The B&M Locking Transmission Dipstick was designed to allow for a quick and easy check of the automatic transmission fluid level and fluid quality by the vehicle owner without having to go to the dealership. Fits 2015-2024 GM 1500 series trucks, 2015+ GM SUVs with 8L90E 8-speed transmissions, and 2017+ GM Colorado and GMC Canyon trucks with the 8L45E 8-speed automatic transmission. Features include billet aluminum fittings, stainless steel braided tube, and black mil-spec anodized aluminum 6061-T6 locking cap and bracket. This rugged unit replaces the factory plug on the transmission and mounts in the engine compartment for easy routine service checks. Additional features include an engraved B&M logo locking knurled handle cap and fluid level stamped indicator. This is the perfect compliment to our Hi-Tek 8L90E deep transmission pan #70396.