Chosen Solution
Temp rising slightly on highway and transmission slipping at stoplights in city afterwards. Changed trans fluid (was dark brown) - seemed to fix on test drive towing same camper - temp needle stayed pegged at normal. However, cooling fan turned on immediately when starting van 7 -10 minutes after test drive. Did trans fluid change possibly NOT fix the issue? -KJ
Check your coolant level, transmission filter, your thermostat and water pump. Goodluck bud
