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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Avalanche - 4WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Drive Motor Battery 300-Volt Positive and Negative Cable Replacement

Object Number: 1971857 Size: MF

Callout

Component Name

Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.

The High Voltage Disabling procedure will perform the following tasks:

   • Identify how to disable high voltage.
   • Identify how to test for the presence of high voltage.
   • Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.

Preliminary Procedures

  1. Disable the high voltage at both the drive motor generator battery assembly and the drive motor generator control module assembly. Refer to High Voltage Disabling.
  2. Remove the right front fender bracket. Refer to Front Fender Rear Upper Bracket Replacement.
  3. Remove the control module sight shield. Refer to Drive Motor Generator Control Module Sight Shield Replacement.
  4. Remove the right front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left Side.
  5. Remove the electric power steering control module. Refer to Electronic Power Steering Motor Control Module Replacement.
  6. Remove the rear muffler insulator and 2 catalytic converter bolts. Refer to Exhaust Muffler Replacement.
  7. Remove both resonator insulators. Refer to Resonator Replacement.

1

Drive Motor Battery 300 Volt Negative Cable Terminal Fastener (Qty: 3)

Caution: Refer to Fastener Caution in the Preface section.

Tighten
9 N·m (80 lb in)

2

Drive Motor Battery 300 Volt Positive and Negative Cable

Procedure

Remove terminals from studs.

3

300 Volt Positive and Negative Cable Front Elbow Hinge Panel (Qty: 3)

Tip
Remove and replace plastic tie straps. Open all panels on cable front elbow.

4

300V Positive and Negative Cable Retainer

5

300V Positive and Negative Cable Front Elbow

6

300V Positive and Negative Cable Nut (Qty: 5)

Tighten
10 N·m (89 lb in)

7

Drive Motor Battery 300 Volt Cable Floor Grommet Nut (Qty: 2)

Tighten
9 N·m (80 lb in)

8

Drive Motor Battery 300 Volt Positive and Negative Cable

Procedure

  1. Push the drive motor battery 300 volt positive and negative cable through the floor grommet.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  3. Pull cable rearward to remove cable from floor.
  4. Push cable forward of the rear cross member.
  5. Pull the cable out from under the rear cross member.

9

Cable Gasket

Procedure

After the cable has been replaced and the re-assembly of the drive motor generator battery, enable the HV system. Refer to High Voltage Enabling.

Tip
New gasket must be used.