I was reading an interesting post by "LJ" on a speedo issue which pegs at 100 mph. It seems that there was some interconnection with the ABS unit. Lately, my '01 2500HD has been experiencing some ABS related issues in which it feels like the ABS unit is activating when I lightly hit the brake around town. It's intermittent, but even when traveling ~25 mph on side streets approaching an intersection or pulling out of my driveway, I can feel the ABS unit kick in- the stiffness in the brake pedal diminishes- but the truck will still stop if I press more firmly on the pedal.
Anyone experience such an issue with the earlier Dmax/Silverados? Is there also a sensor on the tail end of the tranny which may come into play? The ABS unit itself? The truck does have 291K on it- maybe it's just getting old (like the rest of us).....