Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Installation Procedure
2008 Pontiac Grand Prix BaseSECTION Installation Procedure
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Do not attempt to straighten kinked nylon pipes. Replace any kinked nylon pipes in order to prevent damage to the vehicle.
- Do not attempt to repair sections of nylon pipes. Replace damaged nylon pipes.
- Replace the vapor pipes with original equipment or parts that meet GM specifications.
- Replace the vapor hoses with original equipment or parts meeting GM specifications. Use only reinforced fuel-resistant hose identified with the word Fluoroelastomer or GM 6163M on the hose.
- Install the insulator pads to the fuel tank.
- Install the EVAP canister. Refer to Evaporative Emission Canister Replacement .
- Install and connect the fuel feed line (3), and the EVAP lines (1, 2). Refer to Plastic Collar Quick Connect Fitting Service .
- Install and connect the fuel pressure sensor and fuel sender jumper harness electrical connectors.
- Install the fuel tank onto a suitable jack.
- Partially raise the fuel tank until the electrical connections can be made.
- Connect the fuel sender jumper harness electrical connector.
- Completely raise the tank.
- Install the fuel tank strap bolts (3).
Tighten: Tighten the bolts to 48 N.m (35 lb ft).
- Remove the jack from the fuel tank.
- Position the fuel tank shield (2) to the fuel tank.
- Install the shield retainers (3).
- Install the rubber exhaust pipe hangers.
- Remove the support from the exhaust system.
- Connect the fuel feed (3), and EVAP (4) lines to the fuel tank lines (1, 2). Refer to Plastic Collar Quick Connect Fitting Service .
- Connect the EVAP vent pipe quick connect fitting (4) to the fill pipe EVAP vent pipe quick connect fitting (1). Plastic Collar Quick Connect Fitting Service .
- Connect the EVAP vent solenoid hose (2) on the tank to the EVAP vent valve solenoid hose (1).
- Install the fuel tank fill hose (2) onto the fuel tank (3). Install the hose over the orientation feature (4) on the tank until fully seated to the tank.
- Tighten the fuel fill hose clamp (1) at the fuel tank.
Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
- Lower the vehicle.
- Add fuel and install the fuel fill cap.
- Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (L26) .
- Inspect the fuel system for leaks by performing the following steps:
- Turn ON the ignition for 2 seconds.
- Turn OFF the ignition for 10 seconds.
- Turn ON the ignition.
- Inspect for fuel leaks.
- Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
NOTE:
Refer to Fastener Notice
.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.