the factory Stop/Start button, so you can still manually change the setting whenever you want rather than permanently losing control of the feature.
Where does it install, and how much of the dashboard has to come apart?
The 6.10-inch harness installs behind the center-stack Auto Stop/Start switch assembly. The lower and surrounding trim panels must be carefully released to access the switch connector. Once accessible, the module plugs inline between the factory button and vehicle harness. No factory wiring needs to be cut or spliced.
My Sierra already says Auto Stop is unavailable. Will this product fix it?
No. This product is for a normally functioning Stop/Start system that you simply prefer to keep off. If Auto Stop is already unavailable because of battery charge, temperature, an electrical issue or another vehicle condition, that problem should be diagnosed separately.