65RFE Archives - Transmission Digest
Troubleshooting tips: Narrowing down the reasons for a no-shift situation

A customer brought their 2013 Ram 1500 equipped with a 5.7L/65RFE powertrain to our shop in Omaha, Nebraska, with a complaint that it “will not shift at times.” A quick scan of the truck revealed a P0750 (Low/Reverse Solenoid Circuit) code. I took the vehicle for a road test and was able to duplicate the

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Chrysler RFE 4C Retaining Ring and Shim Kit

The 4C return spring retaining ring in Chrysler 45/545/65/66/68RFE transmissions is known to come unseated and pop off, resulting in transmission failure. The Sonnax 4C retaining ring and shim kit (#72978-01K) solves this issue while offering more options when setting clutch clearance, and improving 4C to OD shift timing when more aggressive quicker applying OD