I have an 03 dmax. While driving it sounds like my attitude chirps once in awhile on a consistent basis, doesn't seem to matter what setting I am on. Anyone have any ideas about this or experienced this? Thanks.

What are your alarm points set at?

Thats a good question. Never even thuoght of that. Thanks.
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Look at your egt's also when it does this(what the attitude displays) could be the egt's are flaking out due to a freaked probe and setting off your alarm intermitently.