One problem related to steering pinion shaft has been reported for the 2008 Buick Enclave. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Buick Enclave based on all problems reported for the 2008 Enclave.
The steering has been an ongoing event since the second year of having the model. I would lose control of the vehicle when tuning left. It would have a mind of its own and not turn. I have run off the road and went into several ditches not being able to turn (tech service date 6/20/12 rack and pinion binding causing stiffness in steering--replaced steering gear and flushed system). We almost had a head on collision when I turned it in again with the same issue demanding something be done. (5/10/13 correction-replace leaking steering gear and failed p/s pump, fill system, bleed sys and verify operation). Difficulty steering and loud popping noise while turning left (service date 4/18/14- found internal leak form power steering rack -replaced rack and bleed system and aligned vehicle. Drove out of the the dealership and noticed a/c not working and same noise coming from the front while turning left. Took it back in (5/5/14-found left front axle shaft to be popping needs to replace at owners expense. The dealership had the vehicle for 20+ days and did not fix. Airbag warning light illuminated so I took the vehicle into the dealer (6/29/10--poor connection at sir harness--diagnosed and repaired. Received a recall notice in the mail-took vehicle into the dealer (4/18/14--correction completed). Airbag warning light illuminated again. Took vehicle to the dealership (5/5/14-intermittent short in passenger presence module, checked an rechecked -- corrections needs from passenger presence module at customers expense I was called to picked vehicle up as is after 20+ days. Dealership would not fix.