02 blazer bank 1 and 2 lean codes

[EagleMark]

Something has changed in brake fluid and even starter fluid that they don't work for finding vacuum leaks anymore. To prove... just spray some in intake and engine does not raise RPM...

Now try a propane torch! If it finds a vacuum leak the RPM will rise!

[jim_in_dorris]

Yeah, That was what I was going to try, just need to get a propane torch.