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The Hummer Knowledge Base
AM General Corporation Models: AM General Hummer
Description of Defect: Under high ambient temperatures (greater than 95 degrees Fahrenheit) and with the fuel tank level between 1/4 and 1/2 full, the fuel tank internal pressure can increase and cause the tank to expand. Tank expansion causes an interference between the fuel tank protective shield and the propeller shaft. This results in a hole in the fuel tank at the point of shield-to-shaft contact. Consequence of Defect: This hole can result in a fuel leak, and if an ignition source is present, could result in a fire. Corrective Action: Dealers will install a supplemental fuel tank venting system on these vehicles. Note: Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time, should contact AM General at 1-800-638-8303. |