2004 Chevrolet Avalanche
NHTSA Defect Investigations
The Office of Defects Investigations (ODI) is an office within the NHTSA which investigates serious safety problems in the design, construction or performance of vehicles. The NHTSA is authorized to order manufacturers to recall and repair vehicles, if the ODI finds a safety issue. NHTSA investigations for the 2004 Chevrolet Avalanche, both ongoing and closed, are listed below:
INVESTIGATION: HYDRAULIC PUMP FAILRES
NHTSA Engineering Analysis #EA04012
Component(s): Service Brakes, Hydraulic:Power Assist
Steering:Hydraulic Power Assist System
Summary: GM is conducting a recall on all subject vehicles build between May 1999 and October 14, 1999.significant changes were incorporated into production in early October 1999, and vehicles built after that date have lower warranty failure rates.the complaint and warranty data appear to support the effectiveness of these changes. GM made additional changes in November 1999, February 2000, May 2001, and February 2004.ODI will continue to monitor this problem and will take further action, if warranted, in the future.for further technical details see the attached engineering analysis report.