wont start on 2007 Chevrolet Avalanche

my 07 1500 LT avalanche has 100,000 miles,wont start battery good alarm still working,makes a click noise when i try to turn it over,i even tried to jump start it,

Asked by for the 2007 Chevrolet Avalanche
Same problem,137,000 miles, good battery, new battery. It just clicks. Did you discover the problem?
1 more answer
Have you tried to put on a new starter that's what i would start with first. you might be able to even take it off and take it to someone that rebuilds them and you might be able to save a few bucks