NHTSA recall 04V287000
Service Brakes, Hydraulic · General Motors, LLC
Details
What's wrong: Certain passenger vehicles were produced with lower than specified torque on both front brake caliper to steering knuckle attachment bolts. With improper torque, the clamp load at the joint may not be adequate to prevent movement between the caliper bracket and knuckle.
Why it matters: Depending on whether one or both bolts backs out or fractures, the result can be locking of the affected wheel during braking and an abrupt steering input in the direction of the locked wheel, reduced braking and noise from the affected wheel, or severing of a brake hose, increased brake pedal…
The fix: Dealers are to tighten both bolts to the specified torque. Owner notification began on June 28, 2004. Owners should contact Chevrolet 1-800-630-2438 or Pontiac 1-800-620-7668.
Affected vehicles on MotorDeets
All model years NHTSA lists
2004 Chevrolet Impala, 2004 Chevrolet Monte Carlo, 2004 Pontiac Grand Prix.
Recalls can cover only some VINs. Check yours on NHTSA's official recall page for 04V287000.
Source: NHTSA recall records. Summary shortened; the official notice has the full text.