General Motors Corp.: Service Brakes, Hydraulic
General Motors Corp. reported this defect to federal regulators on Feb 8, 2005 and put the number of vehicles at risk at 77,411. The repair is free for as long as the recall stands.
The defect
CERTAIN TRUCKS, SPORT UTILITY VEHICLES, AND VANS EQUIPPED WITH BOSCH HYDRO-BOOST BRAKE ASSEMBLIES, THE HYDRAULIC BRAKE BOOSTER PRESSURE ACCUMULATOR MAY CRACK AND SEPARATE FROM THE HYDRO-BOOST ASSEMBLY DURING NORMAL OPERATING CONDITIONS.
The risk
IF A SEPARATION OCCURRED AND THE HOOD OF THE VEHICLE WERE OPEN, FRAGMENTS FROM THE ACCUMULATOR COULD CAUSE INJURY TO PEOPLE IN THE IMMEDIATE AREA. THE PRESENCE OF THIS CRACK OR FRACTURED SURFACE COULD ALLOW THE HYDRAULIC FLUID TO LEAK FROM THE ACCUMULATOR CIRCUIT OF THE BOOSTER ASSEMBLY. THE LOSS OF FLUID WOULD CAUSE INCREASED STEERING AND BRAKING EFFORT AND A CRASH MAY OCCUR WITHOUT PRIOR WARNING.
The remedy
DEALERS WILL TEST THE HYDRO-BOOST ASSEMBLY FOR FUNCTIONAL OPERATION OF THE TWO-FUNCTION VALVE. IF THE HYDRO-BOOST ASSEMBLY FAILS THE TEST, DEALERS WILL REPLACE THE ASSEMBLY FREE OF CHARGE. THE RECALL BEGAN ON MARCH 23, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC TRUCKS AT 1-866-996-9463 AND HUMMER AT 1-800-732-5493.
20 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2005 Chevrolet Avalanche | 71 | 3 | 0 | 2 |
| 2005 Chevrolet Express | 23 | 9 | 1 | 0 |
| 2005 Chevrolet Kodiak | 3 | 3 | 0 | 0 |
| 2005 Chevrolet Silverado | 316 | 14 | 7 | 14 |
| 2005 Chevrolet Suburban | 129 | 7 | 1 | 4 |
| 2005 GMC Savana | 13 | 5 | 0 | 1 |
| 2005 GMC Sierra | 117 | 11 | 2 | 3 |
| 2005 GMC Topkick | 1 | 3 | 0 | 0 |
| 2005 GMC Yukon XL | 42 | 6 | 0 | 3 |
| 2005 Hummer H2 | 79 | 3 | 1 | 3 |
| 2004 Chevrolet Avalanche | 165 | 6 | 1 | 6 |
| 2004 Chevrolet Express | 21 | 7 | 2 | 1 |
| 2004 Chevrolet Kodiak | 5 | 5 | 0 | 1 |
| 2004 Chevrolet Silverado | 622 | 15 | 10 | 56 |
| 2004 Chevrolet Suburban | 204 | 6 | 6 | 12 |
| 2004 GMC Savana | 12 | 7 | 1 | 2 |
| 2004 GMC Sierra | 188 | 10 | 5 | 11 |
| 2004 GMC Topkick | 5 | 5 | 0 | 0 |
| 2004 GMC Yukon XL | 87 | 4 | 2 | 5 |
| 2004 Hummer H2 | 59 | 4 | 1 | 6 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 05V043000.
Full record for the 2005 Chevrolet Avalanche → · Recalls carrying a do-not-drive advisory → · Where this data comes from →