6.0/3.73/6speed in mountains pulling 8000 lbs
I have 2013 suburban 2500 pulling my new Creekside 27 bh which is 8,000 loaded. First trip with this combo over Stevens pass hwy 2 in Washington state. Once the serious climbing started I was 2nd gea...
Forum Discussion
hawkeye-08 wrote:
Most of the charts are for older (30 years old) transmissions and fluids. The newer (at least 2008 and up GM) can and do run hotter. IIRC, the trans can go to 265. 235 is normal for pulling that grade. Make sure you have tow/haul selected. Keeping things clean for max airflow is a good idea.
x2. Disregard those charts. You're fine at 235*, especially for a short burst.
Nothing wrong running at 4500 rpms, either. You are right in the engine's power band.
