Hello, group: I have a 1989 Chevy Suburban, 350TBI. It's run like a top for the 5 years I've had it. Suddenly it won't start. It cranks, but won't turn over. Now I know it's either no spark or no fuel, right? Plenty of gas in the tank. My questions are how to properly check for spark? I don't want to screw something up, and I don't want 20,000 volts either. If I have spark, what's next? The fuel pump? Where is it, and how difficult is it to replace?
Thanks in advance for any help.