OEM 2007 GMC Sierra 1500 Harmonic Balancer

2007 GMC Sierra 1500 Harmonic Balancer Parts and Q&A

• Q: How to replace the harmonic balancer on 2007 GMC Sierra 1500?

  A: Start the crankshaft balancer replacement by taking off the Drive Belt together with the cooling fan. When using a crankshaft balancer removal tool install a bolt shorter than the crankshaft balancer bolt which has matching threads inside the crankshaft before proceeding. Start by removing the crankshaft balancer bolt with its washer then proceed to take off both crankshaft pulley bolts and pulley. Use the crankshaft balancer remover and installer (J 23523-F) to take off and position again the crankshaft balancer. Apply j 23523-f plate and its bolts to the crankshaft balancer and secure the bolts at 25 n.m (18 lb ft) torque before inserting j 23523-f forcing screw into the plate to rotate the balancer off with clockwise torque. Take note of the balancer weights' position and length before cleaning and inspection of the balancer when needed. To reuse the front cover seal, apply a minimal amount of grease on the sealing surface before installing while keeping the balancer weight(s) in their correct positions. Put adhesive into the keyway of the crankshaft balancer before aligning it with the key to mount it on the crankshaft. Press the balancer onto the crankshaft by using the j 23523-f while you install the j 23523-f plate and its bolts with a torque setting of 25 n.m (18 lb ft). The threaded assembly of j 23523-f forcing screw, bearing, washer, and nut needs clockwise rotation until the balancer hub contacts the crankshaft position sensor reluctor ring. Put in the crankshaft pulley followed by its bolts and complete their installation by stowing them with 58 n.m (43 lb ft) torque values. Direction the crown of the crankshaft balancer washer so it points away from the engine before installing the washer on top of the bolt then torquing it to 95 n.m (70 lb ft). Reposition the cooling fan and Drive Belt in its proper place.