I have had an '05 Liberty CRD for about 4 years now and I always questioned the downshifting from OD when climbing a grade but have never asked if this was normal. Here is the scenario: When cruising at highway speeds in OD and I come to a grade where the transmission has to downshift, it seems to drop 2 gear ranges then almost immediately upshift one gear range. It has done this ever since we got the CRD even before and after the GDE transmission tune. For other reasons, I replaced the torque converter and front pump but the downsiift from OD is the same. The transmission shifts fine from a start all the way through to 5th but again, when climbing a grade and needs to downshift, it seems to downshift to 3rd then almost immediately to 4th then after the grade is climbed back to OD. Is this normal for the 545RFE?

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2011 Ram 2500 6.7L Cummins Deleted w/MiniMaxx G56 HDD 5W-30 & Bypass Oil Filter
2005 Liberty CRD Limited (Cracked Block) Sold
2015 Cherokee Latitude 3.2L V6 (Replaced CRD)
1992 Dodge Stealth RT Twin Turbo Pearl White/Black Leather
2008 Kubota GR2110 Diesel
2006 Key West 186 Sportsman w/135HP Honda OB
1943 Farmall H Restored

Yes, this is normal. The "downshift" is it kicking out of overdrive. (The top two gears are overdrive in this app.) If you are over the mid-50 MPH range, it will go straight to 5th when it upshifts again, after you let off, just as you described. The exception is with the GDE "tow tune". With that, if you are over 55 and under 70, it will upshift to 4rth.

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

Upgrade to the ECO Full torque tune and you'll eliminate a lot of the down shifting. While towing our 3500# camper I can hold 4th in a narrow MPH range with my F37 tcm and full torque tune.

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

Last year with the same tuning, same mod, same camping trailer as Joe we get the same MPG My tranny act exactly like he said I keep in 4th passing big hill and never down shift. (Eco torque/Transgo shift kit)

Now with my lift kit, Moab wheels , big tires, tranny mod and my new heavy Equal-i-zer sway control hitch the result may piss me... To continue...

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2005 CRD Ltd/Tru-Cool 4454 LPD
/Filter bleeder CRDBV/Fumoto F102/ProVent 200/Euro TC
/Hayden HY2905 Viscous clutch with OEM 52079654AE fan mod
Samco/OME/Bilstein/JBA4.5/Mattech BTA Machined trans valve body
/BF rugged terrain 245/75/16 on MOAB