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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> DTC P0730: Gear Ratio >> Test Description

Test Description

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

  1. 3. This step tests the indicated range signal to the actual selected range. A faulty TFP manual valve position switch could set DTC P1810.
  2. 4. This step tests for proper ratios in each commanded gear state.
Fig 1: DTC P0730 (1 Of 2)
G02424359Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0730 (2 Of 2)
G02424360Courtesy of GENERAL MOTORS CORP.
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