99 Durango doesn't have a Heater Control Valve, It only has a thermostat
in the dipstick hole.
'99 Durango
59/99 is equal to about 0.596.
No.
About 21 horsepower
A 1999 Durango does not have any part called a GPS sensor.
no, not from the factory
With a scan tool,
No
in side the transmission
The fuel filter is part of the Fuel pump assembly, located in the gas tank of the '99 Durango. It cannot be changed independently of the fuel pump.