scope:

Note: Nothing in the specification supersedes applicable laws and regulations unless specific exemption has been obtained.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose.

To provide a means performing Squeak & Rattle (S&R) diagnostics or subjectively evaluating subassemblies, subsystems or components for squeak and rattle performance relative to vibration degradation over normal life expectancy.

This procedure is intended for Development work only and not for Validation.

Forward.

This degradation test is based on MIL Standard 810, which states the total test time may be exponentially reduced relative to a linear increase in test load. The relationship between test time and load is governed by the equation explained in Appendix A.

This test is limited to degrading a subassembly, subsystem or component due to random simulated road vibration inputs only. It does not address environmental effects, static load effects or customer actuated inputs.

Please refer to the Squeak and Rattle Website for the "Complete Multi-axis Vibration Tables", to find the vibration test profiles.

All evaluations called for in this procedure are documented in GMW7293TP and GMN7000 and should be performed in accord with GMW7293TP and GMN7000.

Applicability.

This procedure is applicable to any automotive subassembly, subsystem or component where squeaks and rattles are a concern and the vibration environment can be simulated.

Definitions.

Information wholly contained in GMW7293TP and GMN7000.