# Quad driver module circuit **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** skylark, buick\ **Created:** [November 7, 2010, 11:44pm UTC](https://community.cartalk.com/t/quad-driver-module-circuit/57304 "2010-11-07T23:44:22Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![funk](https://avatars.discourse-cdn.com/v4/letter/f/d07c76/32.png) [@funk](https://community.cartalk.com/u/funk)\ **Post date:** [November 7, 2010, 11:44pm UTC](https://community.cartalk.com/t/quad-driver-module-circuit/57304/1 "2010-11-07T23:44:22Z")
1991 Buick skylark gs,3.3L,3 speed auto. Where is the quad driver module circuit located? What does it do? ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 7, 2010, 11:59pm UTC](https://community.cartalk.com/t/quad-driver-module-circuit/57304/2 "2010-11-07T23:59:43Z")
The quad driver is located inside the computer. The quad driver controls various components such as the Check Engine light, electric cooling fan, EGR solenoid, purge solenoid, etc. If there’s a problem with the quad driver, the computer is replaced. Tester ---
**Author:** ![funk](https://avatars.discourse-cdn.com/v4/letter/f/d07c76/32.png) [@funk](https://community.cartalk.com/u/funk)\ **Post date:** [November 8, 2010, 1:50am UTC](https://community.cartalk.com/t/quad-driver-module-circuit/57304/3 "2010-11-08T01:50:17Z")
Thanks a lot, that explains many things. You’ve been a big help-Karl