Originally Posted by CoachDriver
Is there anyone with similar vehicle being - 2009 gmc sierra 4x4 sle crew cab that can tell me if you tow yours and what the sequence is or getting it into tow mode.
Yep, we've got almost the same exact truck as you do and, we tow it all over the planet. Our coach, an '04 Itasca Horizon, 36GD with the C-7 330HP CAT, tows it just fine. I did the total setup for getting it ready to tow. That included the base plates, yes I said "PLATES", (there's two, one for each side) and, I did the wiring. Talk about simple, it don't get much simpler. The truck, is an '11 GMC Sierra, Extended Cab, 4x4 w/ 6' bed.
And, on many of our trips, that truck is carrying a Rampage, motorcycle lift/carrier which, is hauling a 2008 Honda Goldwing, GL 1800 in the back of that truck. The total amount of mass being drug behind our coach when the lift and the bike are in there, about 6500 lbs. plus or minus a few. And, like stated, the coach handles it just fine. Yep, we slow on some grades, but, that's to be expected. We still get to our destinations.
Now, I can tell you the procedure for reading it for flat towing. It's actually quite simple.
1. Engine running
2. Parking brake set
3. Foot on service brake
4. Transmission in neutral
5. Turn transfer case shift knob all the way past 4L to the stop and, hold it there for about 5 seconds or so, until an "N" appears on the knob, that normally is not visible if not attempting this operation.
6. Once the "N" is visible, then release the knob and, put the transmission in park
7. Shut engine off, remove key, (ours has no steering lock so, the key can be removed or, left in there, but is in the "off" position).
You are now ready to flat tow it.
But, here's the deal, I strongly advise you READ THE MANUAL because, there's minor details that are changed, from year to year in those manuals, and model years of trucks. So, what we do could be a bit off of what's required for YOUR ACTUAL TRUCK!
If you'd like info on the base plate install or, the wiring of it for towing (lights etc.) please PM me and I'd be very happy to assist you in this matter. I wired it to use the stock tail lights as toad lights. That way, when someone's following me when we're towing that truck, the tail lights act the exact same way as they do if we're driving it. Good luck.