Checking the fluid requires a special dipstick as well as a chart and the Diagnostic scan tool to read the transmission fluid temperature. The dipstick tool is measured off in 10mm increments and those increments refer to a specific temperature on the chart. If the temp and measurement do not match then fluid will either need to be added or removed.
As far as your shudder goes, have your dealership look at all of the tsb's out for the nitro as they have had the most problems with the 42rle trans
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2008 KK Liberty Sport NIGHT OPS EDITION + GILLS
OEM & Custom Skids - Factory Tow Package - Rock Lizard Skink Super Sliders
Prototype JBA 4 Inch Lift - JBA UCA's - Flowmaster Super 44 OR - Whacked Resonator
Jet Stage 2 - RL Gecko Basket Rack - Custom Winch Bumper - Recon 10.5K Winch
