THE ENGINE'S PLENUM(SPELLING??) MANIFOLD STARTED LEAKING WATER. MY MECHANIC SAID IT HAD "WARPED". HE THEN TOLD ME THAT GM WAS HAVING QUITE A PROBLEM WITH THIS PART. HE SAID HE HAD REPLACED ABOUT 10 OF THESE SO FAR THIS YEAR. AND THAT HIS PART DISTRIBUTOR SAID THERE WAS A NATIONWIDE BACKORDER ON THIS PLENUM MANIFOLD. I CONTACTED GM AND WAS TOLD THERE WAS NO PROBLEM OR BACKORDERS ON THIS PART. WOULD LIKE TO CONTACT OTHER GM OWNERS TO SEE IF THEY HAVE HAD SIMILAR PROBLEMS WITH THIS PART BUT DON'T KNOW WHERE TO START. ANY HELP WILL BE APPRECIATED. THANKS
1992
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM
MASTER CYLINDER LEAKING DUE TO NOTHING HOLDING PISTONS BACK, CAUSING COMPLETE COLLAPSE OF HARDWARE HOLDING BRAKES IN PLACE. *SKD