OEM GMC C3500 Coil Springs

GMC C3500 Coil Springs Parts and Q&A

• Leaf Spring, Front
  15638995
  Q: How to Service and Repair Coil Springs on GMC C3500?

  A:

  A coil spring repair service begins with hoisting the vehicle to allow Control Arms to drop while free-hanging. First remove the tire with wheel assembly and then uninstall the shock absorber. Use the coil spring remover and installer (J 23028-01) to hold the lower Control Arm while it's attached to a suitable jack's end. The lower Control Arm pivot bolt tension must be relieved by raising the jack while secure the spring with a chain through both Control Arm and spring. Following this step, remove the stabilizer shaft and pivot bolt from the lower Control Arm. Start by ejecting the pivot bolts and nuts in sequence with the rear pivot bolt preceding other removal steps. Drop the Control Arm after lowering the jack and extract the chain when spring compression releases from the coil spring. Pull out the coil spring along with the insulator yet place the coil spring correctly to extract it easily. Installation requires placement of the coil spring and insulator onto the lower Control Arm while maintaining lowest tape position at the bottom and gripper notch at the top position with one inspection drain hole completely covered by the spring end and one hole remaining open. Fasten the spring by running a chain between the arm and spring before placing the spring insulator above the connection point. Use the coil spring remover and installer (J 23028-01) to support the Control Arm while installing the lower Control Arm on the frame by applying it with a pry bar. Fuse pivot bolts with new nuts while starting by tightening the front bolt followed by the rear one before ensuring the nuts reach 137 nm (101 ft. Lbs.). The process ends with stabilizer shaft installation followed by the shock absorber and the tire and wheel assembly before lowering the vehicle while performing a front wheel alignment check.