I need to buy a transmission control unit. I am swapping everything trying to chase down a PO706 code. Let me know if you have one for sale.

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JBA 4" lift, IRO Tri-link w/ wwdiesel bracket, JBA sliders, 235/85-16 Goodyear Wrangler Duratracs, Mercedes Benz forged ultralight wheels, Weeks stage 1 and 2, Weeks lift pump and harness, Weeks battery tray and AGM battery, GDE tune, Suncoast TC, updated front pump, HDS 001 T-stat, ARP studs, Front and rear Detroit/Eaton Truetrac LSD.

Any 45/545rfe controller will run the transmission. Just not with our shift points and strategy. Some have had good luck with the dodge ram controller. Just make sure you don't over speed with its knockdown programming.

I bought a second controller from an 02 gas liberty it ran in 4 gears when I tested it. I then brought it to GDE for their eco trans tune. They didn't guarantee the tune would load but it works perfect. Had it in for over 2 years now.

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Now have GDE full torque eco tune and eco transmission tune. Used an 02 liberty trans computer for my new trans tune.

Check your harness very very VERY well. I spent almost nine months chasing a P0714 tranmission code. Found the transmission harness chaffing on the A/C canister clamp on the passenger side firewall. PITA. The PCMs are tough, I did the same thing, bought one thinking it was the cause of the error, replaced the transmission module twice....

Did you do any maintenance lately? Been 4-wheeling? Check the connector on the transmission as well.

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Purchased 2006 LIberty CRD 82K 01/16
SS Cat Back Exhaust, Full EGR Delete,Provent, Michelin 245/70 R16 AT/2
Stock Tune, Serpentine Belt Service,160 Amp Alternator
10/17 96K, New Head, Injectors, ARP Studs, HDS T-Stat
04/18 99K, New Reman Trans
09/18 104K, Lift Pump
01/19 106K, OME Lift, Eaton TruTrac LSD in new rebuilt diff

I'll continue to hunt and look near where you found your problem. thanks for the tip. I replaced the solenoid pack. Problem went away for a day or two. I was having a lot of wheel speed sensor problems, and I changed right front hub and right rear sensor. Still had issues with the PO706 code and going in and out of limp. PO706 doesn't throw CEL. Then, about a month ago, no more limp mode for a month. I thought I was done with this problem, but it's back this weekend. The PO706 code is shifter position signal which is located in the valve body solenoid pack. I hate to drop another $250 on another solenoid pack, which is probably not defective, but I'm running out of ideas. I was hoping to get a spare TCM to try, and I could always use as a core for a GDE tune.

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JBA 4" lift, IRO Tri-link w/ wwdiesel bracket, JBA sliders, 235/85-16 Goodyear Wrangler Duratracs, Mercedes Benz forged ultralight wheels, Weeks stage 1 and 2, Weeks lift pump and harness, Weeks battery tray and AGM battery, GDE tune, Suncoast TC, updated front pump, HDS 001 T-stat, ARP studs, Front and rear Detroit/Eaton Truetrac LSD.

I didn't realize the gasser used the 545rfe too. Just spent $150 on a CRD TCM. I should have waited a few hours for your info and I could have saved the cash to put towards the GDE tune. Ah well. Price of knowledge and patience.

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JBA 4" lift, IRO Tri-link w/ wwdiesel bracket, JBA sliders, 235/85-16 Goodyear Wrangler Duratracs, Mercedes Benz forged ultralight wheels, Weeks stage 1 and 2, Weeks lift pump and harness, Weeks battery tray and AGM battery, GDE tune, Suncoast TC, updated front pump, HDS 001 T-stat, ARP studs, Front and rear Detroit/Eaton Truetrac LSD.

From another post:
Any TCM you get needs to be out of a vehicle that has a 545RFE transmission & has a separate standalone TCM.
Not sure if the 45RFE TCM's are fully compatible?
Probably should contact GDE and ask them for a list of compatible TCM PN's just to be on the safe side?

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Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount
98 Dodge Cummins 24 Valve

A older 45rfe TCM will work with the 545rfe but it lacks the programming for 5th gear.
So you would only have 4 forward gears.

I use a TCM from a 2005 Ram Hemi. Other than the shift points being different, it works great.
Just takes some getting used to the different shift characteristics.
In some ways its better. In some ways its not.

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U.S. Army Retired

I replaced the solenoid pack twice before I found the wiring harness fault. The harness passed continuity checks so I thought it must have been good.

I posted this image a few other places but here it is again, spent soooooo long troubleshooting this issue.

_________________
Purchased 2006 LIberty CRD 82K 01/16
SS Cat Back Exhaust, Full EGR Delete,Provent, Michelin 245/70 R16 AT/2
Stock Tune, Serpentine Belt Service,160 Amp Alternator
10/17 96K, New Head, Injectors, ARP Studs, HDS T-Stat
04/18 99K, New Reman Trans
09/18 104K, Lift Pump
01/19 106K, OME Lift, Eaton TruTrac LSD in new rebuilt diff

Where was this photo taken?

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JBA 4" lift, IRO Tri-link w/ wwdiesel bracket, JBA sliders, 235/85-16 Goodyear Wrangler Duratracs, Mercedes Benz forged ultralight wheels, Weeks stage 1 and 2, Weeks lift pump and harness, Weeks battery tray and AGM battery, GDE tune, Suncoast TC, updated front pump, HDS 001 T-stat, ARP studs, Front and rear Detroit/Eaton Truetrac LSD.