GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 S10 Pickup - 4WD 🢒 Driveline/Axle 🢒 Transfer Case - NVG 136-NP4(One Speed Automatic) 🢒 Service Indicator Always On

Step

Action

Value(s)

Yes

No

1

Was the Transfer Case Diagnostic System Check performed?

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Go to Step 2

Go to Transfer Case Diagnostic System Check

2
  1. Scan tool installed.
  2. Turn the ignition ON, engine OFF.
  3. Use a scan tool in order to command the SERVICE AWD/4WD lamp OFF.

Does the lamp go off?

--

Go to Step 3

Go to Step 4

3

Replace the transfer case shift control module. Refer to Transfer Case Shift Control Module Replacement

Is the repair complete?

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Go to Transfer Case Diagnostic System Check

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4

Replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel.

Is the repair complete?

--

Go to Step 5

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5
    • Properly mount and reconnect all previously disconnected components.
    • Turn ignition ON, engine OFF,
    • Using the scan tool, clear all DTCs.

Is the action complete?

--

Go to Transfer Case Diagnostic System Check

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