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Throttle body

8K views 12 replies 4 participants last post by  petevw 
#1 ·
How do you adjust the throttle body on a 04 trailblazer.. Looking for a way..
 
#3 ·
Correct....all controlled by PCM (computer).

Why would you want to change it anyway?? If it's idling too high or low, there are other reasons most likely.
 
#12 ·
Turbo

Thanks for that information...

I looked at some other threads talking about the t-stat... should the temp be 210 all the time for should it go higher or lower...

The threads stated that the coolant, t-stat and temp sensor should be replaced.. Do you know anything about that?
 
#13 ·
Thanks for that information...

I looked at some other threads talking about the t-stat... should the temp be 210 all the time for should it go higher or lower...

The threads stated that the coolant, t-stat and temp sensor should be replaced.. Do you know anything about that?
First, there were NEVER any TrailBlazer engines that had turbos from the factory.

Second, the temp gauge on the dash should stay pretty close to 210 all the time....exceptions would be using A/C during hot weather going up steep hills with a load, or pulling a heavy trailer, etc, etc., but even then, the temp shouldn't change all that much.

If there is a need to change the T-stat, then it's a good idea to change the temp. sensor too.

Coolant should be flushed & changed at 100-150K if original DexCool is still in the engine. It is long-life coolant, and doesn't need changing often.
 
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