GMW GMW8518: Issue 4; English; GMW RESTRICTED/CONFIDENTIAL STANDARD – To purchase call 1-800-854-7179 USA/Canada or 303-397- 7956 Worldwide
SDO: GMW: General Motors Company
DOD Adopted ANSI Approved Approved
Note: Nothing in this standard supercedes applicable laws and regulations.
Note: In the event of conflict between the English and domestic language, the English language shall take precedence.
Purpose. To implement a worldwide uniform process for evaluating the squeak and rattle (S&R) performance of a complete vehicle. This includes the detection, the evaluation (by subjective rating of S&R complaints), as well as some root source analysis. Furthermore, the documentation of S&R complaints and the results of the root source analysis are described for initiation of problem resolution. This procedure consists of three parts: A quasi-static evaluation, a dynamic road simulation evaluation (where available) and a dynamic on-road evaluation.
This procedure also provides detailed instructions for temperature evaluations using environmental road simulator.
Foreword. This procedure will guide an evaluator through full vehicle squeak and rattle evaluations. Squeak and rattle performance shall be evaluated according to the GMW14264 subjective rating scale.
Applicability. For all passenger cars, light commercial vehicles and medium duty trucks.
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