Skip to content
FaultCrate
日本語Open preview: everything readable

This is an open preview: every record can be read without an account. The details of the plans are in preparation.

GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

Change vehicle →
Clear the search
1 conditions added

The vehicle (where a record says)

A record is under an engine, a drive or a series only where it says so: the characters of the vehicle identification number filed with a complaint, its text, or what its document says it applies to. A record that does not say is kept as "not stated". The filed numbers and the documents do not tell 4WD from AWD.

Common on this vehicle:Warning light

Record by record

1 records state a cause or a remedy. Each record is shown as short labels in the order fault → finding the cause → correction. Press a label to narrow to the records that state it.

Read the records one by one (1)

Known issuesNo response when the OnStar button is pressed (DTC B2476): button assembly test values1

  1. Manufacturer communication2000 GMC YUKON ・ 2000-09-01

    OnStar button assembly test: corrected values for step 7 of table DT3

    1. 1Fault

      • On 1998-2000 OnStar equipped vehicles there may be no response when the OnStar button is pressed.
      • The OnStar VS-3B buttons may not operate and the telltale LED may not flash after the OnStar Center button or Emergency button is pressed; a DTC B2476 may also be present.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. With the ignition on, check for 7-10 volts between pin E6 and E1; if there is no voltage and the wire at the terminal is not shorted to ground, replace the VIU.
      2. Back probe the blue VIU connector between terminals E4 and E1: there should be no voltage with the system on and no buttons pressed.
      3. Press and hold the Call Answer/End button: the voltage should be 0.33 volts +/- 10%.
      4. Press and hold the OnStar Services button: the voltage should be 1.3 volts +/- 10%.
      5. Press and hold the Emergency button: the voltage should be 2.2 volts +/- 10%.

    3. 3Correction

      Repair

      • If the readings do not agree with the specified values, replace the button assembly; if it is a mirror mounted button assembly, replace the mirror.

      Caution

      • In these cases use OnStar Diagnostic Table DT3 (OnStar Button Assembly Test), but the values given in step 7 of that test are incorrect.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The affected models include the 2000 GMC Yukon 2WD & 4WD and Yukon XL 2WD & 4WD.
    • Condition：On 1998-2000 OnStar equipped vehicles there may be no response when the OnStar button is pressed.
    • Condition：The OnStar VS-3B buttons may not operate and the telltale LED may not flash after the OnStar Center button or Emergency button is pressed; a DTC B2476 may also be present.
    • Caution：In these cases use OnStar Diagnostic Table DT3 (OnStar Button Assembly Test), but the values given in step 7 of that test are incorrect.
    • Confirm：With the ignition on, check for 7-10 volts between pin E6 and E1; if there is no voltage and the wire at the terminal is not shorted to ground, replace the VIU.
    • Confirm：Back probe the blue VIU connector between terminals E4 and E1: there should be no voltage with the system on and no buttons pressed.
    • Confirm：Press and hold the Call Answer/End button: the voltage should be 0.33 volts +/- 10%.
    • Confirm：Press and hold the OnStar Services button: the voltage should be 1.3 volts +/- 10%.
    • Confirm：Press and hold the Emergency button: the voltage should be 2.2 volts +/- 10%.
    • Repair：If the readings do not agree with the specified values, replace the button assembly; if it is a mirror mounted button assembly, replace the mirror.

    Open this issue of GM TechLink ↗ The points above are read from an article of TechLink, GM’s monthly publication for dealership technicians. The article itself is not reproduced here.

    Remedy
    OnStar Button Test 2000 GMC Yukon 2WD & 4WD and Yukon XL 2WD & 4WD T h e re may not be a response when the OnStar button is p ressed on 1998-2000 OnStar equipped vehicles. In addition, the OnStar VS-3B buttons may not operate and the telltale LED may not flash after the OnStar Center button or E m e rgency button is pressed. A DTC B2476 also may be pre- sent in the system. If any of these conditions are pre s e n t , refer to the OnStar Diagnostic Table DT3 (OnStar Button Assembly Test). However, the values given in step 7 of the test are incorre c t . 2. Check to ensure Voltage of 7- 10 Volts between Pin E6 and E1. If there is no voltage here and the wire at terminal E^ is not shorted to ground, Replace the VIU. 3. Back probe the blue VIU connector for Vo l t a g e between terminals E4 and E1. There should be no voltage when the system is On and no buttons are depre s s e d . 4. Press and hold the Call Answer/End button. The Voltage should be 0.33 volts +/- 10%. 5. Press and hold the OnStar Services button. The voltage should be 1.3 Volts +/- 10%. 7. Press and hold the Emergency button. The voltage should be 2.2 Volts +/- 10% If the readings do not agree with the specified values, the button assembly must be replaced. If this is a mirror mounted button assembly, the mirror must be re p l a c e d .