Overdrive Indicator Flashing
 

So last night I blew out what I believe is a coolant return hose the little 90 degree one on the back side of the head just above the EGR Plate. after the hose blew out my O/D OFF indicator started flashing while the overdrive was on. It doesn't flash at all when the vehicle isn't moving weather its in park or drive. And it stays lit when the overdrive is actually off. The over drive its self still functions properly so my guess is there is a connector around the bell housing that got wet or I might have accidentally disconnected something. Have any ideas?

A flashing "O/D" light is an indication of an auto transmission trouble code. I don't remember the exact procedure on how to check it, but it should be in the TSRM, as well as a description of said codes

okay thanks, do you know if there are muliple codes for a flashing O/D light? I dont have a code reader but i can look up the tsrm in my manuals and see if anything pops up about the O/D light.

wow okay there flash codes haha sorry bout that im either getting a 11 or 22 from what I looked up 11 is the coolant temp sensor and a 22 is the ecu? since there is no obvious problem mechanically should I just reset the ecu?

Try again.... those aren't transmission diagnostic codes. Did you follow the link I posted?

As for the code 11 and/or 22: What good will it do to ignore the ECU codes? Something IS ovbiously wrong or they wouldn't be present. You may reset them to see if they're old codes for things which may have been fixed in the past but it's not too likely.

TSRM says 22 is the CTS and 11 does not exist (not listed as a code). Don't know what source you checked from but the TSRM is the one to use... But you need to check the trans codes as per cre's link anyhow.

I'd lay odds on a speed sensor fault (42 or 61) as it only occurs when moving. Perhaps the wiring plug got wet or knocked loose but the code will at least give you an idea where to look closer

Took off the gauges and found out my speedo cable had been pulled out haha put some grease on it and stopped getting a fault code. Thanks guys!

Im gonna run a diagnostic again to see if im still getting an ecu code. Everything is working fine now so I think its an old code from when I did the rebuild.