1997 chevy C1500 5.7L low humming/vibration

[mbecke2]

5.7 L 350 has 146,000. She's starting to make a low humming sound from the front between about 15mph and 40mph. Can't quite explain it very well. I can feel it in the foot pedal and sometimes when I brake. Never had this sound before. Thought it was front bearings so I replaced inner and outter on front two tires, didn't help at all. I have mud tires that are about 4 years old and it may just be the tires wearing in. Was wondering if there is some routine things I need to change at this mileage like idler arms, joints, steerin arms, etc. Engine seems to be running fine its just this damn sound that aggrevating me. Could it be wheel alignment, brake problem, etc...????? Maybe I just need to go back to all-terrains.

[mbecke2]

Originally Posted by mbecke2

5.7 L 350 has 146,000. She's starting to make a low humming sound from the front between about 15mph and 40mph. Can't quite explain it very well. I can feel it in the foot pedal and sometimes when I brake. Never had this sound before. Thought it was front bearings so I replaced inner and outter on front two tires, didn't help at all. I have mud tires that are about 4 years old and it may just be the tires wearing in. Was wondering if there is some routine things I need to change at this mileage like idler arms, joints, steerin arms, etc. Engine seems to be running fine its just this damn sound that aggrevating me. Could it be wheel alignment, brake problem, etc...????? Maybe I just need to go back to all-terrains.

Yesterday I noticed when cruising about 30, I swerve left and right and it makes a low pitch noise when i turn left. Could it be the power steering pump giving me all this trouble??