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sprinkles08, ASE Certified Technician
Category: Transmissions
Satisfied Customers: 22826
Experience:  Chrysler/Dodge/Jeep master tech ASE Master and Advanced Certified, Chrysler/Dodge/Jeep Master Certified, Trans Specialist
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Have 48 re have reverse but only have direct drive doesn't

Customer Question

Have 48 re have reverse but only have direct drive doesn't shift
JA: How old is the transmission? Have you noticed any leaking?
Customer: No
JA: What is the model/year of your Dodge?
Customer: 2004.5 ram 2500 5.9 diesel
JA: Are you fixing your Ram yourself? What have you tried so far?
Customer: Took tuner off removed codes
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 10 months ago.
Category: Transmissions
Expert:  sprinkles08 replied 10 months ago.

Hello and welcome to JustAnswer!

If the trans is stuck in third gear it's in limp in. When the powertrain control module sees an issue that will prevent proper operation it will shut off the power feed to the trans and lock you in third gear. The issue could be in the integrated power module, the trans relay, wiring, solenoids, or possibly the PCM itself (unlikely).

The first step in diagnosing the problem is to see what fault codes are setting and then testing can be done from there. What codes are currently setting?