Trying to replace my water pump and was told labor would cost $90 for an 06 impala 3.9L I don't know if it's reasonable for the amount of work.
That's about an hour labor in some places. Whats the problem. I would have charged you at least an 1.5 hours According to that link above, $125 is the lowest just for labor only.
way too cheap , they are obviously going to stack the price on extras and ancillaries, belts, coolant, thermostat etc
Very reasonable. $90 an hour is a typical rate for a certified mechanic. And replacing a water pump on your Chevy could easily take up to 2 hours or longer.
A water pump. Ninety dollars sound like 1.5 hours of work at $60 to $65 an hour. The car must cool off first. The car must be emptied of coolant . The serpentine belt must be removed. There might be other items that may need to be placed out of the way on this Impala, capitalized, Mr. Swayward, as car names are proper names and must be capitalized. Apparently teachers do no cover this in class any more. There are many bolts that need to be removed. There is a gasket that needs to be removed. There is a water (coolant) pump that needs to be removed. There is a new pump that needs to be installed. There is a gasket and a cover pan to be installed. There is a serpentine belt that must be returned to service by adjusting the tension. There might items that were removed that need to be moved back. There is coolant fluid that must in added to the vehicle. Past a certain point of adding coolant the engine is run to circulate the fluid to burp the system out of air. As the coolant levels goes down, more fluid is added. Repeat as needed. Once assured of no air then the radiator cap is placed and then work can be checked for leaks and for quality of work, A few minutes of monitoring the engine and the temperature are needed. An experienced mechanic could possibly do this faster but the labor rate comes form a book or website used all over the USA as the time an average mechanic would need to complete this job. As to your question. Is it reasonable? Since you know where on the planet you happen to park this car, then you could call another car repair shop and ask as to this job. You can compare prices.