what could cause my engine light to come on

"could be" and "might be" are awful big words on todays vehicles!a good starting point would be to take it to Autozone and have the code/codes read and printed out for you,it's free,then post the codes here.

same as my colorado. Auto Zone plugged in and found oxygen sensor it showed Book 1 #2 which meant the sensor in back load outtake there are 2 sensors.O;riellys said it was a special order part which also charges shipping. autozone carrys this in stock. I did not get the Universal part.