Disabling the switch (in my case, disconnecting it from the truck) means OD
cannot be switched off. PCM automatically assumes the truck will be operated
in OD capable mode. Thus a broken switch would likely be lack of OD lock
out.

Signature
Max
Give a man a match, and he is warm for a short while. Light him on fire, and
he is warm for the rest of his life.
>> HI,
>> 1992 5.2L D150. Was just wondering if anyone had any info about the
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>
> Have you checked fuse #2 in the fuse panel below the steering column?