Welcome to the forum . I also have a 06 Monte with the 3500, a LT. What color is yours? Pics? oh and btw I was told that black IS the fastest color!

 

Welcome to the site.

 

The 2006 is Blue with light gray interior. It doesn't have fog lights, but I would like to install some. I was thinking factory ones would be easy. Are there any nice aftermarket fog lights that would be better? Ill have to take a pic of it.

 

My 06 3.9l has this problem I have brownish stuff in my coolant I think thats the problem ur talking bout.........what do u do to fix this and is expensive?

 

Welcome!

 

welcome

 

Anyone? Help?..hmmm

 

How many miles are on your 3.9l? Does your oil filler cap have a milky residue on the inside part? If so that can be a head gasket issue. I don't think the 3.9l has the lower intake gasket problem.

 

52,312 miles........the car is still hot so cant check that but last oil change it looked ok to me.....i mean I jist had coolaint issues with the wate pump had to be replaced......and in the coolaint housing u can see half red half brown.....i was told the lower intake manifold...i just dont know thanks for ur help

 

Welcome to the forum and congrats on your vast collection of montes!!

Hey 06LTMonte, that sounds like how my coolant looked. I knew mine was still the dexcool because it was still slightly orange and a bit brown. Other users state that by adding normal green coolant to the GM dexcool it may have negative effects and you will start to see sludgy brown coolant.

The best fix is to replace the coolant and flush out all of the sludge. While your down there it also never hurts to check the thermostat because they are known to fail!

Good luck to the both of you!