2011 gmc sierra

[2011gmc1500]

i have a 2011 gmc sierra 1500 z71 4 door gas...i tow a boat and trailer that weighs roughly 4000 lbs. up certain hills it struggles. would a super chip, exhaust, and an air intake make a difference in the performance? anyone have any other suggestions?

 

[badazz2013]

what does the superchip do?

 

[bighammer4]

Do you have the "tow" button on shift level pushed in? Sounds like truck is trying to stay in 6th gear with convertor locked up. Can't do that going up hill...

 

[pondscum]

Do you know your rear gear ratio? If you have the 3.08:1, it will object a bit to steep grades. If you have the more standard 3.42:1 (I think?), as suggested, hit the tow button.

I regularly towed a boat, motor, trailer that weighed in around 2500 lbs with gear and gas in it, and my 2012 barely even knew it was there or saw any appreciable decline in gas mileage. I would hit hills with ease, but they are not significant grade around here.

What's the mileage on your 2011?

 

[2011gmc1500]

i live in the mountains so huge grades im going up. i will look into the gear ratio. tow button does little help with the steep grades. 32k on the mileage