Question about GMC Sierra 1500

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Tow haul fuse - Sierra 1500 GMC Cars & Trucks

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: tow/haul light wont turn off

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!

Posted on Apr 27, 2009

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SOURCE: tow/haul does not work on 2000 chevy truck. whereis fuse?

I had a problem with my tow/haul button not working. I came to find out that the gear shift had cut the wire running to the button in two. You may want to check that.

Posted on May 06, 2009

  • 12 Answers

SOURCE: Where is the tow haul fuse on a 2001 gmc 2500hd?

side fuse panel, I am not sure but I thought that it had a breaker so that it should reset.

Posted on May 28, 2009

  • 2 Answers

SOURCE: tow haul light on sierra 2002 wont come on

I'v heard that the tilt wheel causes the wire to break. Most likely the wire has been broken. Somewhat easy fix.

Posted on Jul 05, 2009

  • 180 Answers

SOURCE: 2004 f350 6.0 diesel- tow haul light flashing

climb under the truck! on the drivers side of the trans in the neutral safty swith unplug it and look for rotted connectors! if so repair damage! second go to passengerside near the rear of the trans ull see a plate that s being held by 2 7 or 8 mm bolts remove plate ! behind the plate there will b another plug do the same! inspect for corrosion

Posted on Mar 19, 2010

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1 Answer

2006 Chevy express 2500 instrument panel lights stopped working after two wires touched going to tow switch. No blown fuses


Which I/P lights ? Instrument cluster , radio , HVAC control panel etc.... All the I/P light's are controlled by the BCM - body control module . Do you know about electronic control modules ?
DTC B2610 Passenger Compartment Dimming 1 Circuit
The body control module (BCM) receives a variable voltage signal from the instrument panel (I/P) dimmer switch requesting to illuminate the instrument panel controls illumination lamps to a desired intensity. When this occurs, the BCM directly sends a variable voltage based on the I/P dimmer switch position on the backlight lamps control circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuit.
Voltage for the backlight lamps control circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuits is from the TBC 3 fuse 16 in the underhood fuse block directly through the BCM to these circuits.

• Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
• A short to ground in the following circuits will cause the TBC 3 fuse to open:
- The backlight lamps control
- The instrument panel lamps dimming control
- The LED dimming signal
- Battery positive voltage from the underhood fuse block TBC 3 fuse
• An open in the TBC 3 fuse will cause the BCM to set the following DTC:
- B0951
- B2610
- B2625

DTC B2615 Passenger Compartment Dimming 2 Circuit
DTC B2620 Display Dimming Pulse Width Modulation (PWM) Input Circuit
DTC B2625 Display Dimming Pulse Width Modulation (PWM) Output Circuit
Do you know how to Test for a high resistance, an open, a short to ground, or a short to voltage in the following circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
• 5-volt reference
• The dimming input
• The dimming return

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 disables tow/haul mode and returns the transmission to a normal shift pattern.

After reading all the pertinent info. to your problem, doing testing ,Checking for DTC'S -diagnostic trouble codes in the BCM , checking power and ground's for the BCM an checking voltage at the tow / haul switch to and from the BCM .is where i would start . Do you know how to do electrical testing ? Read a wire diagram ? If not there are videos on youtube for learning how to do basic automotive electrical testing , how to read wiring diagrams etc... You can find free wiring diagrams at
http://www.bbbind.com/free_tsb.html The only thing with this is you don't have info. saying where componet location's are . This is were factory service info would be helpful

Jan 04, 2017 | Cars & Trucks

1 Answer

What would cause my TAHOE TOW/HAUL mode to engage on its own?


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.

Sep 23, 2015 | Cars & Trucks

1 Answer

MY 2000 YUKON XL ONLY HAS ONE WORKING CIG LIGHTER AND THE TOW HAUL IS STUCK ON


Check fuses for cig lighter, and replace a switch for towing

Apr 15, 2014 | GMC Yukon Cars & Trucks

1 Answer

TOW/HAUL Indicator Light jeep cherokee 2005


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.

Apr 15, 2013 | 2005 Jeep Grand Cherokee

1 Answer

Fuse for the Tow Haul switch


No, the switch is powered from the transmission, and if the had no power, you would not move. If the light is not coming on, then there is something wrong, like you are in S instead of D.

Oct 30, 2012 | Chevrolet Cars & Trucks

1 Answer

2001 gmc yukon tow haul engaging disengaing on its on


could be the switch or modual.check wiring for worn through or earthing.

Feb 09, 2018 | GMC Yukon Cars & Trucks

1 Answer

I have an '03 f350 and the trans fluid guage went hot and tow haul started blinking


check your trans fluide oil for a burnt smell
if so replace ---mercon sp only in power shift trans
anything else will cause damaged
tow haul light fashing = trasmission code
need to scan probably faulty sensor chaff wire
dirty conection /partialy unplug junction
burnt fuse

Dec 28, 2010 | 2004 Ford F350

3 Answers

Tow haul light on sierra 2002 wont come on


I'v heard that the tilt wheel causes the wire to break. Most likely the wire has been broken. Somewhat easy fix.

Jun 24, 2009 | 2000 GMC Sierra

4 Answers

Tow/haul does not work on 2000 chevy truck. whereis fuse?


I had a problem with my tow/haul button not working. I came to find out that the gear shift had cut the wire running to the button in two. You may want to check that.

May 05, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

Transmission tow/haul mode


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.

Jul 20, 2008 | 2001 Chevrolet Silverado 2500HD

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