My 99 chevy suburban 5.3, 4WD causing steering problems


Old 12-07-08, 12:18 AM
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Question My 99 chevy suburban 5.3, 4WD causing steering problems

Any suggestions welcome. In Michigan at 20 degrees F, my steering is difficult and very erratic feeling when I am in AWD or 4WD. When parked & idling, it sounds like there is a pump that keeps kicking on & off. (This is kind of high pitch-not like the hum of the fuel pump.) This happens even when the engine is hot. When cold the steering wheel really fights back on a turn.
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Old 12-07-08, 05:15 AM
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Have you ruled out the power steering pump?
It takes more effort when 4wheel is engaged.
Old 12-09-08, 07:46 AM
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If you have variable rate steering the sensor may be bad. RW

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