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You need to have a diagnostic scan tool hooked up ,glitch in one of the control modules or a wire in the circuit shorting to ground ! probably something simple but hard to find ! With a factory scan tool they can check the input signal to the BCM ,PCM .
Tow/Haul mode enables the operator to achieve enhanced shift performance when towing or hauling a load. When tow/haul mode is selected, the tow/haul switch input signal to the body control module (BCM) is momentarily toggled to zero volts. This signals the powertrain control module (PCM) or transmission control module (TCM) to extend the length of time between upshifts and increase transmission line pressure. Cycling the tow/haul switch again, or cycling the ignition switch disables tow/haul mode and returns the transmission to a normal shift pattern.
That light means that the shift points have changed on the transmission. This is to get better economy when hauling. If it wont stop flashing then there is a valve in the transmission that is bad or sticking. You will have to have it removed and overhauled..
Th e tow haul button is so if your towing a heavy trailer its easier on the tranny when you hit the button you generally dont need to use it for everyday regular driving.
That is the Tow/Haul indicator. Button on the end of shift selector was most likely depressed during shift or possibly a malfunction with the tow/haul mode selection system. (IE: Tow/Haul button)
check all your fuses. If your lucky you might find one the is blown and could be related If not fuse related then you need to remove the platic steering column
cover. Under there at the end of the shift lever you will find two
small wires that are for the tow haul button. These wires get brittle
and break over time from shift level movement it seems. You will have
to repair the broken wire and you should be good to go!
I had that problem yesterday and researched the web. Found out underneath the steering column, take the bottom plastic cover off, there is a orange wire for the tow/haul. It's actually 2 white wires with orange covering. It was broke.
Splice the two wires back together and it works great...
I have found that on three silverado's there is a plastic clamp on the bottom side of steering column where the wires become broken and can short out. You have to remove the column covers to see this, it should be claser to the lowe dash trim panel area needs a shifter to repair unless you can fix that little wire!
Hi, the problem is when you are tilting the steering wheel all the way up it's putting to much tenstion on the wires that come outof your shifter that run to the tow/haul button. i am 99% sure your wires are disconected. rewire them and add some extra wire so next time there will be more slack in your wires.
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