I was just wondering if someone could address a couple of concerns regarding the '04 Blazer I have?

First, could someone tell me if it is normal for the truck to seem like it lacks power while driving when the A/C is operating? The truck seems as though it cannot get out of it's own way and really struggles when it is going up hill.

Next, does anyone know what could cause the airbag light on the dash to come on, stay on for a few minutes, go out and then come back on a bit later. It has been doing this since the 1st of June and has been doing it periodically since. Any ideas of where to start?

Any help is appreciated.

Thank you

 

I have an 03 that does both of those. It's normal to be somewhat sluggish when the AC is on because of the extra load the engine is running.
The airbag light on mine is the clock spring. When the light comes on, is it usually after moving the steering wheel?

 

When you say after the steering wheel has been moved, do you mean normal steering or like adjusting the column for the tilt?

Also, I understand the sluggish nature with the AC on and increased load. My concern is because I bought the truck and shortly after the tranny was slipping. The dealer replaced it and did so with a tranny that had about 50,000 more miles that the truck. After some fight, they SUPPOSEDLY put in another with only 26,000 miles on it. It seems to shift ok and such, but they are very firm...the truck sounds like it is SCREAMING (rpm's usually aroun 2700-3000 @ shift) and it seems very low end....not speedy. Is this normal for the blazer?

Thank you

 

That is about what our 99 blazer shifts at. It should not sound like its screaming though. Do you have a mechanical fan/clutch? They can sound loud like that if its hot and the fan is engaged. If it does it all the time is could be sticking and spining the fan all the time.

 

Pull the codes on the air bag comp. that will tell what is wrong.

 

No, it is not making the noise all the time, only on acceleration. It is loud like their is a massive influx of air. I know it is a strong motor, but do not know what is normal.

 

It sounds like the fan clutch is either engagaed when it shouldnt be, (Failed clutch) or the air coming through the radiator is very warm (If it is then the fan is working normally).

Did you ever get those codes for the air bag?

 

How would I determined if the fan is sticking or engaging when it should not be? . Also, would there be codes even if no check engine light? And do you use a regular ODB II scanner?

Thanks

 

You cant read Air bag codes with a startdard OBDII reader. sorry.

Without thye truck running, Grab the fan and see if you can spin it. It should not spin free but it should also NOT be locked up. You should feel resistance when you turn the fan but not so much that you are actually spinning the motor.