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Vehicle make/model = 2001 Pontiac Grand Prix
Mileage = 70000
Engine size = 3.8  3800
dash lights = ABS  and Trac off Lights sometimes
codes = Transmission code was on and speed sensor light
work done prior = Change both front hubs.
work done to repair = Both Front hubs with speed sensors
tip/donation no = buttonId
tech = SF
question = Ok here goes.  My car ran fantastic for a long time.  It hit
about 60000 miles.  I noticed some growling from the car.  Happens
when i turn corners or inclined driveways sometimes out of nowhere.
Shakes steering column.  Sometimes it kicks on my abs light and trac off
light.  Also, and maybe tied with in previous condition list earlier.
When vehicle is warm it shifts hard.  I took it to a mechanic in my town
and he said i had three codes.  one transmission code and one code for
my hub assemblies needing replaced.  I dont remember what the other code
was.  I did however go to auto zone and they tested my car and no
codes came up.  what do you think could be the issue of these problems.
sorry to add on but I did change both wheel hub assemblies.






SF:
The codes are really the key. The trans code and the other codes that was
not front hub related. If no codes came up at autozone, then i would
suspect the local mechanic cleared the codes,and one or more just have
not returned yet, even though the shifting problem. If you can find out what
the code numbers were- maybe on mechanics reciept, then i could give
some advice.