The Bantams fell behind in the 83rd minute after Nathan Delfouneso finished from close range at Valley Parade.
Substitute Clayton Donaldson was then denied by a superb save from Matt Gilks moments later as Bradford looked to preserve their five-game unbeaten run.
The equalising goal came in the third minute of stoppage time as Danny Rowe smashed the ball into the top corner for his fourth Bantams goal since joining the club in January.
The only thing that would have completed the moment for Trueman is if there was 20,000 fans there to celebrate.
"We showed that fight and desire late on in the game," said Trueman.
"We have shown it the other way when we were defending leads but today we had to show our character to go and get a point against a very good team in Bolton.
"Credit to them and how they play, I thought both teams nullified each other for long periods of the game.
"It is just a shame the fans weren't there to see it. It is important you try and keep these unbeaten runs going, we are delighted with the point."
Bolton had won their last six games prior to kick off while Bradford were victorious in their last five outings.
Trueman feels the late goal keeps the momentum with his side, as they now look to a clash with play-off chasing Newport County on Tuesday night.
He added: "Hopefully it doesn't take the wind out of our sails. It is a tough one to take for Bolton but for us we can look to build on that.
"We have shown it in games before, we don't just roll over when good teams come here and take the lead.
"We have got the character and the squad to keep on fighting."
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