Question Asked: after driving for awhile my overdrive light starts flashing on/off.
December 19, 2014, 04:12 PM
the truck will not down shift when stopping.if i turn the truck off and then start again it works normally for awhile and then starts flashing again.if i turn the overdrive off when driving in the city it works ok.also overdrive works good when driving at highway speeds.
Problem Reported: Harsh or Delayed Shifting of Automatic Transmission
April 20, 2011, 09:29 AM
<p>The <a id="ce_9527" class="ct_selected tooltip" href="/automatic-transmission">automatic transmission</a> may develop shifting concerns. On lower mileage vehicles, upgrading the software in the <a id="ce_9536" class="ct_selected tooltip" href="/PCM-power_train-control-module">powertrain control module</a> (PCM) and the transmission control module (TCM) may correct the problem. As the mileage increases, internal transmission damage can occur. Repairs could involve replacement of the valve body or a complete transmission rebuild. Whenever major transmission repairs are made, it is important to be sure the PCM and the TCM have the latest software updates to help prevent these issues from reoccurring.</p>