RAM 1500 Owner's Manual page 590

588 STARTING AND OPERATING
Activating HDC
Once HDC is enabled it will activate automatically if
driven down a grade of sufficient magnitude (greater
than approximately 8%). The set speed for HDC is
selectable by the driver, and can be adjusted by using the
Electronic range switches located on steering column
shifter. The following summarizes the HDC set speed:
Gear
P
R
N
1st
2nd
3rd
4th
Approximate HDC Set Speed
No set speed. HDC may be
enabled but will not activate
0.6 mph (1 km/h)
1.2 mph (2 km/h)
0.6 mph (1 km/h)
1.2 mph (2 km/h)
1.8 mph (3 km/h)
2.5 mph (4 km/h)
Gear
5th
6th
7th
8th
9th
NOTE: During HDC the ERS +/- shifter input is used for
HDC target speed selection but will not affect the gear
chosen by the transmission. During HDC the transmis-
sion will shift appropriately for the driver-selected set
speed and corresponding driving conditions.
Approximate HDC Set Speed
3.1 mph (5 km/h)
3.7 mph (6 km/h)
4.3 mph (7 km/h)
5.0 mph (8 km/h)
5.6 mph (9 km/h)