1990 Pontiac LeMans BaseFACTORY OEM SERVICE PROCEDURE

Fuel System Pressure Release

Relieving Fuel Pressure

To remove any residual system pressure, remove fuel pump fuse (fuse No. 16, 20-amp) from fuse block in passenger compartment. Start and run engine until engine stalls or fuel supply remaining in fuel lines is used. Engage starter again for about 3 seconds. Turn ignition off and install fuse.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.