# What's connected to RDO that can cause a parasitic draw (besides the radio)? (2000 GMC Jimmy)

**URL:** <https://community.cartalk.com/t/whats-connected-to-rdo-that-can-cause-a-parasitic-draw-besides-the-radio-2000-gmc-jimmy/193780>\
**Category:** Maintenance/Repairs\
**Tags:** batteries, jimmy, gmc\
**Created:** [November 8, 2023, 7:47pm UTC](https://community.cartalk.com/t/whats-connected-to-rdo-that-can-cause-a-parasitic-draw-besides-the-radio-2000-gmc-jimmy/193780 "2023-11-08T19:47:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cartalk.u6k6r\_186613](https://avatars.discourse-cdn.com/v4/letter/c/f19dbf/32.png) [@cartalk.u6k6r\_186613](https://community.cartalk.com/u/cartalk.u6k6r_186613)\
**Post date:** [November 8, 2023, 7:47pm UTC](https://community.cartalk.com/t/whats-connected-to-rdo-that-can-cause-a-parasitic-draw-besides-the-radio-2000-gmc-jimmy/193780/1 "2023-11-08T19:47:04Z")

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I went through the whole multimeter/fuse test to determine where the draw was coming from.

The only spike I saw was on the RDO fuse (I tested all the others just to make sure).

After research I found that (unsurprisingly) the radio is the device connected to the RDO fuse. So I removed the radio. (It’s after-market, BTW)

But the parasitic draw is still present.

I haven’t tested if I still get the spike (should I?).

Is there anything else connected to RDO that would cause the draw?

Thanks in advance.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [November 8, 2023, 8:11pm UTC](https://community.cartalk.com/t/whats-connected-to-rdo-that-can-cause-a-parasitic-draw-besides-the-radio-2000-gmc-jimmy/193780/2 "2023-11-08T20:11:30Z")

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The RDO fuse powers the radio, instrument panel, and the electronic climate control module if equipped.

Tester

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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:** [November 8, 2023, 9:07pm UTC](https://community.cartalk.com/t/whats-connected-to-rdo-that-can-cause-a-parasitic-draw-besides-the-radio-2000-gmc-jimmy/193780/3 "2023-11-08T21:07:25Z")

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Suggest to post make/model/engine/transmission configuration.