91 skylark ecm diagram

[Applewalkin82]

I am in need of a wiring diagram for a 91 skylark 3.3 from the ecm to the relays. Bought the car and pre-owned had removed the relays and the connectors trying to find how everything hooked up at the relays

 

[CorvairGeek]

I don't have the exact diagram for you, but this info may help. The Buick 3300 V6 used only one ECM (1228706) through out the production run from '89 to '93, and in both car lines (A-body and N-body). There are only 3 external relays controlled by the ECM, fuel pump, engine cooling fan, and A/C compressor. There would have been a fourth relay in the group, but that is for the HVAC blower, and not tied to the ECM.

 

[LARRY70GS]

This is an ABSOLUTE STEAL, The Chassis Manual will have everything you need.

1991 Buick Skylark Service Repair Shop Manual Factory Original | eBay

1991 Buick Skylark Service Manual. Condition is "Used". Shipped with USPS Media Mail.

www.ebay.com

1991 BUICK SKYLARK ORIGINAL FACTORY CHASSIS BODY SERVICE MANUAL SHOP REPAIR | eBay

FACTORY CHASSIS BODY SERVICE MANUAL. THIS IS THE MANUAL YOU NEED IF YOU HAVE ONE OF THESE VEHICLES. Manual is in MOSTLY GOOD condition. ORIGINAL NOT A REPRINT. MOSTLY CLEAN INSIDE.

www.ebay.com

 

[Applewalkin82]

You wouldn't know the color of those wires would ya