# 2008 GMC Canyon won’t start unless ignition switch is on

**URL:** <https://community.cartalk.com/t/2008-gmc-canyon-won-t-start-unless-ignition-switch-is-on/125478>\
**Category:** Maintenance/Repairs\
**Tags:** canyon, gmc\
**Created:** [September 22, 2018, 5:49pm UTC](https://community.cartalk.com/t/2008-gmc-canyon-won-t-start-unless-ignition-switch-is-on/125478 "2018-09-22T17:49:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Glen35](https://avatars.discourse-cdn.com/v4/letter/g/ebca7d/32.png) [@Glen35](https://community.cartalk.com/u/Glen35)\
**Post date:** [September 22, 2018, 5:49pm UTC](https://community.cartalk.com/t/2008-gmc-canyon-won-t-start-unless-ignition-switch-is-on/125478/1 "2018-09-22T17:49:36Z")

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what causes truck to not start until you leave the ignition switch in the on position for 10 minutes with security light flashing, when light stops flashing turn key off then starts normally?

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [September 22, 2018, 7:49pm UTC](https://community.cartalk.com/t/2008-gmc-canyon-won-t-start-unless-ignition-switch-is-on/125478/2 "2018-09-22T19:49:27Z")

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Does the engine crank but not start? Might be a weak fuel pump. If it does not crank then maybe the ignition switch is bad. Any CEL codes?