Where's the fuse?

On Fri, 01 Jun 2007 20:12:20 -0700, Russ rearranged some electrons to form:

It sounds as if your speed sensor is gone. However, the flashing O/D light indicates that a code has been set. Have someone read it out and it will probably indicate the source of your trouble.

The flashing O/D light means that the transmission is unhappy.

Jeff Strickland expressed precisely :

You really must give your transmission some lovin' from time to time.

AFAIK the speed sensor is in the rear differential, and the cruise, speedo and ABS all use that sensor. Perhaps that's what set the code to get the O/D to flash, a transmission problem wouldn't cause those symptoms.

Until you get the code read, in the meantime you might try looking at the rear diff for a loose wire.

Will do! The two codes are P0603, internal control module keep alive memory error and P0500, a speed sensor malfunction.

I will check for the loose wire connections at the rear diff.

Just checked for loose wires, found the sensor on the diff, but saw no physical problems like loose wire, broken wire, etc.

Ideas?

Fix the Speed Sensor Malfunction, then see if the other error comes up again.

Sensor.

Wires are always a possibility, but the sensor that throws the code is the culprit more often than not.

I presume that by fix it, you mean replace it. Will do so tomorrow, and see what happens. Thanks for the guidance!

Russell

I concur, especially if your speedo does read above 45mph as you posted.

Well, "fix," could mean repair or it could mean replace. I can't determine which course of action is needed from here.

Replaced the module, it fixed the problems of the speedo, brake light, and cruise, as well as the O/D flashing. Interestingly, the P0500 error persists, but I see no outward showing of a problem. Will clear the DTC's again, and see what happens.

Thanks for the clues! Russell