Hopefully you can still find them. 61G's are discontinued, and they are selling off leftover stock. When they're gone, they are GONE! 9G's are the replacement glow plug, are made in GERMANY as well, and are what you now have available. The difference is the 61G's were 4.7V, and the 9G are 4.85V(It looks like the LML uses the 9G, so GM just swapped over to the 9G plugs in place of the 61G's). And the info out ther about the 9G's being to short, tips swelling and all the rest are WRONG! The new 9G's are NOT the ones everybody had problems with 20 years ago. GM had a 9G glow plug they used from the late 80's up to 95, yes they had problems with swelling and burning up as they were a non regulated plug, BUT GM DISCONTINUED THEM IN 1995! The misinformation that a quick search of 9G shows is astounding.
