# 2003 Jeep Grand Cherokee 4-w drive

**URL:** <https://community.cartalk.com/t/2003-jeep-grand-cherokee-4-w-drive/23718>\
**Category:** Maintenance/Repairs\
**Created:** [December 21, 2008, 11:13pm UTC](https://community.cartalk.com/t/2003-jeep-grand-cherokee-4-w-drive/23718 "2008-12-21T23:13:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Griffin](https://avatars.discourse-cdn.com/v4/letter/g/ad7895/32.png) [@Griffin](https://community.cartalk.com/u/Griffin)\
**Post date:** [December 21, 2008, 11:13pm UTC](https://community.cartalk.com/t/2003-jeep-grand-cherokee-4-w-drive/23718/1 "2008-12-21T23:13:08Z")

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The positrack in the rear is locking up every time I turn. What can I do?

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**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\
**Post date:** [December 21, 2008, 11:22pm UTC](https://community.cartalk.com/t/2003-jeep-grand-cherokee-4-w-drive/23718/2 "2008-12-21T23:22:53Z")

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“What can I do?” You can provide a more detailed explanation. That’s what you can do.

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**Author:** ![vicpick58](https://avatars.discourse-cdn.com/v4/letter/v/e99b99/32.png) [@vicpick58](https://community.cartalk.com/u/vicpick58)\
**Post date:** [March 22, 2009, 12:26am UTC](https://community.cartalk.com/t/2003-jeep-grand-cherokee-4-w-drive/23718/3 "2009-03-22T00:26:31Z")

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This differential (D44A with Veri-loc) requires 75w140 synthetic lube with 4 oz of friction modifier added. Most likely whoever changed the fluid last time did not add the friction modifier.