Bayern Munich's outgoing boss must mastermind a two-legged victory over the team built by his successor if the Germans are to reach a second successive UEFA Champions League final next month.
But ahead of the first leg at the Allianz Arena Heynckes made it clear Guardiola is not Bayern's manager just yet.
"I admire Pep Guardiola, but I don't need any advice from other coaches," he said at the pre-match press conference in Munich.
"I know my team better than anybody and I also know a lot about Spanish football and Barcelona. There has been no kind of contact at all."
Bayern have been beaten finalists in two of the past three years, but Heynckes rubbished suggestions last season's failure to get the job done on home soil against Chelsea would weigh heavily almost 12 months on.
He said: "Bayern are currently playing the most modern, contemporary football in the history of this club.
"We will not be wasting any thoughts on the failure against Chelsea last year. We have a plan for the game."
Lionel Messi is expected to be fit for the game, but Heynckes said: "I expect he will be able to play and it is not something which is causing me a headache. Barca are about more than just Messi."