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Test Description

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 3:  This step tests ignition voltage.
  2. 5:  This step tests for turbine speed not remaining at zero in third range.
DTC P0733

Step Action Value Yes No
Schematic Reference: Automatic Transmission Controls Schematics
1 Did you perform the Diagnostic System Check - Automatic Transmission? - Go to Step 2  Go to Diagnostic System Check - Automatic Transmission
2 Measure the transmission fluid level. Refer to Transmission Fluid Checking Procedure .
Is the transmission fluid level correct?		 - Go to Step 3  Go to Transmission Fluid Checking Procedure
3 
  1. Install the scan tool.
  2. Turn ON the ignition, with the engine OFF.
    3. IMPORTANT: Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records for reference. The Clear Info function will erase the data.
  3. Record the DTC Freeze Frame and Failure Records.
  4. Clear the DTC.
  5. Using the scan tool, measure ignition voltage.
Is the voltage within the specified range?		 9-18 V Go to Step 4  Go to DTC P0562  for low voltage or DTC P0563  for high voltage
4
  1. Drive the vehicle under normal operating conditions.
  2. Using the scan tool, monitor engine, turbine and output speed readings.
Is speed sensor data erratic?		 - Go to the appropriate speed sensor DTC Go to Step 5 
5 
NOTE: Refer to Transmission Stall Test Notice in Cautions and Notices.
Conduct a clutch test for third range. Refer to Clutch Test .Did turbine speed remain at zero?		 - Go to Diagnostic Aids Go to Step 6 
6
  1. Remove the transmission oil pan. Refer to Automatic Transmission Fluid/Filter Replacement .
  2. Inspect for contaminated fluid and excessive material in the pan.
Is the fluid contaminated or excessive material found in the pan?		 - Go to Step 7  Go to Step 8 
7 Remove the transmission for overhaul or replacement. Refer to Transmission Replacement (With 6.6L Engine) or Transmission Replacement (With 8.1L (L18) Engine) .
Did you complete the replacement?		 - Go to Step 10  -
8 Inspect for a stuck or sticking trim valve. Refer to Control Valve Body Cleaning and Inspection .
Did you find and correct a condition?		 - Go to Step 10  Go to Step 9 
9 Replace A solenoid. Refer to Control Valve Solenoid Replacement (Solenoid A, B) or Control Valve Solenoid Replacement (Solenoid C, D, E, F, G) .
Did you complete the replacement?		 - Go to Step 10  -
10 Perform the following procedure in order to verify the repair:
  1. Clear the DTC.
  2. Start the engine.
  3. Using the scan tool, operate the vehicle under normal operating conditions.
  4. Select Specific DTC.
  5. Enter DTC P0733.

Has the test run and passed?		 - System OK Go to Step 1 
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