Where is the speed sensor on the transmission?

2005 Chevy 2500, 4×4 Duramax

boogie_4wheel says:

November 27, 2011 at 5:53 am

The sensor is located on the tail of the transfer case.

If it were on the trans, you would have an incorrect speed reading when the transfer case was placed in low range.
fasttoysmullen says:

November 27, 2011 at 6:20 am

I am not so sure about your truck, but alot of todays vehicles with ABS use the ABS sensors for the vehicle speed. They take the speed of all 4 and average it out, because you might be making a turn and the outside wheels turn faster than the inside wheels, then it sends the signal to the speedo.

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