My 09 caravan will not shift out of low speed into the next gear ,the enginge runs like a top but it simply stopped shifting.

Driver Shift Control (DSC) or Electronic Range Selection (ERS): This position (M-Manual / L-Low) allows the driver to utilize the DSC/ERS system. When the shift selector lever is moved to this position, the driver may select upshifts or downshifts by using the paddle switches located on the steering wheel/shifter. An upshift is requested by pushing either + button. Refer to the vehicle owner's manual for more specific DSC/ERS information.
Driver Shift Control (DSC)/Electronic Range Selection (ERS)
Refer to the owner's manual for specific instructions on DSC. The TCM will override shift commands when maximum engine speed is achieved and will protect from any downshift which may cause excessive engine RPMs.

Electronic Range Select (ERS) Mode
ERS mode allows you to choose the top-gear limit of the transmission and the vehicle's speed while driving down hill or towing a trailer. The vehicle has an electronic shift position indicator within the instrument panel cluster. When using the ERS Mode a number will display next to the L, indicating the current gear that has been selected.
To use this feature:
Move the shift lever to L (Low).
Press the plus/minus button located on the shift lever, to increase or decrease the gear range available.
When you shift from D (Drive) to L (Low), the transmission will shift to a pre-determined lower gear range. The highest gear available for this pre-determined range is displayed next to the L in the DIC. See Driver Information Center (DIC) and DIC Operation and Displays for more information. The number displayed in the DIC is the highest gear that the transmission will be allowed to operate in. This means that all gears below that number are available. For example, when 4 (Fourth) is shown next to the L, 1 (First) through 4 (Fourth) gears are automatically shifted by the vehicle. the transmission will not shift into 5 (Fifth) until the + (Plus) button is used or you shift back into D (Drive).
While in L (Low), the transmission will prevent shifting to a lower gear range if the engine speed is too high. You have a brief period of time to slow the vehicle. If vehicle speed is not reduced within the time allowed, the lower gear range shift will not be completed. You must further slow the vehicle, then press the - (Minus) button to the desired lower gear range.
Automatic Engine Grade braking is not available when the ERS is active. It is available in D (Drive) for both normal and Tow/Haul mode. While using the ERS, cruise control and the tow/haul mode can be used. See Tow/Haul Mode for more information.
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my van is doing the same exact thing but the othe day it was perfectly fine no slipping i went about 25 miles and i started off from a stop the engine rev and tranny slipped and the van died i restarted the van it runs great but acts as if there is no transmisson does not take power frm ngine when shfted does nothing please help

if the tranny is low on oil it won't be able to produce enough haydralice pressure in the tranny to shift to the next gear!, or there could be a faulty shift or speed sensior

you need to take this to dealer for repairs,there might be a short in the speed sensor wires that did that to your speedometer,the reason it won't shift is speed sensor,input sensor or output sensor on transmission.

speed sensor

If one cable is broke it won't shift right noy need to repalce the cable and cable housing then adjust the cable so it shifts. With the cabe broke it is trying to shift into 2 gears at the same time.

there are two speed sensors that determine when to shift. input and output speed sensor. there are black and gray and located on the front of the trans under the air filter elements. they are pretty cheap, and i would suggest a trans fluid change too.

BELIVE ME THIS HAPPENED TO ME AND IT WAS BECAUSE MY OIL WAS LOW CAUSING THE ENGINE TO REV HIGHER TO MAINTAIN SPEED.DO YOUR SELF A FAVOR AND CHECK (ALL) THE FLUIDS IN YOUR VAN 1'ST.HOPE THIS HELPS

check your tranny fluid and filter. you may have a clog some where or could be low on tranny fluid.

hi there try to get a price on the speed sensor located on the transmission this sensor tells the computer how fast the van is going in turn the transmission shifts gears and there will be information sent to the speedometer . the reason the van only goes in low gear is to protect the system because the sensor is damaged so replace the speed sensor and try again , let me know how its running after relpaceing the sensor good luck