Truck doesn't get driven much anymore so yesterday i went out and cleaned all the dust and bird poo off of it and noticed the ABS light was on and the BRAKE light. What could be wrong?
Brake's seem to work fine

 

The sensor on top of the rearend probably. Pull the connector and clean it and try that first.

 

Well went out and looked at it today and she puked. Barely had any brakes today got out opened the hood and it blew brake fluid out of the master cylinder. Im gonna get a new one and replace ill see how it works brakes were starting to feel weird before this hopefull this will fix it. Thanks

 

That will do it for sure.

 

Ahh i looked even farther and it also blew a rusted brake line. Looks like i have to take out the gas tank to get in there. What would be easier doping the tank or taking the bed off? Also i guess im gonna fix the gas gauge while im in there

 

Drop the tank and do it right. Syphon the gas out into a friends ride. Replace the whole brake line.

 

how hard is it to drop a tank in one of these truck's. I have the 36 gallon tank

 

It's not hard at all, the only PITA is how much gas is in the tank. If you have a floor jack or some one to help you it's even easier.

 

I have 2 floor jack's and an extra person

 

Well look in the DIY section above, #18 to be exact. And you'll be good to go. Props to the member that posted it.