0 like 0 dislike
1.2k views
by

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?

Vehicle: 2001 chevrolet s10 4.3

1 Answer

0 like 0 dislike
by (13.4k points)
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

Related questions

0 like 0 dislike
0 answers 1.9k views
0 like 0 dislike
1 answer 433 views
0 like 0 dislike
1 answer 290 views
0 like 0 dislike
1 answer 297 views
0 like 0 dislike
1 answer 437 views

36.2k questions

32.2k answers

1.3k comments

22.8k users

Need A Repair Shop?
Find local automotive repair shops in your area.
Does your car have Safety Recalls? → Check here
...