Replaced the battery and the starter but the truck wont start.when u turn the key to start it nothing happens

check to make sure wire to solenoid on starter isn,t corroded.. also check if there,s a inline fuse from the battery .. check fuse panel under the hood for ign. fuse ..

KEEP MOVING COULD BE CONNECTION.

It may be the solenoid (electro-magnetic clamp) that engages the starter motor with the flywheel to start the car. Unfortunately, this usually involves replacing the entire starter.

sounds like a bad connection,it wont heat up the solenoid or the starter,check your hot and negative cables from battery to starter first could be the starter itself, ggod luck

if you turn headlights on and turn key to start do you hear clicking? if so starter is possibly bad,lets trouble shoot your problem.suggest you check the fuses under hood in black box,make sure those are good. when you turn the key, you should hear at least a click or else the starter is not drawing current.try turning the headlights on and at same time turn the key and try to start, if lights go dim the starter is drawing current, does it click? if so then bad starter. if no noise at all,,still could be a bad starter.suggest that you remove the starter and have it checked out.also make sure the car is in park for sure before you do any of this. hope this helps!!

I would have battery checked/charged and/or replaced. Then starter, then alternator checked.

When you say it doesnt start what do you mean? does the engine crank over but wont start, or is it that when you turn the key nothing happens,i will assume it does nothing when the key is turned just due to the fact you replaced the battery,the next step is to check for power at the starter,have someone turn the key to start and hold it there while you check for power at the small connection at the starter, the starter has two connections, one has power at all times and the other a small connection gets power when the key is in the crank (start) position, if theres power at the starter then you have a bad starter, if theres no power then you may have a bad key chip or a bad neutral safty swith, now if the truck is spinning over but not starting then the first common thing i would check is for fuel preasure at the injector rail, good luck hope this helps.

Check the starter maybe needs to be replace and check the carbon of the starter.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

check the starter if you power it on and there is no click there is a possibility tat there is a problem with the motor of the starter.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

Replce the Starter Relay in the Fuse Box under the Hood.