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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> Tow/Haul Switch/Indicator Always On or Inoperative >> Test Description

Test Description

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The numbers below refer to the step numbers on the diagnostic table.

  1. 2. This step tests for a faulty tow/haul switch.
  2. 3. This step tests for voltage input from the BCM to the tow/haul switch.
  3. 6. This step tests for ground integrity.
Fig 1: Tow/Haul Switch/Indicator Always On Or Inoperative
G02424405Courtesy of GENERAL MOTORS CORP.
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