I have a 97 Buick with a 3800 Series II vin K and the upper intake manifold cracked around the EGR port and flooded the crankcase with coolant while i was doing 120 km/ hr on the 427 (18 lane highway in Toronto.)
The result was destroyed big end connecting rod bearings at 122,000 km (65,000 miles??) and I needed an engine transplant.
Cost $5,000 Canadian.
Thanks GM for building a cheap plastic upper intake manifold out of recycled coke bottles.
My advice to anyone considering buying a GM is DO NOT BUY ANYTHING WITH A PLASTIC INTAKE MANIFOLD, OR AS THEY LIKE TO CALL IT, A COMPOSITE UPPER INTAKE MANIFOLD
You will be sorry just like me. I had NO idea that this piece of crap was an issue.
I wrote GM (3 times) and they offered me 800 bucks to go away and i told them to stuff it and I am now suing them in small claims court in Whitby Ontario.
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