Transmission Noise

[bulump]

2003 Suburban 1500....4L60 transmission (I think)

 

 

I get an audible noise from the transmission when it drops down into 3rd (I think) when climbing a hill, usually in cruise. Once the vehicle drops down, usually an 8 count goes by and a guttural "NNNNNNN" sounds, and repeats (every 8 seconds). I think its 3rd gear, 'cause when testing out all alternatives, I could get the "NNNNNNN" to occur without cruise on while going up a hill....

 

 

Does anyone know what this sound is? I'm going to get it looked at, just want to know to so I know how far to bend over.

 

Thanks,

Chris

[bulump]

2003 Suburban 1500....4L60 transmission (I think)

 

 

I get an audible noise from the transmission when it drops down into 3rd (I think) when climbing a hill, usually in cruise. Once the vehicle drops down, usually an 8 count goes by and a guttural "NNNNNNN" sounds, and repeats (every 8 seconds). I think its 3rd gear, 'cause when testing out all alternatives, I could get the "NNNNNNN" to occur without cruise on while going up a hill....

 

 

Does anyone know what this sound is? I'm going to get it looked at, just want to know to so I know how far to bend over.

 

Thanks,

Chris

 

Ok.... after months and months of trying to find out what the hell is making this noise....I have found it!

 

03-01-38-019A: Underhood Rattle Noise Heard on Acceleration

 

sonuva.......

 

So it looks like my AC compressor is seizing thus agitating the tensioner on the serp line, thus the audible noise. I would like to disconnect the electrical to the AC compressor so I can still run my defroster, but not to engage the compressor so that it makes that noise.

 

Where can I find the electrical connection on the AC compressor?

[Draenor]

Its on the side of the unit. There is a wire with a pigtail connector on it.