Question about 1996 Pontiac Grand Prix
Are you sure it's a tick or is it more of a knock? There is a service bulletin on this issue from GM. Long story short, they tell you to replace all the pistons in the engine to fix it. BUT. This won't hurt anything and you don't have to fix it. I have this exact car. It's been doing this since it's had 75,000 on it. It now has 210,000 on it an is still doing it. It knocks when its cold till it warms up and the pistons expand. Then it goes away. Car still runs perfect.
Posted on Jul 08, 2010
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Posted on Jan 02, 2017
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