NHTSA recall 99V220000
Service Brakes, Hydraulic · General Motors, LLC
Details
What's wrong: These vehicles may have had the right-hand antilock brake system (ABS) module feed pipe and/or brake crossover pipe tube nuts tightened without seating the pipe-flared-ends enough to withstand normal assembly and vehicle inputs without partially unseating. This does not comply with requirements of fmvss no. 105, "hydraulic service brake normal, emergency, and park braking performance."
Why it matters: If this occurred, the seating seal could be broken during vehicle assembly, or from early road inputs or brake fluid cycling, and a leak could occur increasing the brake stopping distance.
The fix: Dealers will inspect the brake pipe union for signs of brake fluid, and if necessary, install a new brake pipe union.
Affected vehicles on MotorDeets
All model years NHTSA lists
2000 Chevrolet Blazer, 2000 Chevrolet S10, 2000 Gmc Jimmy, 2000 Gmc Sonoma.
Recalls can cover only some VINs. Check yours on NHTSA's official recall page for 99V220000.
Source: NHTSA recall records. Summary shortened; the official notice has the full text.