# 2012 Ford F150 clunk when downshifting

**URL:** <https://community.cartalk.com/t/2012-ford-f150-clunk-when-downshifting/114151>\
**Category:** Maintenance/Repairs\
**Tags:** ford, f150\
**Created:** [March 21, 2018, 9:17pm UTC](https://community.cartalk.com/t/2012-ford-f150-clunk-when-downshifting/114151 "2018-03-21T21:17:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![SebastianC](https://avatars.discourse-cdn.com/v4/letter/s/85f322/32.png) [@SebastianC](https://community.cartalk.com/u/SebastianC)\
**Post date:** [March 21, 2018, 9:17pm UTC](https://community.cartalk.com/t/2012-ford-f150-clunk-when-downshifting/114151/1 "2018-03-21T21:17:02Z")

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when slowing down from 3nd/2st gear the truck would jerk and have a hard downshift and hear a clunk

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [March 21, 2018, 10:45pm UTC](https://community.cartalk.com/t/2012-ford-f150-clunk-when-downshifting/114151/2 "2018-03-21T22:45:52Z")

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Manual transmission? If automatic do you hear a clunk going from reverse to drive?

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**Author:** ![wentwest](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/wentwest/32/6073_2.png) [@wentwest](https://community.cartalk.com/u/wentwest)\
**Post date:** [March 22, 2018, 1:38am UTC](https://community.cartalk.com/t/2012-ford-f150-clunk-when-downshifting/114151/3 "2018-03-22T01:38:29Z")

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Look in the owner’s manual in the glove compartment to see how, then check the level of the transmission fluid.

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [March 22, 2018, 2:34am UTC](https://community.cartalk.com/t/2012-ford-f150-clunk-when-downshifting/114151/4 "2018-03-22T02:34:49Z")

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Check driveshaft u-joints and splined joint & carrier bearing (if applicable)