Buy 2018 Gmc Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T RWD Base Standard Cab Pickup Fleetside Coil Suspension, Right, Left - OEM Gmc Part # 20888729 (15251312, 20846823)

Insulator. Spring. Seat.
Coil Spring Insulator. Spare. Coil.

Coil Spring Insulator

Fits Captiva Sport, Equinox, Terrain, Torrent, Vue

2007-09. Captiva Sport; Upper. Equinox, Terrain; Upper.
Suspension Coil Spring - Repair or Replace
Your coil springs are not especially prone to failure, but if they have been cut, clamped, or heated to have the vehicle lowered, your 2018 GMC Sierra 2500 HD might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local GMC service department to have your suspension system evaluated.