Recent content by GM GUY

This is an old trouble shooting method. With the engine running, use a little WD-40 or silicone spray where the manifold meets the head or where you suspect there is a vacuum loss, watch for changes. Do not use starting fluid or highly combustible fluids for obvious reasons. When you are done...

Based on my experience any GM vehicle navigation disk (same year or a newest update) will solve your troubles.

Check the BCM (body control module) you will need a tech 2 scanner to run codes.

You will need a new wiper arm. (same thing happened to me)