check for cracks or blisters in the rubber fuel lines near the IP or rusted through or pinholes in the metal fuel lines. lower pressure lines aft of the LP will not show major signs of fuel drips so the frame rail at the lines has to be observed closely and be sure you look all the way back to...
Might want to check the relay, the sound you might be hearing could be power jolting across the posts internal to the relay instead of the reset click.
'95's have a front engine ground on both sides of the block, a rear engine ground on passenger side which goes to the frame ground behind the passenger tire (provides PCM grounding) and a lift pump ground about a foot aft of the lift pump on the same frame rail as the LP.
Air in the fuel...
Biggest problem I found with most of the OBD-1/2 Scan tools I researched (by calling the tech support at the manufacturers) was that they will not do the Diesels. That is why I ended up going with GMTD ScanTech for my '95. Way cheaper than the Tech-2.
GMTD has a scan tool available for...