No more 4-Low

[Shaughnles]

Hey guys, long time user, first time poster.

Just finished swapping a m5od into my 93 auto, everything works perfectly except there's no 4-Low. I'm assuming there's a wire I need to ground in the old harness for the auto.. I saw a diagram that looked like the red/white needed to be grounded. However, I just spent 2 days working on this thing and don't really feel like going back outside right now.

Any help would be appreciated.

P.s. it was working on Friday when I started.

 

[4x4junkie]

Welcome to TRS

The 4WD module is likely looking for the signal that tells it the transmission is in Neutral before it can shift to Low (does the Low Range light blink when you try to shift?).
It does appear this signal wire is red w/white stripe. You'll need to route the wire from the old gear selector switch (from your auto) over to the Clutch Pedal Position Switch so that it instead grounds the wire when you push down your clutch pedal (there's a wire on the CPPS that also suspends the cruise control (if you have that), which you may want to reroute that as well to the CPPS so the engine RPM doesn't start racing if you try to shift with it active).

Hope that helps

 

[Shaughnles]

Update! Grounded the red/white wire, works good now. Don't have time this week to try to ground it through the clutch but I'll try next week.