Jaime Lozano chose an identical lineup for Mexico's first matchday in Group B following a convincing victory.
El Tri seemed to continue where they left off against Honduras, but it felt like they left their shooting boots in Houston.
The worst blunder came just before halftime when Henry Martin blunderlessly sent his point-blank attempt straight at the keeper to spare Haiti's face. Lozano's team squandered a flurry of chances against Haiti in the opening 45 minutes.
However, it did not take long for Mexico to find their opening following the restart, as Martin redeemed himself within a minute to head home from close range and put El Tri ahead.
Mexico pounced on a still-stung Haiti, scoring their second goal 10 minutes later on an own goal by Ricardo Adé.
Danley Jean-Jacques headed home from a corner in the last 15 minutes to cut the deficit in half and put Mexico on the back foot.
With Haiti attempting to equalize, Mexico was prepared to strike on the break, which they did in the last minutes, securing the match with a Santiago Giménez tap-in at the back post.
Mexico advances to the knockout stages in search of their first Gold Cup triumph since 2019.">