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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2001EXPRESS 1 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSFUEL TANK PRESSURE SENSORSERVICE AND REPAIRBI-FUEL/ALTERNATIVE FUELS
2001 Chevrolet Express 1 Ton Van V8-5.7L VIN R
Bi-Fuel/Alternative Fuels
2001 Chevrolet Express 1 Ton Van V8-5.7L VIN RSECTION Bi-Fuel/Alternative Fuels
TOOLS REQUIRED
J 41416 Ultrasonic Leak Detector
REMOVAL PROCEDURE
CAUTION:
^ Refer to Compressed Natural Gas (CNG) Flammability Caution in Service Precautions.
^ Refer to Compressed Natural Gas (CNG) Fuel Pressure Relief Caution in Service Precautions.
1. Relieve the CNG fuel system pressure. Refer to the Fuel Pressure Relief Procedure.
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
2. Disconnect the negative battery cable.
3. Remove the CNG fuel tank shield. Refer to Fuel Tank Shield Replacement.
4. Disconnect the fuel tank pressure (FTP) sensor electrical connector (2).
5. Remove the FTP sensor (1) from the tank valve. Discard the O-ring.
INSTALLATION PROCEDURE
CAUTION: Refer to Compressed Natural Gas (CNG) O-Ring Caution in Service Precautions.
NOTE: Refer to Fastener Notice in Service Precautions.
IMPORTANT: Lubricate the new O-ring trace seal with petroleum jelly or equivalent before installation.
1. Install the FTP sensor (1) in the tank valve using a new O-ring.
Tighten
Tighten the FTP sensor to 37 N.m (27 lb ft).
2. Connect the FTP sensor electrical connector (2).
3. Connect the negative battery cable.
4. Start the vehicle and use the J 41416 in order to inspect for CNG fuel leaks at each serviced fitting.
5. Install the CNG fuel tank shield.
J 41416 Ultrasonic Leak Detector
REMOVAL PROCEDURE
CAUTION:
^ Refer to Compressed Natural Gas (CNG) Flammability Caution in Service Precautions.
^ Refer to Compressed Natural Gas (CNG) Fuel Pressure Relief Caution in Service Precautions.
1. Relieve the CNG fuel system pressure. Refer to the Fuel Pressure Relief Procedure.
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
2. Disconnect the negative battery cable.
3. Remove the CNG fuel tank shield. Refer to Fuel Tank Shield Replacement.
4. Disconnect the fuel tank pressure (FTP) sensor electrical connector (2).
5. Remove the FTP sensor (1) from the tank valve. Discard the O-ring.
INSTALLATION PROCEDURE
CAUTION: Refer to Compressed Natural Gas (CNG) O-Ring Caution in Service Precautions.
NOTE: Refer to Fastener Notice in Service Precautions.
IMPORTANT: Lubricate the new O-ring trace seal with petroleum jelly or equivalent before installation.
1. Install the FTP sensor (1) in the tank valve using a new O-ring.
Tighten
Tighten the FTP sensor to 37 N.m (27 lb ft).
2. Connect the FTP sensor electrical connector (2).
3. Connect the negative battery cable.
4. Start the vehicle and use the J 41416 in order to inspect for CNG fuel leaks at each serviced fitting.
5. Install the CNG fuel tank shield.
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.