There is a bulletin out for this concern
#PIT5098A: Clunk Noise Front Suspension Over Bumps From Stabilizer Link - (Jun 17, 2011)
Document ID: 2677130
Clunk Noise Front Suspension Over Bumps From Stabilizer Link
Models: 2010 - 2011 Chevrolet Equinox
2010 - 2011 GMC Terrain
Condition/Concern:
Customer may comment on a clunk noise heard from the front suspension while driving over bumps or up an incline. During diagnostics the technician may find that one of the front stabilizer bar that is over to the left or stabilizer end link is broken. After replacing the link a short time later the customer returns to the dealer for the same concern. The technician may find the link is broken again. This may be due to the stabilizer ring location is incorrect or the ring has come loose on stabilizer bar. If this ring is in the incorrect location or found loose the bar can move to the left or right and cause a side load to the end link causing a break.
Recommendation/Instructions:
Inspect the two stabilizer bar location rings that keep the bar centered. If this ring is not in the correct location on the bar or if it became cracked or loose on the stabilizer bar and has shifted. Replaced the stabilizer bar and the broken link.
#PIT5098A: Clunk Noise Front Suspension Over Bumps From Stabilizer Link - (Jun 17, 2011)
Document ID: 2677130
Clunk Noise Front Suspension Over Bumps From Stabilizer Link
Models: 2010 - 2011 Chevrolet Equinox
2010 - 2011 GMC Terrain
Condition/Concern:
Customer may comment on a clunk noise heard from the front suspension while driving over bumps or up an incline. During diagnostics the technician may find that one of the front stabilizer bar that is over to the left or stabilizer end link is broken. After replacing the link a short time later the customer returns to the dealer for the same concern. The technician may find the link is broken again. This may be due to the stabilizer ring location is incorrect or the ring has come loose on stabilizer bar. If this ring is in the incorrect location or found loose the bar can move to the left or right and cause a side load to the end link causing a break.
Recommendation/Instructions:
Inspect the two stabilizer bar location rings that keep the bar centered. If this ring is not in the correct location on the bar or if it became cracked or loose on the stabilizer bar and has shifted. Replaced the stabilizer bar and the broken link.