Tackling an LMM Injector Replacement the Right Way

If your Duramax is starting to haze at idle or you're seeing those dreaded balance rates climb, you're likely staring down an lmm injector replacement. It's one of those jobs that every 2007.5 to 2010 Chevy or GMC owner eventually thinks about, especially once the odometer starts creeping past that 150,000-mile mark. While it's definitely a bigger project than a simple oil change, it's not something you should lose sleep over if you're prepared for the work. ...

February 18, 2026 · 7 min · Italiano Billy