2004 trailblazer HARD TO TURN

SOURCE: steering is stiff

the problem could be contamination in ps fluid.i would flush the system and replace fluid first .if that does not solve the pronlem you most likely need power steering pump. the steerjng box is very unlikely.

Harvey N Tawatao

• 3854 Answers
• Posted on Apr 09, 2009

SOURCE: a clunk when i turn

It sounds like your CV Joint is worn. Simple check is to drive in a left circle and then right circle. If the noise get's worst when your turning left or right, then it's time to change the CV Joints.
Might as well change both sides since they have the same miles.
Total CV joint failure = Tow to the shop. 
Good luck and hope this helps.

SOURCE: I have a 2004 Chevy Trailblazer LS with strange noise.....

If it is making a noise in the belt area, have them check the water pump. These get loose water pump bearings that cause belt noise.

SOURCE: My 2005 Chevy Impala's power stearing problem?

From the sounds of it, that pothole messed up your steering. Something is binding in the steering train, could be a damaged tie rod end, one of the other steering joints, or even the rack and pinion steering itsself. When it's binding, the power steering pump has to work too hard, slowing the engine down, making your lights dim because it's also slowing the alternator(on the same belt drive) and furthering your steering problem. You need to get it checked out immediately before something breaks and gets you into an accident. Remember, if steering linkage breaks, you have NO control of your vehicle, and it doesn't care if you're driving 70 mph on the highway.

SOURCE: 2004 chevy trailblazer-Reduce engine power

You need to get the fault codes read to determine where the problem is that set the SES light. Autozone will scan your car at no charge. At some point you will need to get a mechanic involved to further diagnose the codes.