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 MANUALSGMC1998ENVOY 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONSINPUT 1IGNITION POWER MODE
1998 GMC Envoy 2WD V6-4.3L VIN W
Ignition Power Mode
1998 GMC Envoy 2WD V6-4.3L VIN WSECTION Ignition Power Mode
Input 1 (Part 1 Of 2):
Input 1 (Part 2 Of 2):
Range: OFF/ RUN/ CRANK/ UNKNOWN
The BCM uses the ignition power mode data in order to determine the position of the ignition switch.
OFF is displayed when the ignition switch is in the OFF or the ACCESSORY positions.
RUN is displayed when the switch is in the RUN position.
CRANK is displayed when the ignition switch is in the CRANK position.
UNKNOWN is displayed when the BCM cannot determine the position of the ignition switch (i.e. between the OFF and the RUN position).
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.