Should I put gasket sealant on UIM gasket?

[Langning]

I just replaced LIM gasket on my 01 GT (because off oil leak on LIM bolts) and finished everything yesterday. This morning after I did an oil change and started my car. And guess that I didn't do a perfect job. There is a leak on the passenges between LIM & UIM. I was to replace the UIM plenum as well but was having problem separating the throttle body as the bolt/nut both spinning. I didn't see anything wrong with my old plenum so I put in the new UIM gasket and bolted up everything.

In light of the coolant leak, should I put gasket sealant on the UIM gasket? Or can I (without remove the fuel rails and all the other connections) just lossen the UIM bolts and just retighten the bolts again?

I am looking for a simple solution as the weekend is coming to an end.

[BNaylor]

Originally Posted by Langning

In light of the coolant leak, should I put gasket sealant on the UIM gasket? Or can I (without remove the fuel rails and all the other connections) just lossen the UIM bolts and just retighten the bolts again? I am looking for a simple solution as the weekend is coming to an end.

The latter part of your reply answered your question. Go for the easy and redo the UIM bolts.

What brand UIM gasket was this and what torque figure did you use?

[Langning]

After stopping by Walmart to pick up more Dexcool,10W-30 and RTV Red gasket maker (in case I needed it), my GP cooled down. The fuel rail is blocking 1 of UIM bolts so I removed everything and UIM is completely out of my car now. Having done it once and the disassembly is quick and under an hour.

I don't known the maker/brand of my UIM and I did not replace my UIM plenum and just use the new gasket. The gasket look identical and snap in the same way.

I also don't have a torque wrench that measures INCH/pounds so I torque them by hand in many passes.

The torque sequence is
9 5 1 3 7 (long bolt w/ stub)
10 6 2 4 8

the small leak was coming from the top of LIM coolant hole near the bolt #7. Can I use a bead of RTV red gasket maker around the 2 coolant holes?

[BNaylor]

Since you have the UIM off I see no problems with using the hi-temp RTV sealant. But do yourself a favor and use an in-lb torque wrench. GM now recommends 11 ft-lbs/132 in-lbs since 2004. Old figure was 89 in-lbs.

[Langning]

Put everything back together and test driving the car and no more leak (so far).
Without using a torque wrench, I did the sequence in 5 or more passes and use just enough force off 2 fingers... Hopefully I don't have to pull it again. And Thanks,

The "check engine light" came on after the 2nd restart during my road test. Found out that I forgot to connect the EGR wire plug... Family is pressing me to go out now and I will check out my car when we return home.

Surprised to found out my radio retained its station preset after the negative terminal been disconnected more than a day.