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clinebarger · 08-26-2015, 08:22 PM

IIRC, A 2001 4x4 has a VSS Jumper Harness, Probably in the harness in the pic But I cant see it. The Jumper harness just extends the VSS wires for 4x4 models.

Locate the Jumper Harness, Cut the Male connector off, Locate the Original '87 VSS connector, Cut it off the harness (Leave enough wire to splice) Splice the '87 VSS connector onto the '01 Jumper Harness....Polarity doesn't matter.

Locate the VSS connector at the Main engine harness under the truck, Wire colors Purple/White & Light Green/Black. Plug the Female end of the Jumper into VSS connector, Plug the other end into the '87 VSS on the T-case.

Here is a drawing that may help.....

08-26-2015, 08:22 PM	#5
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Help with LS Swap dealing with 4x4 and NP241 TCase. Speed sensor. IIRC, A 2001 4x4 has a VSS Jumper Harness, Probably in the harness in the pic But I cant see it. The Jumper harness just extends the VSS wires for 4x4 models. Locate the Jumper Harness, Cut the Male connector off, Locate the Original '87 VSS connector, Cut it off the harness (Leave enough wire to splice) Splice the '87 VSS connector onto the '01 Jumper Harness....Polarity doesn't matter. Locate the VSS connector at the Main engine harness under the truck, Wire colors Purple/White & Light Green/Black. Plug the Female end of the Jumper into VSS connector, Plug the other end into the '87 VSS on the T-case. Here is a drawing that may help..... Attached Images