45RFE Solenoid Kit 2004-09, new and ready to install. Fits the 45RFE. Ships fast from the USA.
A 2004-2009 45RFE that suddenly locks into second gear, flares between shifts, or sets a solenoid or pressure switch code after a few years of towing is very often telling you about the solenoid pack. This is a new solenoid pack kit for 45RFE trucks and SUVs of those years, in Mopar packaging. The listing photo shows the pack together with a pan filter, a small spin-on style filter and a pan gasket, so the electrical repair and the filter service can be done with the pan off once. Check the photo for the exact contents before you order.
The RFE family has no hydraulic governor and no conventional 1-2, 2-3 and 3-4 shift valves. Every shift is a solenoid event. Through these model years the pack carries six clutch solenoids (low/reverse, 2nd clutch, overdrive, underdrive, 4th clutch and multi-select), a variable force pressure control solenoid that sets line pressure, and the pressure switches the computer reads to prove each clutch actually applied. Sonnax notes the overdrive solenoid was dropped when Chrysler went to a five-solenoid pack, so the 2004-2009 units are the last of the six-solenoid design. Transmission Digest's ATSG coverage of the multi-select solenoid explains why one stuck solenoid in this pack can block reverse or drop the truck into a fixed failsafe gear.
Scan for codes first, then work electrical before hydraulic. Chrysler's service information treats a P0750 as strictly an electrical fault: wiring, the computer, or an open coil in the pack, and it warns against replacing the valve body for it. Unplug the 23-pin connector and check each solenoid's resistance against the Sonnax values (about 1.3 ohms for the shift solenoids, about 3.5 ohms for the pressure control solenoid), and look for green or pushed-back pins. Pressure switch and line pressure codes can come from low fluid, a worn pump or a leaking clutch circuit, so confirm the fluid level hot and read line pressure if you can. Our 45RFE shift solenoid testing guide covers the resistance checks and the 45RFE pressure control solenoid guide covers P0868 and P0869.
This kit is listed for the 45RFE from 2004 through 2009. Those years sit in the white-connector era that Sonnax dates from 2000 into 2009. The 2009 model year is the transition point toward the gray five-solenoid pack, and a gray pack cannot back-service a six-solenoid transmission, so on a 2009 truck look at your old pack before ordering. The safest match is to compare the connector color and the part number printed on your old pack with this one, or send us the year, model and VIN and we will check it. Every 45RFE part we carry is on the 45RFE parts page.
If a good pack does not cure the complaint, the problem is inside the transmission. A worn 45RFE pump can cause low line pressure codes, and a burnt clutch pack calls for a 45RFE master rebuild kit. Our valve body testing guide helps sort out which one you are dealing with.
| Fits | 45RFE 2004-09 |
| Part type | Solenoid Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for 2004-2009. Because 2009 is the changeover year toward the gray five-solenoid pack, compare the connector color and part number on your old pack, or send us your VIN, before ordering.
The listing photo shows a solenoid pack, a pan filter, a small spin-on style filter and a pan gasket in Mopar packaging. Check the photo for the exact contents.
The 45RFE and 545RFE share the same solenoid pack family of the same era, but always match the connector color and part number on your old pack rather than going by the transmission name alone.
It can be. A failed solenoid, pressure switch or connector puts the 45RFE into a failsafe gear. Read the codes and check solenoid resistance and fluid level first, because internal leaks can set pressure switch codes too.
Yes. Chrysler calls for a Quick Learn after a solenoid pack replacement so the computer relearns clutch fill volumes. Skipping it can leave harsh or soft shifts.
ATF+4 only. Do not use universal or Dexron-type fluid in a 45RFE.
