intake manifold would make the temp gauge run hot...plastic gaskets were junk and there was no recall but a group launched a class action against GM and they agreed to pay some money if you got the dealer to replace it but dealer costs are high. I always thought the 3.8 was bullet proof ...had them since 1987. I read about the problem in the Auto Trader ...called the GM guy who works on my cars, had all the top end gaskets replaced...at 115000kms the intake was starting to break down...waiting for him to do mt ss monte ..about 500.00
