For a 1997 GMC Suburban, the fuel pump sits inside the gas tank, requires roughly 56–66 PSI for the Vortec fuel injection system, and should only be replaced after checking the...

If your 1997 GMC Sonoma cranks but will not start, stalls when warm, loses power under acceleration, or shows an erratic fuel gauge, test the fuel system before replacing parts....

Bottom line: A 97 GMC Sierra fuel pump replacement is usually a tank-out job, not a quick swap under the hood. The pump sits inside the fuel tank on these...