vehicle shakes the dash and steeing wheel while sitting at a light but not in N on 1999 Pontiac Grand Am

replaced one motor mount was really worn have two more to replace still have issue replacing the one mount i thought could be the timing chain finding small amount of leak from coolent...which could be the water pump any idea's

Asked by for the 1999 Pontiac Grand Am
1 answer
If anyone has more suggestions on this one I am experiencing the same issue..thanks!