when I accelerate from stop here sound like rocks from the driverside also here it when I stop at light you guys know what that noise is I know I need new rear brakes soon dealer told me could it be from that or something else.

It's really hard to say from what you have writtten. If you've been in mud or deep water recently you could have small rocks lodged in your brake system. That usually makes sound all of the time until they come out though. If you have drum brakes on the rear (I'm not sure if any Libertys have had rear drum brakes) they could easily keep small rocks in them for a while. You said you need new brakes. If the linings are completely gone and you just have metal on metal, that can make a very nasty sound but you would feel very rough braking and certainly hear a grinding like noise whenever you applied the brakes. You really need to include more descriptive information for someone to be able to diagnose this. If your dealer has already looked at it, they probably gave you more information than you mentioned.

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2010 Liberty 4x4 Limited
Trailer Tow Group, Sunroof, Skid Plates

1999 Wrangler Sahara
2" Teraflex lift with flexarms, ARB air lockers Front/Rear, Skid Plates, BFG 31x10.50 ATKOs

Any chance there's gravel/sand on the road due to winter?

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2008 Jeep Liberty (KK) Ltd