If you need to change a weak or dead battery in the key fob remote control for the keyless entry system of your 2nd generation (2015, 2016, 2017, 2018, 2019 and probably also the updated 2020 model year) GM Chevy Colorado truck, check out my DIY tutorial for the procedure (with the compatible replacement part number) by clicking on the text link or thumbnail image below.
2015-2019 GM Chevrolet Colorado Key Fob Battery Replacement Guide
Owners of the similar GMC Canyon, Chevrolet S10, Holden Colorado and the related Isuzu D-Max may also find the DIY instructions to be helpful.