If the hood of your 2nd generation (2015, 2016, 2017, 2018, 2019 and probably also the revised 2020 model year) GM Chevrolet Colorado truck hasn’t been staying open by itself any more, you may need to replace the old hood lift support struts. Check out my DIY tutorial for the procedure (with the compatible replacement part numbers) by clicking on the text link or thumbnail image below.
2015-2019 GM Chevrolet Colorado Hood Lift Support Struts Replacement Guide
Owners of the similar GMC Canyon, Chevrolet S10 (Argentina & Brazil / Brasil), Holden Colorado (Australia) and the related Isuzu D-Max may also find the DIY instructions to be helpful.