Well we have quite a bit of snow here in the Seattle area and I put the '85 K5 Blazer into 4WD of which it hasn't been in for a few months at least unless pulling out my 9000 lb boat out of the water. Anyhow, when driving straight and getting over 25-30 mph, I get quite a thump in the front end somewhere about every so often. The 4WD is engaged because I can feel it so I know that isn't the issue. I have Warn manual hubs and then shift on the floor (which is factory). I haven't done any service recently to the front axle so not sure what is going on there. Anyone have any clues as to what this might be? Didn't notice this thump when turning, just when going straight and over 25-30mph. Thanks.
- posted
20 years ago