I have a 2001 Catera base model with about 160,000km or 100,000 miles.

I have lately started noticing a clunk noise when I shift from park to reverse and then from reverse to drive, normal backing out of one's driveway.

Do the Cateras have a Universal joint or yoke assembly that can be replaced as I was told my universal joint may be going?

I have searched compnine.com and rockauto as well as acdelco but cannot find a part number.

Any help in comments as to the following,

- Safety or driveability wise how serious is this issue
- Fix suggestion with part number if possible please
- Is it a home repair for a hobbyist some some tools with jack and jack stand
- Any estimate on a job done through a shop specifically in the Greater Toronto Area

Regards and I will be happy to clarify if it is not clearly described.