Re: 5.0 gl tilt/trim squeaks intermittenly
Not enough information, but since the hydraulic pump draws a fair amount of amps, it could also be the belt to the generator. Could be an indication since you mention it happens when stopped or in neutral (assuming you mean engine still on, but on low rpm).
But then assuming you have a serpentine belt, and not a V-belt on a 2002, not so sure. Worth checking though. If serpentine belt, there might be other issues that need to be checked...