2001 chevrolet s10 has a code p1637 & p1638 it cranks but it wont start what can it be?

Question

I have a 2001 che s10 4.3l i was driving one day and came to a stop it started shaking and shut off and wont turn on anymor it has two present codes p1637 and p1638. What can cause this?

Answer 1

P1637 alternator load control circuit

P1638 Field duty cycle circuit

At the alternator there is a 2 wire connection if that connection is not properly connected , the alternator will not charge, Check the connection of the 2 wire connection make sure it is properly seated, Have the battery recharged, at idle the charging system should be at 13-15 volts