I have a 2005 trail blazer and my truck shakes when I get over 60

Yes , have a professional scan tool hooked up an check for DTC'S - diagnostic trouble codes , an look at sensor data . Then test main line pressure with a gauge . Can the shift solenoids be controlled with a bi- directional scan tool . This video is on a jeep but your trail blazer is electronically controlled as well .

2005 Jeep Grand Cherokee Laredo Gear Shifter Problem

Many of these goes bad since these units are made very cheaply in Mexico for GM

1st check to make sure air intake is opening all the way even though most vehicles are fuel injected these days there still is a idle screw located at the air intake also you might be having clogged fuel injectors

You did'nt mention what engine you have. The illustration below is for a 4.2L, the most common for the trailblazer.
The arrow indicates front of vehicle.
Good luck, let me know.
Regards,

Sorry, the process is simple but too lengthy to post here.

Goto homelink.com

They make the system and have very complete instructions you can download.

PLEASE NOTE: MOST but not ALL Brands / models of opener will work with this system.

As for your shaking at highway speeds, providing your tires have been balanced properly, it's probably a u-joint. If you let off the gas when it's vibrating, and the vibration quits immediatly, it's a u-joint. If it doesn't, it's a tire or wheel.
The squeak is probably a shock, but that would be a guess.

It is located on top of the valve cover. Buy the new one and you will see what it looks like, then you will pull the hose off of it and put the new one on, 5-minutes at top to do this job.

Dear hispeed3,

If you haven't bought the part yet and are planning on replacing it ...i'd go to the auto parts store and ask them for the part location. They are usually glad to do this. I know Advanced Auto Parts does this for me.

Are you having a problem with your 2005 Chevy Trail Blazer?
If so...I'm here for you!

jack
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you may have too much oil in the truck drain it and put in5 quarts of 40 weight oil

When the ABS light is on when driving there is a problem in the anti lock brake system and you will need to have it tested to find out what the problem is. As long as the light is on the ABS has been shut off by the computer until it is repaired. There could be problems with one of the wheel speed sensors, wiring or the ABS pump. On some vehicles the red brake light will come on too.