# 2006 Chevrolet Silverado 1500 - Shifts during Cruise mode

**URL:** <https://community.cartalk.com/t/2006-chevrolet-silverado-1500-shifts-during-cruise-mode/155783>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet\
**Created:** [January 3, 2020, 2:21am UTC](https://community.cartalk.com/t/2006-chevrolet-silverado-1500-shifts-during-cruise-mode/155783 "2020-01-03T02:21:30Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Guetschow](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@Guetschow](https://community.cartalk.com/u/Guetschow)\
**Post date:** [January 3, 2020, 2:21am UTC](https://community.cartalk.com/t/2006-chevrolet-silverado-1500-shifts-during-cruise-mode/155783/1 "2020-01-03T02:21:31Z")

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When under load or going uphill at between 68 mph to 75 mph on cruise control, when the speed drops by 3 mph, the engine will downshift two gears to bring it back up to cruising speed.

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [January 3, 2020, 2:31am UTC](https://community.cartalk.com/t/2006-chevrolet-silverado-1500-shifts-during-cruise-mode/155783/2 "2020-01-03T02:31:38Z")

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How long have you had this vehicle because that does not sound like a problem . Or has it just started doing that . Any chance that this is your first experience with cruise control?

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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:** [January 3, 2020, 2:38pm UTC](https://community.cartalk.com/t/2006-chevrolet-silverado-1500-shifts-during-cruise-mode/155783/3 "2020-01-03T14:38:47Z")

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Sounds like normal operation to me.

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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:** [January 3, 2020, 9:32pm UTC](https://community.cartalk.com/t/2006-chevrolet-silverado-1500-shifts-during-cruise-mode/155783/4 "2020-01-03T21:32:39Z")

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Sounds like normal operation to me, too. But I don’t know ANYthing about the truck or the hill except the year and model.

If you want better answers, add a LOT more detail, and we’ll try and help.

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**Author:** ![Scrapyard-John](https://avatars.discourse-cdn.com/v4/letter/s/f6c823/32.png) [@Scrapyard-John](https://community.cartalk.com/u/Scrapyard-John)\
**Post date:** [January 3, 2020, 9:47pm UTC](https://community.cartalk.com/t/2006-chevrolet-silverado-1500-shifts-during-cruise-mode/155783/5 "2020-01-03T21:47:29Z")

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It’s normal for it to shift out of lockup (1 shift) then down to third (second shift) on a decent grade. Sometimes, on a slight incline, my 05 Sierra will shift out of lockup only.