Power steering pump went out, very expensive to repair.
Engine is making a knocking noise while engine is running.
Now the engine is making a rattle noise under a load.
Car makes a high pitch noise while going down the highway.
This car has been nothing, but a headache from day one, all I do is repair it and it gets very costly.
However it has great power and handling, fuel economy is great, but I would never buy another one again.
Well For one it had 160k on it when you bought it so of course you should expect problems.
The knocking noise is normal. all 4.9's do it it is just the main cam bearing making noise. Cadillac says it will not affect anything.
Sometimes engine noise can be attributed to belt driven accessories IE: AC, alternator, PS, and water pump. Bearings in the pulleys can wear and they get noisy and need replacing.
You shouldn't complain about those minor problems for a car with so many miles on it. You don't really expect a car with 160,000 miles on it to run like-new do you?
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