If your second generation (2015, 2016, 2017, 2018, 2019 and probably also the 2020 model year) GM Chevrolet Colorado truck hasn’t been running well recently (surging, idling rough, hesitating, etc), you may need to clean or change the MAF (mass air flow) sensor. Take a look at my DIY tutorial for the procedure (with the compatible replacement part numbers) by clicking on the text or thumbnail image below.
2015-2019 GM Chevrolet Colorado MAF Sensor Replacement Guide
The procedure should be the same or similar for the LFX 3.6L V6, LGZ 3.6L V6, Ecotec 2.5L turbocharged I4 and the Duramax 2.8L turbodiesel I4 engines.
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.