Re: fuel pump
Krayzie makes a good point. Don't do it on that year of vehicle. If the truck was carbed, I wouldn't see any problems in doing it. In fact, in my 78 Blazer I have an inline electric pump in. Works great. But on a 98 it is way too involved to try to do something like that. Go to gmpartsdirect.com and get your unit there. Same quality part for half the cost. Just make sure it is installed correctly. Also, just to be safe I would also install a new wiring harness for the pump, as recommended in the FSM. Sometimes things can get full of junk and can cause poor performance. Like Krayzie a also said, don't let the fuel go below a quarter tank. I learned that one the hard way on my truck. Bite the bullet and do it the safe way, especially if this is your DD. Good luck!