General Motors — Fuel Pressure Release
Maintenance · fuel system
From a General Motors service manual — check it applies to your exact model before use.
Before you start
- See COMPUTER RELEARN PROCEDURES before disconnecting battery.
Procedure
- Disconnect battery terminals. Loosen fuel tank cap to relieve tank pressure.
- Connect one end of fuel gauge hose to pressure relief fitting at rear of intake manifold.
- Place other end of hose in a container. Open relief valve to release pressure.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: General Motors service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.