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Search Results   Report Date : February 9, 2010 at 11:17 PM NHTSA Action Number : PE04004 N/A NHTSA Action Number : PE04004 NHTSA Recall Campaign Number : N/A Make / Models :         Model/Build Years:          CHEVROLET / 2500 HD     2001      CHEVROLET / C/K 3500     2000-2001      CHEVROLET / C2500     2000-2002      CHEVROLET / C3500     2000-2002      CHEVROLET / C3500HD     2000-2001      CHEVROLET / CK 2500     2000-2002      CHEVROLET / K2500     2000-2002      CHEVROLET / K3500     2000-2002      CHEVROLET / W3500     2000-2001      GMC / 2500 HD     2001-2002      GMC / 3500     2000-2002      GMC / C/K 3500     2000-2001      GMC / C2500     2000-2002      GMC / C3500     2000-2002      GMC / C3500HD     2000      GMC / K2500     2000-2002      GMC / K2500 HD     2001      GMC / K3500     2000-2002      GMC / K3500 HD     2001      GMC / W3500     2000-2001 Manufacturer : GENERAL MOTORS CORP. Component : SERVICE BRAKES, HYDRAULIC SERVICE BRAKES, HYDRAULIC:POWER ASSIST SERVICE BRAKES, HYDRAULIC:POWER ASSIST:HYDRAULIC STEERING:HYDRAULIC POWER ASSIST SYSTEM STEERING:HYDRAULIC POWER ASSIST:PUMP Date Investigation Opened : January 8, 2004 Date Investigation Closed : April 30, 2004 Summary: THE PRELIMINARY EVAULATION IS BEING UPGRADED. DURING THE EA ODI WILL LIMIT ITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS. VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED. ODI HAS EXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS 2003 AND 2004, AS DURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004. THEREFORE, ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS. ODI'S IS CONCERNED BECAUSE THIS IS A SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME. THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS. DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK. ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS. Check to Request Research. Submit below.