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March 29, 1999

NHTSA 20-99
Contact: Tim Hurd
Tel. No. (202) 366-9550

AM General Corporation

Models: AM General Hummer Year: 1999
Number Involved: 153
Dates of Manufacture: October 1998 - February 1999
Defect: On certain sport utility vehicles, the nuts used to attach the master cylinder to the hydroboost bolts were of the metric type rather than the required SAE type. A loose master cylinder condition can occur, causing longer than normal brake pedal travel during brake pedal applications.

Remedy: Dealers will replace the master cylinder-to-hydroboost mounting bolts and nuts. Owner notification was to begin during April 1999. Owners who do not receive the free remedy within a reasonable time should contact AM General at 1-734-523-8000.

[NHTSA Recall No. 99V059/AM General Recall No. AMG-R9901]