545RFE Pump 1999-2005, remanufactured and ready to install. Fits the 545RFE. Ships fast from the USA.
Early 545RFE trucks and SUVs are now well past 150,000 miles, and a common complaint on them is a transmission that will barely creep until the engine is revved, takes a long time to pick up Drive or Reverse, or flags line pressure codes once it is hot. This remanufactured 545RFE pump covers the 1999-2005 range and replaces the whole pump assembly, so the line pressure the unit depends on comes back without rebuilding a worn pump on the bench.
The pump is the only source of pressure in the transmission. It sits at the front of the case, its gears are turned by the torque converter hub, and it feeds main line pressure to the solenoid pack, valve body and clutches, plus converter charge, cooler flow and lubrication. The pump body carries the pressure regulator valve and the converter clutch valves, and line pressure itself is set electronically. Per GEARS Magazine, the controller runs the line pressure solenoid at about 5 percent duty cycle for maximum pressure and about 65 percent for minimum, and reads the outcome from the line pressure sensor.
On the earlier pump design there is a second weak point. ATSG's Pete Luban, writing in Transmission Digest, explained that the screws holding the spacer plate to the pump body sit in a main line pressure passage. If one of those screws backs out or is missing on the previous-design pump, line pressure dumps through the empty hole and the truck creeps only at high rpm or will not move. The later design casts those holes shut.
Check fluid level, the primary filter and its seal, and the line pressure sensor connector before condemning the pump. Then watch desired and actual line pressure on a scan tool while the fluid warms. If actual pressure falls away from desired, the pump or its regulator valve is the likely leak. If the codes are P0933, P0934 or P0935, the problem is in the pressure sensor circuit, not in the pump. Our pump failure guide has the full test sequence, and the valve body testing guide helps separate a pump problem from worn valve body bores that cause similar complaints.
This pump is listed for the 1999-2005 545RFE. Pump castings and the lube circuit changed during the RFE run, as covered in ATSG bulletin 13-08, and replacement pumps are offered both with and without a front seal. Compare your old pump to the listing photos, or send us the year and VIN and we will confirm the match. Later years are listed separately, for example the 545RFE pump 2006. The full range of parts for this unit is on the 45RFE and 545RFE parts page.
| Fits | 545RFE 1999-2005 |
| Part type | Pump |
| Condition | Remanufactured |
| 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 1999-2005 545RFE units. Pump castings and seal arrangements changed during that period, so compare your old pump with the listing photos or send us the year and VIN before ordering.
Low line pressure is the usual cause. On the previous-design pump, a loose or missing spacer plate screw in the main line pressure passage dumps pressure and produces exactly that complaint. General pump wear, a bad filter seal or low fluid can do the same.
A front seal, primary filter and cooler return filter, plus a cooler flush. On high-mileage early units, inspect and usually replace the clutches as well.
P0868 line pressure low with slipping points toward the pump or regulator. P0933, P0934 and P0935 relate to the pressure sensor circuit and should be diagnosed electrically first.
ATF+4 only. Chrysler lists a 5.2 L service fill on 4x2 and 6.2 L on 4x4, and about 14 to 16 L after an overhaul.
