Heathcliff and the Catillac Cats - Season 1 - Eps 118: Pecos' Treasure
Mungo finds half of a treasure map in the junkyard, and the Catillac Cats take off for the desert to search for the lost booty. There they run into Pecos, a cat prospector who just happens to have the other half of the map. It's a mad rush to get to the treasure first, but there's plenty of loot for all.
About Heathcliff and the Catillac Cats

Title: Heathcliff and the Catillac Cats
First Air Date: 1984-09-17
Last Air Date: 1985-10-07
Status: Ended
Rating: 6.3/10 (from 48 votes)
Language: EN
Seasons: 2
Total Episodes: 172
Network: Syndication FR3
Genres: Animation, Comedy, Kids
Production Companies: ICC TV Productions, DIC, DiC Entertainment
Cast

Mel Blanc
Heathcliff (voice)

Donna Christie
Cleo / Iggy (voice)

Peter Cullen
Pop / Max (voice)

Jeannie Elias
Jeannie Elias (voice)

Danny Mann
Hector (voice)

Marilyn Lightstone
Sonja (voice)