Two problems related to power steering pump have been reported for the 2012 Buick Enclave. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Buick Enclave based on all problems reported for the 2012 Enclave.
Power steering pump was replaced sept 2017 due to intermittent steering problems when making right had turns generally at lower speeds (78066 mileage). November 2019 same issue (98302 mileage) dealer told me with some cars two years is the life of a power steering pump. I would not be able to control the vehicle if this happened a any rate of speed. Also, the air conditioner has been repaired every year since 2015. Earlier in 2019 the blower on the heater totally quit and had to be replaced.
A week ago, I felt my 2012 Buick Enclave wasn't steering properly. . . Like I suddenly have considerably less control. . . As if the steering wheel is fighting me when I turn. I noticed it because I could not get my car's steering to respond coming onto an entrance ramp onto 76w in PA and it almost veered into the lane to the left (as I was fighting to hold my wheel to the right coming off the ramp). I brought the car to my local gm certified mechanic who did diagnostics and discovered a malfunction in my steering pump and a leaky hose. He suggested I call the gm dealer who repairs my car for any item under recall, bulletin or extended warranty because the issue he identified is consistent with a safety issue identified on earlier Enclaves. The service manager at faulkner Buick in west chester did state that it is an issue on earlier models and there is a bulletin issued for earlier models for power steering issues in Enclaves. My year/VIN is not covered. He suggested I call gm. I was on phone with gm warranty for an hour. They opened case but say they can't review case until the steering issue is verified by a gm service dealer. I will have to pay gm service dealer for diagnostics when I already paid a gm certified mechanic for same. Gm is not able to tell me until one of their service providers confirms issue what, if any, financial assistance they will provide. The repair is estimated at ~$1000. . . The entire pump and hose need to be replaced, and estimated labor is 6 hours. In meantime, I have to slow my car down to 20 miles per hour or less coming onto or off of ramps for major highways such as penn tpke because steering control isn't there & it feels as if wheel is pulling in opposite direction, I'm having to fight it, and it feels as if car will skid out. My mechanic looked at all other possibilities and id'd faulty steering pump and hose leak, specifically.