mutlyi4

i have a 97 z28 auto trans and i keep blowing the ecm was told by ecm rebuilder that the ac controller could be blowing the ecm and that this is a common problem with this year car has anyone had this problem? and does anyone have a good wiring diagram for the ac and ecm circuits ?

Injuneer

I haven't seen this problem posted before in the many years I've been on this site (and several others).

I can e-mail you the A/C clutch control wiring diagram from the 96 shop manual, which should be similar. Very simple circuit - HVAC selector switch sends an A/C request to the PCM. PCM provides a ground to the AC clutch relay.

mutlyi4

that would be great ill pm you my email address

Injuneer

All anyone needs to do is left click on your screen name in any post. There are options for sending an e-mail, private message, etc.