What are the lines on a 97 Vortec?
What are the lines on a 97 Vortec? There are three lines to the tank. 3/8, 5/16, and 1/4 inch. 3/8 is the supply line. Fuel is pumped through this line from the tank to the fuel metering body. (No TBI on a 97 Vortec). The 5/16 returns excess fuel from the metering body back to the tank. The 1/4 line is the vent line. What kind of problem does a 1997 GMC pick up have? 1997 GMC K1500, K2500, K3500 Pick Up. All of the information you need to diagnose a misfire or a no-start problem (caused by the...