Literary Toons: Looking For Grandma Little (The Littles, 1984)

 From season 2 of The Littles:

As in any other community, there are bound to be some bad eggs. As Grandpa (Alvy Moore, ex-Green Acres), Dinky, Lucy, & Tom search for Grandma Little, using a remote control speedboat that Henry (Jimmy Keegan) can take over, a pair of bad guys are hunting for treasure, and steal the boat. 

For once, Henry's greater size works to his advantage in capturing the crooks. It seems, though, that the subtle flirting Lucy was doing with Henry in season 1 had faded.

Here's "Looking For Grandma Little":

Rating: A.