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"supercharger noise" sounds like its coming from the tran


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Check for codes that have been set, you have an onboard diagnostics computer and do not need a code reader, post the codes here if you find any

Check your fluid level

Smell your fluid to see if it smells burned

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Check for codes that have been set, you have an onboard diagnostics computer and do not need a code reader, post the codes here if you find any

Check your fluid level

Smell your fluid to see if it smells burned

PC0603 History

PC1642 History

IP1552 History

AC1348 History

NO SDM

TC0027 Current- I have a hub disconnected.

RS0036 History

RS0046 History

PZ1558 History

NO IRC data

NO RFA codes

NO CCP codes

My Fluid doesnt smell burnt. its NOT black. (sorry)

This is the sound it makes

Edited by --96 STS--
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I'm not going to comment on the whining noise as I have never heard a sound like that before and couldn't begin to guess exactly what it is.

If your trans fluid is black then it's extremely likely burnt. It would typically smell similar to burnt popcorn in that case. The fluid should be red-ish.

When you checked the fluid for color, did you check the level as well? If it's too low, or too full, it could cause the trans to overheat, burn the fluid, and damage internal parts.

I'll look into code meanings in a few minutes here....

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I'm not going to comment on the whining noise as I have never heard a sound like that before and couldn't begin to guess exactly what it is.

If your trans fluid is black then it's extremely likely burnt. It would typically smell similar to burnt popcorn in that case. The fluid should be red-ish.

When you checked the fluid for color, did you check the level as well? If it's too low, or too full, it could cause the trans to overheat, burn the fluid, and damage internal parts.

I'll look into code meanings in a few minutes here....

Ok I was just out there checking the fluid again, it is not black (sorry about b4.) It seems like it is the right color but its runny not like how it was when i put it in.

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That is a hydraulic noise, possibly caused by air. It could be the pump, misplaced filters, bad seals, etc. You say that its engaging into gear slowly, that could be the result of low pressure, we had a member replace his pump and solve the problem. Ill try to find the thread later, you might try to find it, search whining, pump, etc

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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P1642 - Vehicle Speed Output Circuit (never saw this code before, but there is a VSS in the tranny, is your speedometer working?), check the connections on the top of the right output shaft for good connection

P0603 - Control Module Long Term Memory Reset (battery must have been disconnected)

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Pump? what pump do you mean?

There is a pump in the tranny in the side pan.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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My uneducated guess about the sound....it is a pump.

Sounds like it is starving for fluid.

Is the "FLUID LEVEL" where it is supposed to be?

Check it at normal operating temperature on level ground in "PARK"

Is the fluid a light red/pink color?

If not ...drop the pan and do a fluid change.

If you drop the pan, be sure to check the filter/screen for proper placement and clean everything well.

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Dropped the pan and changed the fluid. It does sound like something is not getting fluid, The fluid was normal but there was a slight build up. its still making the horrible sound.

Have you checked the codes?

If not, check them and post them here....

There may be a code relating to the torque converter.

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