# Ignition Control Module

**URL:** <https://community.cartalk.com/t/ignition-control-module/38108>\
**Category:** Maintenance/Repairs\
**Created:** [October 14, 2009, 6:57pm UTC](https://community.cartalk.com/t/ignition-control-module/38108 "2009-10-14T18:57:04Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Kas\_Ofhs](https://avatars.discourse-cdn.com/v4/letter/k/ecc23a/32.png) [@Kas\_Ofhs](https://community.cartalk.com/u/Kas_Ofhs)\
**Post date:** [October 14, 2009, 6:57pm UTC](https://community.cartalk.com/t/ignition-control-module/38108/1 "2009-10-14T18:57:04Z")

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How would I change the ignition control module on a 1997 monte carlo z34?

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**Author:** ![jeff\_lowell](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@jeff\_lowell](https://community.cartalk.com/u/jeff_lowell)\
**Post date:** [October 14, 2009, 7:16pm UTC](https://community.cartalk.com/t/ignition-control-module/38108/2 "2009-10-14T19:16:32Z")

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i’ve never changed an i.c.m. onyour type of car,but i have changed them on others(oldsmobile).look for your coil pack(spark plug wires will be plugged in to them).remove the wire harness(should be a little screw).unplug the coil pack,the i.c.m.should lift right off.

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**Author:** ![jeff\_lowell](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@jeff\_lowell](https://community.cartalk.com/u/jeff_lowell)\
**Post date:** [October 14, 2009, 10:52pm UTC](https://community.cartalk.com/t/ignition-control-module/38108/3 "2009-10-14T22:52:14Z")

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i forgot to mention,you will probably have to unbolt the coils.sorry

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**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\
**Post date:** [October 14, 2009, 10:58pm UTC](https://community.cartalk.com/t/ignition-control-module/38108/4 "2009-10-14T22:58:19Z")

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Yeah, they should be allen head screws holding the coil to the module. Depending on the type, be ready for all the heads to shear off in the process. Don’t think you can get in there with a little PB Blaster.

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**Author:** ![jeff\_lowell](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@jeff\_lowell](https://community.cartalk.com/u/jeff_lowell)\
**Post date:** [October 14, 2009, 11:18pm UTC](https://community.cartalk.com/t/ignition-control-module/38108/5 "2009-10-14T23:18:35Z")

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i would think either a "torx"head screw,or a small metric bolt