My 98 has 175K never chgd the fuel pump. It has about 38 psi pressure and I always keep above 1/4 tank and chg filter every year. Is it possible that it could last another 25k miles ??

It might. It might also make another 100k. It might crap out yesterday, too. There is no benchmark, and far too many variables.

I changed out mine at 120K on my 99 this past summer.

It wasn't dead, but I was getting sluggish aceleration. I was only getting ~37 lbs. of pressure at the rail. And it would drop when I rapped on the gas. Now that I have the new pump I'm getting ~ 42 lbs. that'* constant.

IMO, I would change your pump. That'* a lot of miles on one pump. So, if you'll have to do it sooner or later, you might as well do it now instead of getting stuck on the side of the road.

I just changed mine out at 223,500 miles on the SSEi, My SSE was changed at about 150,000

Just did my SSEi at 112k, and the SLE is coming due soon at 115k.

I'm at 210K on what is believed to be the OEM unit.

That'* the next thing on my list to change.

did you guys install OEM pumps?

I was in a bind and could only get ahold of a pump from an AutoValue store. It'* a Carter pump, which is part of Federal Mogul. It was a perfect plug and play, and the pump, strainer, and filter only cost $150 w/tax. That is about what you would pay for an ACDelco from GMPD but I couldn't wait for shipping.

I'm at 155,000 on the 97 SSEi, have 44lbs at idle and 60lbs at WOT.. varies with pedal in between.

Test the pressure again and rev it a little..see if the pressure remains constant, goes up and holds steady or drops.

Anything but drop, I wouldn't worry about.

Just rechecked, it goes to 42 psi at idle and jumps over 50 when rapping the pedal