I have recently towed my 26X (1890 kg with trailer) with my 2001 GMC Safari van 4WD (4400 LBS towing capacity) to Vancouver over the Coquihalla pass (which has some pretty steep spots) where I got a bit lost in a very steep subdivision of Van city driving in low gear for quite a long time up and down hill. After this I noticed the van not running as smoothly as it used to... fine trembling especially at low RPMs and when the engine is cold. Being not mechanically inclined, could I have blown a gasket or is it a cooling system/ transmission problem or something else? I also noted the temp gauge climbing quite a bit on the steep uphills, I actually turned the heat on to cool the engine. Also found some water leak around the right front wheel and the coolant level a bit low
, which I have replaced. I m planning to repeat this trip in about a month. Shall I take it to a mechanic beforehand?
Thanks for your input!