A moaning or fog horn sound may be heard while turning at a slow speed. Installing a finned power steering cooler will help alleviate the problem, but it may be necessary to replace the power steering rack.
Problems for specific Dodge Grand Caravan years:
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Most reported Dodge Grand Caravan problems
Hood misalignment, cowl cover misalignment, wiper module drain tube(s), and/or the lower plenum drain hose may cause the HVAC housing to leak water onto the passenger side floor. Diagnoses will be required to confirm the location of a water leak in the front passenger area.
The door ajar light may illuminate and chime during driving, even when the sliding door is closed. Often, this is caused by a faulty switch in the C-pillar; a revised switch is available.
A failing head lamp switch can cause the head lamps and/or instrument cluster lighting to flicker or dim. The head lamp switch should have a noticeable click between each position; a "mushy" feel is a strong indication of a failing switch.
If the door lock actuators (integrated into the door latch assembly) are noisy and/or not working, the latch should be replaced. For some model years, the actuator for the sliding door is available separately from the latch.
A "tapping plate cage" on the driver side frame rail may cause a squeak or tick noise while driving, this is often misdiagnosed as a suspension problem. The tapping plate is a threaded plate which accepts one of the front sub-frame mounting bolts. The "cage" of the threaded plate may be touching the frame rail causing noise as the vehicle is driven. "Adjusting" the rear tab on the tapping plate cage so it no longer is touching the frame should eliminate this noise.
When braking during low speeds (under 10 MPH), the brake pedal may vibrate and the ABS hydraulic unit may cause a rumbling noise. This is caused by a momentary loss of the wheel speed signal to the ABS controller. Adjusting or replacing the wheel speed sensor will commonly fix this problem.