FYI - update of the installation of a sensor link for the "Electronic Level
Control" system on a 1999 Chevrolet Venture.

Block the vehicle up before working underneath it.  If air is in the shocks,
moving the sensor can release air and unexpectedly let the vehicle settle down.

The link part is actually GM# 22153552, not the number I incorrectly posted
previously.  GM's price is $25.12 plus tax.

The link does not come with installation instructions, but it does include a
diagram of the correct orientation of the link to the sensor arm, so you won't
install the part with the arm in the wrong position.

The ball sockets at both ends of the link are plastic.  The link snapped at the
place where the plastic is thinnest, right at the place where the ball socket
narrows and is formed around the metal bar connecting the two sockets.

Other than the break, there was no visible damage to the old link or the
sensor, and the sensor arm moves freely up and down.  It was likely just a
fatigue failure, contributed to by the very cold weather.

Using needle-nose pliars, I was able to easily pry the old plastic ball sockets
off the metal ball ends without removing them from the vehicle.  When working
on the sensor, be careful to pry against the end of the arm.  Don't apply force
on the arm which can be transferred down the arm to the sensor.  Also be
careful not to damage the surface of the ball ends with the teeth of the
pliers.

I used vice-grips to gently squeeze the new ball sockets onto the ball ends.
Be careful to align the socket with the ball to minimize the amount of force
required to press the socket on.

Thanks Bon·ne·ville for correctly diagnosing this problem for me.

VHarris