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.
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HOMESERVICE MANUALSGMC1998ENVOY 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISBODY AND FRAMEBODY CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA LIST
1998 GMC Envoy 2WD V6-4.3L VIN W
Scan Tool Data List
1998 GMC Envoy 2WD V6-4.3L VIN WSECTION Scan Tool Data List
Use the typical scan tool data values for comparison after you have completed the following steps:
^ Performed the BCM diagnostic system check
^ Verified that the on-board diagnostics function correctly without displaying any DTCs
The typical scan tool data values are an average of displayed values that are recorded from normally operating vehicles. The typical scan tool data values are intended to represent what a normally functioning system would display. The values you get may vary due to a low battery charge or other reasons. The values should be very close.
Use only the parameters that the tables list for diagnosis. If a scan tool reads another parameter, do not use the values in diagnosis. For more details on the scan tool typical data values and on the use of the scan tool for the diagnosis of BCM inputs, refer to the applicable diagnosis table. If all of the values are within the range that the table illustrates, refer to Diagnostic Aids in the applicable diagnostic trouble code table and the Symptom Subsection References Table.
^ Performed the BCM diagnostic system check
^ Verified that the on-board diagnostics function correctly without displaying any DTCs
The typical scan tool data values are an average of displayed values that are recorded from normally operating vehicles. The typical scan tool data values are intended to represent what a normally functioning system would display. The values you get may vary due to a low battery charge or other reasons. The values should be very close.
Use only the parameters that the tables list for diagnosis. If a scan tool reads another parameter, do not use the values in diagnosis. For more details on the scan tool typical data values and on the use of the scan tool for the diagnosis of BCM inputs, refer to the applicable diagnosis table. If all of the values are within the range that the table illustrates, refer to Diagnostic Aids in the applicable diagnostic trouble code table and the Symptom Subsection References Table.
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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.