Thursday, June 7th, 2007 AT 2:42 PM
I want to change the plugs on my Tahoe. I've done this on other cars but on the Tahoe they appear to be encased in a metal cylander. Does this just protect the plugs? Does it pull off? I was afraid to pull too hard. Also, will it hurt the cooling system if I use something other than Dextran which cost about 100.00? Thanks
