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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 361 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test >> Notes

Control Solenoid Valve and Transmission Control Module Assembly Output Shaft Speed Input Test: Notes

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools 

J 38522  Variable Signal Generator

For equivalent regional tools, refer to Special Tools .

Fig 1: Special Tool J 38522 - Variable Signal Generator
GM1868074Courtesy of GENERAL MOTORS CORP.

The purpose of this test is to provide a simulated output speed sensor signal to the control solenoid valve assembly.