Why wont the overdrive engage?

Asked by GuruF85GW Apr 29, 2020 at 06:05 PM about the 1999 Dodge RAM 1500 ST Club Cab 4WD

Question type: Maintenance & Repair

Got a 1999 4x4 dodge 1500 extended cab, the
button for overdrive will not turn off the "o/d off"
light, nor will it shift the transmission into
overdrive. What do I do?

1 Answer
41,240

TDolby answered 4 years ago

When the O/D light stay on, that means there is a transmission fault. You can actually pull the transmission codes. I would have a mechanic or transmission shop diagnose it, but for your age truck and not shifting into Overdrive, you are looking at a rebuild.

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