Tow haul mode/overdrive not working???

76greenmachine · 10-10-2009, 08:04 PM

Hi, Iam new to the forum. Just bought a 2003 w/58,000 miles.
This is my 1st diesel and love it. I just found out after reading manual that I have overdrive and tow haul mode. I have tried several times pushing the button on the end of the column shifter, but I dont see anything on the dash indicating engagement. I have a hard time finding Park. The original owner told me it needs a Neutral Safety Switch. Could this be related to my OD/Tow mode problem??? Any help would be fantastic Please. Thanks guys!

Seattle, Washington

midwest 09 dmax finally · 10-11-2009, 02:16 PM

im not sure what to tell you but when you push the button when your at speed it should take off overdrive and shift differently. It should give you a light but not sure on that truck. As for the safety switch, im not sure but do a search and you should find something.

**Hook'em_Horns!** · 10-11-2009, 02:48 PM

Tap the shifter button to engage the T/H, showing a dash icon as enabled. Push and 'HOLD' the same button, 'O' is then disabled, showing icon on the dash.

va3pc · 01-29-2010, 09:57 AM

I have an 06 and have the same problem. The dealer troubleshot it and said the wiring harness between the switch and the steering column came open. A new switch (and harness) will be about $100. including the install. Its on my to do list. I wonder if this is a common problem with those tow/haul controls?
Paul

Kroggs · 01-29-2010, 10:09 AM

More then likely the wire has been chewed through. Depending on wher it is you can splice them back toghether a lot cheaper then a new shifter. I did it on mine and works fine easy to do also.

gya0ma7ha · 01-29-2010, 10:19 AM

My truck has a 175K on it and haven't had that problem yet. Must just be unlucky. Sorry about that.

Brad92 · 01-29-2010, 05:40 PM

The tow/haul button wire is probably broken. It is common for that to happen, especially if the wheel is tilted up and down alot. Check the orange wire to make sure it isn't broken, or at the connections.

ALT-B · 06-27-2010, 08:05 PM

Anyone have any instructions on getting to where the wire might be broken? - mine just went out too.

Kroggs · 06-27-2010, 08:09 PM

Take the cover off that is over the hazard light switch and look for a orange wire at the bottom conected to the shifter.

ALT-B · 06-27-2010, 08:15 PM

Thanks Kroggs - any "typical" break location?

Also I thought I read somewhere to be careful about accidentally deploying the air bag - anything to be concerned about?

10-10-2009, 08:04 PM	eBay Motors #1 (permalink)
76greenmachine Junior Member Join Date: Oct 2009 Posts: 1	Tow haul mode/overdrive not working??? Hi, Iam new to the forum. Just bought a 2003 w/58,000 miles. This is my 1st diesel and love it. I just found out after reading manual that I have overdrive and tow haul mode. I have tried several times pushing the button on the end of the column shifter, but I dont see anything on the dash indicating engagement. I have a hard time finding Park. The original owner told me it needs a Neutral Safety Switch. Could this be related to my OD/Tow mode problem??? Any help would be fantastic Please. Thanks guys! Seattle, Washington

10-11-2009, 02:16 PM	eBay Motors #2 (permalink)
midwest 09 dmax finally Member Join Date: Sep 2009 Location: minnesota Posts: 47	im not sure what to tell you but when you push the button when your at speed it should take off overdrive and shift differently. It should give you a light but not sure on that truck. As for the safety switch, im not sure but do a search and you should find something. __________________ 2009 chevy 2500HD Dmax 8500 miles and bone stock right now

10-11-2009, 02:48 PM	eBay Motors #3 (permalink)
Hook'em_Horns! LHN...We ARE the Joneses Join Date: May 2008 Location: Awww-stin, TX Posts: 8,590	Tap the shifter button to engage the T/H, showing a dash icon as enabled. Push and 'HOLD' the same button, 'O' is then disabled, showing icon on the dash. __________________ 2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air, Sulastics *Use-ta Haves* 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"

01-29-2010, 09:57 AM	eBay Motors #4 (permalink)
va3pc Junior Member Join Date: Aug 2009 Location: Callander, North Eastern Ontario Posts: 17	I have an 06 and have the same problem. The dealer troubleshot it and said the wiring harness between the switch and the steering column came open. A new switch (and harness) will be about $100. including the install. Its on my to do list. I wonder if this is a common problem with those tow/haul controls? Paul __________________ 06 LBZ 2500HD CC, 4x4, SB, Edge Evo, MBRP Cool Duals 08 Wilderness Extreme Edition 2652BS 5er

01-29-2010, 10:19 AM	eBay Motors #6 (permalink)
gya0ma7ha DuramaxForum Veteran Join Date: Apr 2008 Location: College Station Tx. Posts: 1,424	My truck has a 175K on it and haven't had that problem yet. Must just be unlucky. Sorry about that. __________________ TEXAS A&M ENGINEERING SOLD: 2001 2500HD LT CCSB 4X4 LB7 AKA: "WHITEY" Tuned by SCRTuning: 431 HP 823 TQ New Truck: 05' CCSB 2500HD 4X4 LLY Code Name:Lilly 2 inch drop Shackles and Front set to match LBZ Mouthpiece, 5" TBE, EFILive by SCRTuning

01-29-2010, 05:40 PM	eBay Motors #7 (permalink)
Brad92 Junior Member Join Date: Jan 2010 Location: TEXAS Posts: 25	The tow/haul button wire is probably broken. It is common for that to happen, especially if the wheel is tilted up and down alot. Check the orange wire to make sure it isn't broken, or at the connections. __________________ 2004 Chevy Silverado C2500HD CCSB LB7. (THE TANK) Pretty Much Stock, Fully Loaded, Fleet Emissions, Crappy EGR 1997 Chevy Suburban C1500 (The Bus)Stock, The 350 is still going strong at 170,000+ 2002 GMC Sierra C1500 RCSB 4.3 V6 (The Green Machine)Misc. Headlight Mods, 6000K HID's, K&N filter, Airbox mod, Throttle Body mod, Resonatorless, Radar Detector, Garmin GPS and others. Sound System by Alpine, Pioneer, and MTX.

06-27-2010, 08:05 PM	eBay Motors #8 (permalink)
ALT-B Member Join Date: Jan 2009 Posts: 38	Anyone have any instructions on getting to where the wire might be broken? - mine just went out too. __________________ 2002 2500HD Duramax 4x4 \| Hypertech on Level 3 \| AIRAID Filter 2007 C5500 LMM (2008 FourWinds Chateau RV - 34')

06-27-2010, 08:15 PM	eBay Motors #10 (permalink)
ALT-B Member Join Date: Jan 2009 Posts: 38	Thanks Kroggs - any "typical" break location? Also I thought I read somewhere to be careful about accidentally deploying the air bag - anything to be concerned about? __________________ 2002 2500HD Duramax 4x4 \| Hypertech on Level 3 \| AIRAID Filter 2007 C5500 LMM (2008 FourWinds Chateau RV - 34')

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