Investigations
| NHTSA ID | Manufacturer | Date open | Date close | Subject | Recall campaign | |
|---|---|---|---|---|---|---|
| STEERING - HYDRAULIC POWER ASSIST - PUMP | ||||||
| PE04004 | GENERAL MOTORS CORP. | 01/08/2004 | 04/30/2004 | HYDRAULIC PUMP SHAFT FAILURES | ||
| The preliminary evaulation is being upgraded.during the ea odi will limitits 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 hasexpanded the scope of the ea to include model years2003 and 2004, asduring 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 thisisa 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. | ||||||
| STEERING - HYDRAULIC POWER ASSIST SYSTEM | ||||||
| EA04012 | GENERAL MOTORS CORP. | 04/30/2004 | 02/28/2005 | HYDRAULIC PUMP FAILRES | 05V005000 | |
| 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. | ||||||
| PE04004 | GENERAL MOTORS CORP. | 01/08/2004 | 04/30/2004 | HYDRAULIC PUMP SHAFT FAILURES | ||
| The preliminary evaulation is being upgraded.during the ea odi will limitits 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 hasexpanded the scope of the ea to include model years2003 and 2004, asduring 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 thisisa 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. | ||||||
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| STEERING - GEAR BOX - SHAFT SECTOR | |||
| 10/08/2003 | 15000 | 2 | 08/18/2001 |
| While pulling into the driveway brakes and steering simultaneously failed. emergency brake had to be used to stop the truck. this failure was caused by the steering shaft breaking. dealership replaced steering shaft but the problem recurred within the next 15,000 miles while driving at 25-35 mph. *ak | |||
| STEERING - HYDRAULIC POWER ASSIST - PUMP | |||
| 07/03/2002 | |||
| While backing up power steering pump broke, unable to steer or brake.*ak | |||
| STEERING - HYDRAULIC POWER ASSIST SYSTEM | |||
| 09/27/2000 | 1 | 01/21/2000 | |
| Consumer was traveling about 50mph on highway and was approaching a dip in the road, went across the dip, and immediately heard a noise coming from left wheel. vehicle felt like left side went down.he turned steering wheel right, and vehicle didn't turn. vehicle just locked down in position. went into a water ditch, hit enbankment, and went up to the enbankment. wheel lugs, bolt: nuts came off. there were no injuries. *ak tie rod on driverside broke. *yh | |||
| STEERING - LINKAGES - TIE ROD ASSEMBLY | |||
| 1 | 02/17/2000 | ||
| While driving 5 mph the right front of the vehicle collasped. the tie rod and ball joint failed. *ak *jb | |||
| 09/27/2000 | 1 | 01/21/2000 | |
| Consumer was traveling about 50mph on highway and was approaching a dip in the road, went across the dip, and immediately heard a noise coming from left wheel. vehicle felt like left side went down.he turned steering wheel right, and vehicle didn't turn. vehicle just locked down in position. went into a water ditch, hit enbankment, and went up to the enbankment. wheel lugs, bolt: nuts came off. there were no injuries. *ak tie rod on driverside broke. *yh | |||