1973-1991 Dual fuel tank systems theory of operation - The 1947 - Present Chevrolet & GMC Truck Message Board Network
![I have a 1990 chevy 1500 5.7 tbi. My fuel pump wont run at all. I removed and auxillary harness yesterday and since then I have a 1990 chevy 1500 5.7 tbi. My fuel pump wont run at all. I removed and auxillary harness yesterday and since then](https://ww2.justanswer.com/uploads/amedee/2009-10-22_152650_1.gif)
I have a 1990 chevy 1500 5.7 tbi. My fuel pump wont run at all. I removed and auxillary harness yesterday and since then
![Amazon.com: A ABIGAIL Fuel Pump E3621S Compatible with Chevy GMC C/K 1500 2500 3500 1988 1989 1990 1991 1992 1993 1994 1995 V8 7.4L 5.0L 5.7L V6 4.3L : Automotive Amazon.com: A ABIGAIL Fuel Pump E3621S Compatible with Chevy GMC C/K 1500 2500 3500 1988 1989 1990 1991 1992 1993 1994 1995 V8 7.4L 5.0L 5.7L V6 4.3L : Automotive](https://m.media-amazon.com/images/I/515z4oZyReL._AC_UF894,1000_QL80_.jpg)
Amazon.com: A ABIGAIL Fuel Pump E3621S Compatible with Chevy GMC C/K 1500 2500 3500 1988 1989 1990 1991 1992 1993 1994 1995 V8 7.4L 5.0L 5.7L V6 4.3L : Automotive
![Amazon.com: DWVO Fuel Pump Assembly Replacement Compatible with 1988-1995 Chevy Chevrolet GMC C/K 1500 2500 3500 4.3L 5.0L 5.7L 7.4L, Easy Assembly Enhanced Turbo Pump : Automotive Amazon.com: DWVO Fuel Pump Assembly Replacement Compatible with 1988-1995 Chevy Chevrolet GMC C/K 1500 2500 3500 4.3L 5.0L 5.7L 7.4L, Easy Assembly Enhanced Turbo Pump : Automotive](https://m.media-amazon.com/images/I/71cXzOtxC7L._AC_UF894,1000_QL80_.jpg)
Amazon.com: DWVO Fuel Pump Assembly Replacement Compatible with 1988-1995 Chevy Chevrolet GMC C/K 1500 2500 3500 4.3L 5.0L 5.7L 7.4L, Easy Assembly Enhanced Turbo Pump : Automotive
![Amazon.com: Electric Fuel Pump, Replacement for Chevrolet Chevy GMC C/K 1500 2500 3500 1988 1989 1990 1991 1992 1993 1994 1995 V8 7.4L 5.0L 5.7L V6 4.3L Module Assembly OEM E3621S : Automotive Amazon.com: Electric Fuel Pump, Replacement for Chevrolet Chevy GMC C/K 1500 2500 3500 1988 1989 1990 1991 1992 1993 1994 1995 V8 7.4L 5.0L 5.7L V6 4.3L Module Assembly OEM E3621S : Automotive](https://m.media-amazon.com/images/I/41wXUxjQ-uL._AC_.jpg)
Amazon.com: Electric Fuel Pump, Replacement for Chevrolet Chevy GMC C/K 1500 2500 3500 1988 1989 1990 1991 1992 1993 1994 1995 V8 7.4L 5.0L 5.7L V6 4.3L Module Assembly OEM E3621S : Automotive
![1998 chevy 1500 truck. 305 v8. Changed fuel pump out and found fuel pump relay not pulling in. No 12 volts on coil of 1998 chevy 1500 truck. 305 v8. Changed fuel pump out and found fuel pump relay not pulling in. No 12 volts on coil of](https://www.justanswer.com/uploads/Wrenchtech/2007-12-06_203908_fuel_pump_98_1500_5.0.gif)
1998 chevy 1500 truck. 305 v8. Changed fuel pump out and found fuel pump relay not pulling in. No 12 volts on coil of
![1988-98 Chevy and GMC C/K 1500/2500/3500 Pickup Trucks, Blazer, Tahoe, Suburban, and Yukon On-Board Diagnostic System and Trouble Codes - Haynes Manuals 1988-98 Chevy and GMC C/K 1500/2500/3500 Pickup Trucks, Blazer, Tahoe, Suburban, and Yukon On-Board Diagnostic System and Trouble Codes - Haynes Manuals](https://haynes.com/en-us/sites/default/files/styles/opengraph/public/Chevy%20C1500%20Digital.jpg?itok=NnLDSngC)
1988-98 Chevy and GMC C/K 1500/2500/3500 Pickup Trucks, Blazer, Tahoe, Suburban, and Yukon On-Board Diagnostic System and Trouble Codes - Haynes Manuals
![Amazon.com: FAERSI Fuel Pump Replace# E3621S Compatible with1988 1989 1990 1991 1992 1993 1994 1995 Chevy GMC C1500 C2500 C3500 K1500 K2500 K3500 V8 7.4L 5.0L 5.7L V6 4.3L : Automotive Amazon.com: FAERSI Fuel Pump Replace# E3621S Compatible with1988 1989 1990 1991 1992 1993 1994 1995 Chevy GMC C1500 C2500 C3500 K1500 K2500 K3500 V8 7.4L 5.0L 5.7L V6 4.3L : Automotive](https://m.media-amazon.com/images/I/61cet+Gx1PL._AC_UF894,1000_QL80_.jpg)
Amazon.com: FAERSI Fuel Pump Replace# E3621S Compatible with1988 1989 1990 1991 1992 1993 1994 1995 Chevy GMC C1500 C2500 C3500 K1500 K2500 K3500 V8 7.4L 5.0L 5.7L V6 4.3L : Automotive
![1991 Chevy C2500 5.7l TBI. Until engine gets hot it lopes badly and will often die when put into gear. Even when warm, 1991 Chevy C2500 5.7l TBI. Until engine gets hot it lopes badly and will often die when put into gear. Even when warm,](https://ww2.justanswer.com/uploads/tim37857/2012-07-19_021611_egr.gif)