GM quietly added a new Special Coverage, N262552620, for 2021 3.0 Duramax SUVs with a known issue on glow plug #2. It is not a recall, but it does extend coverage to 15 years or 150,000 miles on affected VINs when the #2 glow plug fails and sets specific fault codes. In this article, we break down which Escalade, Tahoe, Suburban, Yukon, and Yukon XL models are included, how this policy compares to the earlier 2020 truck bulletin, and what owners should do if their check engin

They look identical at first glance, but swapping the wrong glow plug on your 3.0 Duramax can lead to serious — even engine-destroying — problems. Discover the key differences between LM2 (73G) and LZ0 (72G) glow plugs, including voltage requirements, control module changes, fragility warnings, proper testing methods, and must-follow installation tips to keep your diesel running strong.