my 2006 hummer3 engine light went on after I put in gas. if I didn't put the gas cap on tight enough would that cause it and if so will the light still stay on until I get the computer adjusted

my 2006 hummer3 engine light went on after I put in gas. if I didn't put the gas cap on tight enough would that cause it and if so will the light still stay on until I get the computer adjusted 1 Answer

I have a 2007 hummer h3 and i just put in a new thermostat and then put in a oil switch and the oil, light still comes on what should I do now.fix it or sale it? 4 Answers

I have a 2007 hummer h3 and i just put in a new thermostat and then put in a oil switch and the oil, light still comes on what should I do now.fix it or sale it?

my 2006 hummer3 engine light is on just had it inspected and oil changed. if I needed oil wouldn't the oil light come on 2 Answers

My hummer3 won't start. Not the battery 10 Answers

Hummer3 won't start. Not the batteru

The Check engine light code reader won't activate when I plug in a code reader. 1 Answer

My check engine light came on so I plugged in my code reader into the code reader port and it would not power up. So to make sure that I did not have a faulty code reader I used a different code reade...