Trailblazer 302 starting problem

[Chadwick]

Should I try charging the battery to see if that's the problem?

[Chadwick]

Yes both connections

[Chadwick]

Yes everything is good
i don't know how to check engine control switch
whats a new switch cost? Seems easy to replace...

[Chadwick]

Battery terminals are clean. Puts out 12.7voltsfrom battery and that's what it's getting at the starter but it's completely dead got cover off don't know how to check ignition....

[Chadwick]

No didn't jump it that's why it's got a newish battery. Turn switch and nothing happens no electrical no nothing. I checked oil and added a little and it started up but that was a day or so ago
ran it next day fine
tried to use it Friday and nothing, checked oil and it reads good??? Don't...

[Chadwick]

My 2004 trailblazer 302 is acting up. The other day I went to start and turned the ignition and nothing. My buddy said it's probably low on oil and won't let you start. The battery is less than a year old and I use it almost everyday for my business. Any ideas before i take it somewhere???
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