Landcruisin60

iTrader: (2)

Hey guys I have a new to me 01 Silverado 2500 2wd. Tow haul hasnt work since I bought the truck so I researched on here and found that the wires breaking is a common issue. So I checked and guess what mine were broken. So I ordered a shifter off eBay and the listing specifically said tow/haul works on the shifter. So I installed the new shifter and nothing. Still doesnt work. Is there a fuse that could be blown? I hope its not an issue with my PCM or something stupid like that.


Thanks for the help

SilverDog

Mine stopped working once, had a small break in the orange wire going from the shifter. I assume when you reinstalled the new shifter you reconnected the wire?

AKlowriderZ71

iTrader: (22)

If it was a used shifter, the wire strands are probably broken inside the insulation. I'd pull the clamshells & check that first. Never seen anything else ever cause this.

Landcruisin60

iTrader: (2)

I'm pretty sure the wires are fine. But I can check the resistance in the wires.


Had a little side thought there. If I were to momentarily cross the wires at the plug that should turn on tow/haul, right? If it does then the issue is in the wiring or switch. If not then the issue is somewhere else. Would this work?

TIM Z

iTrader: (12)

hmmm, every one ive seen the wires were broke. They have to be the smallest gauge wires ive ever seen!

Landcruisin60

iTrader: (2)

I believe the button is activating tow/haul just the light isnt coming on. Any idea what would cause that?

SnakeOiler

iTrader: (6)

You should be able to tell if tow/haul is activated just by driving it. The shift points are way different.

burned out bulb would answer your question.

viciousknid

iTrader: (8)

agreed. The bulb could just be blown on the cluster. when driving about 25mph push the button and see if the converter unlocks. RPMs should increase 2-300rpm

Landcruisin60

iTrader: (2)

Ok that makes sense. From reading the owners manual I thought that the little information center light screen thing on the left is where it says tow haul. But after some internet research I see there is actually a light on the upper right of the cluster that says tow/haul. I'll check that bulb.

viciousknid

iTrader: (8)

it'll just be a trailer that lights up.