
Service Information
2021 Chevrolet Tahoe - 2WD |
Suburban, Tahoe Service Manual (13889801) |
Document ID: 5214977
High Pressure Fuel Variable Reset
Diagnostic InstructionsDescriptionThis procedure resets the control module learned values of the component/system:G18 High Pressure Fuel Pump
When to Perform the ProcedureNote: Failure to perform this procedure may result in poor system performance, DTCs being set, or customer dissatisfaction.
Perform this procedure when the following component has been serviced:
- G18 High Pressure Fuel Pump—Replaced
- Q17 Fuel Injector—Replaced
- Q18 Fuel Pressure Regulator—Replaced
- Fuel Rail—Replaced
Conditions for Running the ProcedureIgnition=On
Reference InformationScan Tool Reference
Control Module References
With Scan Tool- Ignition » On / Vehicle » In Service Mode
- Select:Module Diagnostics
- Select:Engine Control Module
- Select:Configuration/Reset Functions
- Select:Reset Functions
- Select:High Pressure Fuel Variable Reset
Note: The scan tool does not display the learn/reset status.
- Follow the instructions on the scan tool.—The procedure will complete within 10 s
Repair InstructionsPerform the Diagnostic Repair Verification after completing the repair:Diagnostic Repair Verification