New to this forum but have a 99 express 1500 new battery, starter, water pump, plugs/wires, fuel pump. I let it sit for a few days without cranking and now it want start. Starts slowly even with booster cables on.

 

Try cranking it with starting fluid and see if starts any better.

Also try removing the serpentine belt.

 

Have tried starting fluid with no luck, but haven’t tried taken belt off. Will that mess with my timing?

 

No, the serpentine belt has nothing to do with timing!

 

But what good would removing the belt do, don’t you need the belt to turn the flywheel to get motor cranked

 

No it doesn't turn the flywheel. It turns the alternator, water pump, etc. You can't run it for a long time after removing the belt if it does start. It would just put less drag on the starter. and might crank a little faster.

 

It's a quick and easy way to eliminate several things that might cause a slow crank. A seized AC compressor, alternator, power steering pump, etc.


You have a flywheel on the front of your engine? Do you drive one of these?

 

You should also check all your ground connections.

Battery to body,
Engine block to body strap,
Ignition component grounds,
etc.

 

Ok all of you that are trying to help (thank you big time by the way!)I took the belt off and still want start. I’ve got plenty of volts/amps, the starter is sounding and acting strong. All and any suggestions are welcome

 

Is the check engine light on?