Seven problems related to water pump have been reported for the 2008 GMC Acadia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 GMC Acadia based on all problems reported for the 2008 Acadia.
Since I bought the truck the I get an on and off message to service the air bag. Also while I am driving the truck over heats and when I come tona stop and turn the engine off and completely remive the key. The engine stays on and water pump starts to buble as if the water was boiling and after about five minutes there is no water in the pump and when you add water the water get extremely hot. I have seen in other forums where all have had the same issue. I am extremely disappointed in the quality of the vehicle. I have four small children and don't feel safe however the truck is financed and I have no option.
I noticed a leak in my driveway under my 2008 Acadia. I immediately took it to dealership so they could find out where it was leaking. They found the engine leaking in several places including the front cover. In addition to the engine leaking, they also found the water pump to be leaking and in need of being replaced. While putting new seals in the engine, they found that the timing chains were showing signs of wear as well. All in all, the car needed several seals replaced, the timing chains replaced, the water pump replaced, and the power steering pump replaced. The car only has 73000 miles on it!.
Purchased new, have had the following problems 2011 :water pump failed, and engine oil leak new pump and gaskets,2012: oil pressure sensor replaced, 2013: wave plate broken sent metal through transmission major transmission repair, front and rear a/c failed and needed replacement. 2014: master cylinder leaking - replaced. 2016: purge solenoid stuck open was replaced, oil leak- timing cover leaking (did not replace- too expensive)- multiple calls to GMC and dealing with the dealer not satisfied and feel the car is a safety risk.
Locked up making a turn going slow, pump getting noisy, just got back for water pump replace.
We purchased our 2008 Acadia in 2011, it had approximately 30,000 miles on it at the time of purchase. Less than thirty days after purchase we had to replace the front rotors. At 40,000 miles we had to replace the front brakes; the air conditioner backed up, which required maintenance to the blower motor; and the head lights went out, which required replacement. At 45,000 miles the rear struts went out, which required replacement; and we had to replace two tires. At 60,000 miles the water pump went out and needed to be replaced. At 55,000 miles the front struts went out, which needed replacing, along with four new tires, and a new set of headlights. At 60,000 miles the rear brakes and rotors needed to be replaced. At 70,000 miles the transmission went out, which also required replacement. The final incident happened on 6/10/13 at 74,000 miles, while I was driving with all three of my children. I was going 50 miles an hour on a highway, and the entire car shut down. The steering console locked with the keys in the ignition, I had no ability to steer the vehicle, the brakes did not function either. I had to use the parking brake to slow the vehicle down, barely avoiding a collision with another vehicle.
Traveling approximately 65 mph in the far left lane of a major highway. Going up a slight incline I tried to accelerate but the car was not reacting then the rpms would shoot up but the car would not react. I had to cross 3 lanes of traffic to get to the emergency lane. The car would not go over 20 mph after that and struggled at that. I managed to get to a gas station. 1 tow truck, 1 rental car and now $1500 to replace the "wave plates" and "wave housing". Additional note - the car broke down in August 2012 as well. In that incident the water pump had to be replaced.
Steering locks up. When you take off from a stop sign or traffic light and want to make a right or left turn the steering will lock up to a point where you can't turn. There had been several occasions that I was almost in an accident. Replaced rack and pinion 3 times and power steering. Water pumps are defective, replaced 2 before 100,000 miles transmission went out at 73,000 miles. Every issue that is stated above the dealer didn't want to replace under warranty,even after contacting gm. It took a lot of fighting with gm to replace the transmission when there was known problems with these transmissions being faulty.