Tenneco Automotive Inc. (ticker: TEN, exchange: New York Stock Exchange) News Release

April 5, 2004


LAKE FOREST, ILLINOIS, APRIL 5, 2004 - Tenneco Automotive (NYSE: TEN) was named as a General Motors Supplier of the Year for its overall business performance in supplying GM. The company received the award during ceremonies in Prague, Czech Republic on April 3.

"Tenneco Automotive is representative of the type of company we want to grow with as we drive to be the best worldwide," said Bo Andersson, vice president, GM Worldwide Purchasing, Production Control & Logistics. "Tenneco Automotive has a balanced focus on performance and behavior that supports GM's priorities. They are a role model for all of our suppliers."

"We are very proud to receive this award, which recognizes our strong customer focus and dedication to excellence," said Mark P. Frissora, chairman and CEO, Tenneco Automotive. "Our team approach and global engineering and manufacturing capabilities support our commitment to delivering cost-effective solutions, world-class quality and flawless product launches."

The GM Supplier of the Year Award began as a global program in 1992. Award winners are selected by a global team of executives from purchasing, engineering, manufacturing and logistics who base their decision on supplier performance in quality, service, technology and price. This year, General Motors honored 77 suppliers for their excellence throughout 2003.

General Motors selected Tenneco Automotive as one of its top suppliers for the company's performance in supplying ride control components, primarily shock absorbers and struts. The company was recognized for delivering high quality products, responding to customer needs quickly and effectively, and generating cost efficiencies.

Tenneco Automotive is a $3.8 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 19,200 employees worldwide. Tenneco Automotive is one of the world's largest designers, manufacturers and marketers of emission control and ride control products and systems for the automotive original equipment market and the aftermarket. Tenneco Automotive markets its products principally under the Monroe®, Walker®, Gillet® and Clevite® Elastomer brand names. Among its products are Sensa-Trac® and Monroe Reflex® shocks and struts, Rancho® shock absorbers, Walker® Quiet-Flow® mufflers, Dynomax® performance exhaust products, and Clevite® Elastomer noise, vibration and harshness control components.

Tenneco Automotive, Media Relations
Jane Ostrander
(1) 847 482 5607

Tenneco Automotive, Investor Relations
Leslie Hunziker,