Originally Posted by dbaas (Post 451120)

Waited another day, tried to start. Whine was there, blazer started. Quickly drove to station and put in more gas. Drove 20 miles to get new fuel pump, restarted many times. Anyway, strange behaviour, relay's are either good or bad, not intermittent. Ground connect could be culprit, but suspect its still a pump failing. Float could be failing or got stuck down causing the initial pump off condition, and prior gauge issues.

Not going to overthink it, still proceeding with replacement to play it safe.

Just hard to tear into a hairy job, when its actually working ( ie..don't fix it if it ain't broke).