# 2010 GMC Sierra 1500 - flash reprogramming

**URL:** <https://community.cartalk.com/t/2010-gmc-sierra-1500-flash-reprogramming/135836>\
**Category:** Maintenance/Repairs\
**Tags:** sierra1500, gmc\
**Created:** [March 5, 2019, 2:55pm UTC](https://community.cartalk.com/t/2010-gmc-sierra-1500-flash-reprogramming/135836 "2019-03-05T14:55:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gary24](https://avatars.discourse-cdn.com/v4/letter/g/5f9b8f/32.png) [@Gary24](https://community.cartalk.com/u/Gary24)\
**Post date:** [March 5, 2019, 2:55pm UTC](https://community.cartalk.com/t/2010-gmc-sierra-1500-flash-reprogramming/135836/1 "2019-03-05T14:55:27Z")

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Can a flash reprogramer change the parameters in an ECM that trigger a check engine light.

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [March 5, 2019, 3:00pm UTC](https://community.cartalk.com/t/2010-gmc-sierra-1500-flash-reprogramming/135836/2 "2019-03-05T15:00:10Z")

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Yes it can.

It would be helpful if you explained your issue a bit more.