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Hey everyone I'm in desperate need of help I was replacing knock sensors on my wife 06 Tahoe 5.3L and the front one came out beautifully unfortunately the rear is so badly rusted it disintegrated. from what I can tell the senor has separated from the crimp sealed top and the lower casing is rust welded to the side. I have already tried the following
Chisel, air hammer(low pressure just to break rust),
The Valley Cover has a removable rubber seal/grommet in that area around the bottom of both of them. Unbolt the Valley Cover, pry it off evenly on both sides and that rubber piece will come out of it. Then you can get at it. Done a few that way. The grommet is Dorman Part # 42003.
The Valley Cover has a removable rubber seal/grommet in that area around the bottom of both of them. Unbolt the Valley Cover, pry it off evenly on both sides and that rubber piece will come out of it. Then you can get at it. Done a few that way. The grommet is Dorman Part # 42003.
Got it thanks guys ya every online/other forms said this year had the reverse cone style and the sensor had to come out first but did what y'all said and boom pair of vice grips 30mins later clean and clear thank you will be heading to junk yard for replacement cover
You don't need a replacement cover, you just buy and put the new Grommet back in, why I took the time to even give you the part number.
Unfortunately I did need a new cover after cleaning up and looking over the rust had eaten through in one spot and nearly on few other spots just above the grommet level so either way I needed replacement. It was 10mins of work(lucky found engine with manifold already removed)and 13$ from a junkyard. So installed and back on the road