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That's all you need to do! The rubber will isolate it. It worked for me.

humvee m998 cadillac solenoid valve location

There are no heat shields on any of the crossover pipes (should I install one? Would it make a difference? ) However I did find a loose heat shield attached to the transmission oil stick. Just need to find a way to secure and test....

Thanks, I will work on it over the weekend and let you know of the outcome.

I get a vibrating high pitch noise on my 1989 M998 at about 35 mph and goes away at about 40 mph. it sounds like an exhaust heat shield noise. I check for loose parts but can not find anything. Any ideas? Thanks

Thanks so much! It worked. Problem solved. No more Hissing noise.

1988 m998 hmmwv constant hissing noise on inside by brake petal. Brakes work fine. Checked power steering, brake fluid. All good. Tested Hydro boost seems to be working. No leaks on power steering either. Any ideas. Hissing noise driving me crazy. It was not there 2 days ago. Thanks, NEOS

Let me know if you find a tech. I just got a 1988 HUMVEE M988. Thanks NEOS