GM has released a Service Update for certain units of the GMC Sierra and GMC Savana due to an issue with a fuel tank fuel pump module.

GM has released a Service Update for certain units of the Chevy Silverado and Chevy Express due to an issue with a fuel tank fuel pump module.

The company set us up with an E85-compatible, high-flow fuel pump module (PN L710101108) and stock GM Flex Fuel injectors. The 416-liter-per-hour capacity of the fuel pump was more than capable of ...

The fuel pump was installed into the factory fuel tank, and wired directly to the GM fuel control module. The wires were extended roughly 10 feet and wrapped with Painless Performance Classic Braid.

GM TechLink explains what happens if you mix DEF with diesel fuel. In the case of the fuel pump module, the steel and aluminum parts will start corroding.