08 no heat and 4wd acting funny???
Ok guys, First off I noticed my four wheel drive was acting funny the other day, flipped the switch to high 4wd, put it in neautral, eased of the brake and put it back in reverse. The front tires werent pulling so I locked the hubs and put it in low 4wd worked fine, yesterday went to go to work and theres no heat, blower motors work, controls work, defrost works, just no hot air coming out of the vents.. Today went to hook to a trailer in the field 4wd worked fine on the high side with the hubs manually locked, but still no heat? Went to the dealer no "deisel mechanic" working, talked to a deisel owner he said possibly a bad vacuum pump. Any advice or any one have this problem.