no start

[JonZ71]

im gonna go with battery especially if its clicking

 

[dcZ71]

Its like the first time I try to start it after not touching it for a few minutes, it trys to almost fire but it just cant.

 

[dcZ71]

both times its after its sat overnight so you would think battery. But if the battery reads 12.6, can it still not be healthy enough to start the truck?

 

[TruckinAin4Sissies]

Clicking could be ignition.




-Truckin'-

 

[dcZ71]

also unstable, where is this ground strap you mentioned?

 

[93SierraWT]

Check the connections on your starter.

 

[JonZ71]

hook a jumper box up to it..just because the battery reads 12.6 doesn't mean it holds its capacity amps.

 

[SAATR]

hook a jumper box up to it..just because the battery reads 12.6 doesn't mean it holds its capacity amps.

This. Get a helper and check the voltage drop when you're trying to crank it. If it bottoms out, it's the battery. If not, it's probably a connection issue somewhere.

 

[ChrisAU]

If the battery is 5 years old then you need a new one regardless.

 

[dcZ71]

left it on the battery tender all day while I was at work, got home started right up. I'll go find me an AC Delco Professional batt tomorrow.