Question

1996 Chevrolet Impala SS with a 5.7-liter v8, has p1642 code. I don't know where and how to fix it. any help would be appreciated?

Answer 1

Hi there,

This code indicates an issue with the cooling fan relay. Here is some info for you. 

P1642 CHEVROLET - Fan Control Relay 2 and 3 Control Circuit
Read more: https://www.autocodes.com/p1642_chevrolet.html