Operated locks from your Factory Key Fob:

Chevy Express 2-Door Security (rear swing and side sliding doors)
(2) M1 Locks

Chevy Express 4-Door Security (cab doors, rear swing, and side sliding doors)
(2) M1+ Locks (cab doors with built-in lock inhibitors)
(2) M1 Locks (rear swing and side sliding doors)
(2) Raised Strike Bracket (cab doors)
(1) Keyed Manual Release (in case of battery failure) Installed in cab door.

Operated locks from a Thunderbolt Key Fob:

Chevy Express 2-Door Security (rear swing and side sliding doors)
(2) M2 Locks (includes two pre-programmed Thunderbolt key fobs)
(1) Contact Switch
(1) Distribution Block (connects to the battery, then each lock gets wired into the block) Not required but highly recommended.

Chevy Express 4-Door Security (cab doors, rear swing, and side sliding doors)
(4) M2 Locks (one for each door) (includes two pre-programmed Thunderbolt key fobs)
(1) Contact Switch
(2) Raised Strike Bracket (cab doors)
(1) Keyed Manual Release (in case of battery failure) Installed in cab door.
(1) Distribution Block (connects to the battery, then each lock gets wired into the block) Not required but highly recommended.

InstallationTips

RESOURCES:

Begin with watching the general installation video and any supporting videos, and review photos of prior installations. Then follow the installation guide with the steps outlined. If you are not confident performing the installation or are unfamiliar with locating or connecting wires, we highly recommend hiring a professional.

REAR DOORS:

The lock should be installed inside the rear “passenger-side” door and have the bolt strikes into the opposing door. A raised strike bracket is NOT required on the rear Chevy Express door.

When routing wires outside a door, they should be routed through a door factory boot to protect the wires. If your van
needs the factory boot, we recommend purchasing one from the manufacturer. At the very least, you can use a high-quality thick gauge loom to protect the wires.

SIDE DOORS:

When installing a deadbolt lock in a side sliding door, it gets installed on the side towards the rear of the van, and the bolt strikes into the rear C pillar. If you plan to operate your Thunderbolts from your factory remote, connect the wires to the factory lock wires. If you use an M2 model lock, install the provided contact switch to bring power into the door. If you are installing the lock in swing doors, the lock should be installed in the door closest to the front of the van. Depending if your doors already have a factory boot to run wires into the door, you may or may not need a contact switch.

CHEVY EXPRESS CAB DOORS:

Cab door locks get installed inside the door, and the deadbolt engages into the mating B pillar. The Chevy Express cab doors have a wider gap to span, requiring a raised strike bracket accessory.
When installing locks in front doors ensure that no part of the lock interferes with the window rolling down.

NOTE: When operating the locks from the factory key fob, the M1+ locks with built-in lock inhibitors should be used where a passenger may be riding to prevent the lock from engaging while the van is driving for safety. If the Thunderbolt M2 locks are used, the locks should not be engaged while driving. Only engage the Thunderbolt locks while the van is not occupied.