2005 Chevrolet Trailblazer Questions

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We have had 2 Chevy Dealers & 1 local repair guy... tell me 3 different things for this A/C problem. Who to believe???
Can hear AC condenser clicking on & off while idling, have blower that blows out at all speeds & on forceful the recirculating button below radio.
Have been told 1)recycling switch problem, 2) when had a brake line rupture - braided line had been rubbing on something & rubbed a hole in brake line leading to zero brakes one day! We had asked the repair guy to look at the A/C issue also & were told that the A/C line had been compromised by the brake line as well - small pin hole leak now in ac line, 3rd) driver side actuator problem. All quoted about $500++ to fix it.
I went online and found a video on the actuators. I pulled drivers & pass. side(s) dash trim apart lightly. (Removed the plastic colored trim coverings for the dash area.) I can see the actuator on pass. side working. I can see one of the actuators high up above the gas pedal... it has the little circular dime size ring move when I turn the knob that changes the flow of the air from feet only to feet & chest, to chest only, and to defrost. I believe then this the mode actuator. Down below this about 6" & right next to the black vent line that runs across the bottom of the whole driver area - I see another actuator where the little ring thing that is supposed to move.... but doesn't move whether a)I move the air flow (Mode?, or b)whether I move the driver side toggle button that changes the temp. from colder to hotter. I have the diagrams from GM on the locations of the three actuators on this side, but can't find another one. I'm thinking the 3rd actuator is the defrost actuator and it must be way up inside and behind the mode actuator. Knowing we've had 3 different people look at this AC issue, and knowing what I've I told you.. what do you think? Do you think it's a driver side temp. actuator that needs to be replaced? Please advise!

ok so we changed the shift cable in october worked fine now just yesterday my car wouldn't start but would turn over like dead battery finally started but when got home i turn it off and key got stuck in igntion and gear shift was in park but dash was reading 3rd gear so wont let turn on or take key out finally we replaced the gear shift and then took off column cover and used the button to release the key. We cant figure this out. please any help or advice.

I was told just hand tight but its still leaking after I replace it. Thanks I have 05 trailblazer ls i6..

Now there is an engine light with an arrow in the middle that comes on

What is that?
Can I drive it to the repair shop etc

i checked the bulb good and i checked the fuse good also

Have to push and pull out a lot to get it to lock in and to exit the seat belt have to push the button 4-8 times to get it to eject.

I recently took my 2005 trailblazer to a dealership for pricing towards another vehicle. The question arose concerning the scheduled maintenance of the timing chain and if I had it done. I was not aware that a timing chain had to be replaced unless there were problems with performance related to the timing chain. Is this a scheduled replacement at 50,000 Miles?

What do you think

my truck never got "hot"...I just saw water pouring out of it and replaced it. This morning, I get in it. It starts up fine and I get about 1/4 mile and a big check engine light with a downward arrow comes on and the vehicle loses power. Will not go over 10 miles an hour. Went back home and cleaned the electronic throttle control, it was very dirty but still the light is still on and the truck will not go over 20 miles per hour so I guess it helped a little...any ideas??? I can push the pedal to the floor and nothing happens, it just won't go over 20 miles per hour.

This morning on my way to work in ICY conditions...I slid off of the road into a ditch. I was on a rural road so I just put the truck in "D" and gunned my truck and got myself out of the ditch. After driving about 3-4 more miles, I noticed that my temp gauge was going up and it went all the way to HOT. I pulled in a gas station and let it sit for a few. I went inside and bought 50/50 Antifreeze and as fast as I was pouring it in, it was running out from near the bottom of the motor. It was definitely not a hose or didn't seem to be and definitely not the radiator. The Truck has 220K miles on it so I drive it soft but I wonder if i did something when I gunned it this morning to get out of the ditch. ANY help would be appreciated.

Is there wheel bearings in the rear wheels