With the departure of Ron Theobald, Garcia was named the Brewers' starting second baseman for the 1973 season, and made his Major League debut on April 6, going hitless in three at-bats against Dave McNally in a 10-0 loss to the Baltimore Orioles.

Garcia earned his first career hit the next day, a home run against the Orioles' Mike Cuellar in an extra inning 8-7 loss.

In 1975, Garcia lost playing time to Kurt Bevacqua and Bob Sheldon, appearing in only 98 games, hitting .225 with 6 HR and 38 RBI, although he tied Robin Yount for the team high in stolen bases with 12.

Garcia signed as a free agent with the expansion Toronto Blue Jays on January 3, 1977, and was their opening day second baseman on April 7.

After his time with Toronto, Garcia signed with the San Diego Padres on July 5, 1977, but he spent the rest of the 1977 and 1978 seasons with their AAA affiliate, the Hawaii Islanders.