Nord-lock Suspension Locking Washers Nord-Lock Suspension Locking Washers – CTS-V Front Lower Control Arm Fix (Set of 4)Secure Your Suspension. Protect Your Subframe. A known weak point in the Cadillac CTS-V front suspension is the tendency for the lower control arm bolts to loosen... MSRP: Was: Now: $29.99 Add to Cart