The Red Wings led, 3-1, with 13 minutes left.
The two-time defending Western Conference champions Red Wings haven’t been swept since the first round in 2003 by Anaheim.
Joe Thornton scored 6:42 into the third to pull San Jose within a goal and Logan Couture tied it with 6:43 left.
Tomas Holmstrom and Dan Cleary gave Detroit a 2-0 lead in the first. San Jose’s Devin Setoguchi scored with four seconds left in the period, but Henrik Zetterberg restored Detroit’s two-goal lead early in the second.
Detroit’s Jimmy Howard made 29 saves and Evgeni Nabokov stopped 32 shots for the Sharks.
Zetterberg had a first-period goal negated by video review because the puck went in off his left skate in a distinct kicking motion. Zetterberg was also stopped by Nabokov on a penalty shot — awarded in the first when Couture made a rookie mistake of covering the puck in the crease with his glove.
Penguins 2, Canadiens 0 — Evgeni Malkin scored a power-play goal 1:16 into the third period and Marc-Andre Fleury made 18 saves for his fourth career NHL playoff shutout, lifting Pittsburgh to a a 2-1 lead in the Eastern Conference semifinal series.
Malkin took Sergei Gonchar’s pass and fired a one-timer from the right side past Jaroslav Halak to give the Penguins a 1-0 edge. Alex Goligoski also assisted on Malkin’s fifth goal of the playoffs, but first since Game 4 of the Penguins’ first-round win against Ottawa.
Pascal Dupuis scored into an empty net with 15 seconds left to seal the win and regain home-ice advantage for Pittsburgh.