Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
In order to be able to try and help you with this I need to know what year your Colorado is , I also need you to scan the computer system and see if there are an fault codes setting. Post back with complete information as well as all fault codes and we can work from there.
Im not sure this is something I am going to be able fix for you from here. I am afraid this is going to require some hands on testing. I will open the post back up for you and see if someone else can offer something different.
This has a recall on the throttle body and/or throttle position sensor. It's free of charge. I would have the dealer perform this first and see if it fixes your problem. I don't think it is a problem of undercharging or over charging of the alternator and charging system, that would not usually result in the throttle just momentarily going out.
Here is that tsb on the recall,
This special coverage covers the condition described above for a period of 10 years or 120,000 miles