Rev. counter B-fig. 33 - 34 shows engine rpm.

IMPORTANT
The electronic system progressively blocks fuel flow to prevent engine from overrevving. This will lead to a progressive loss of engine power. When the engine is idling, the rev counter may indicate a gradual or sudden highering of the speed.
This is normal as it takes place during normal operation, for example when activating the climate control system or the fan. In particular a slow change in the speed preserves the battery charge.
See also:
Interior Fuses
The interior fuse panel is part of the Body Control Module (BCM) and is located
on the driver’s side under the instrument panel.
Fuse Panel
...
Cold Weather Operation
To prevent possible engine damage while starting at low temperatures, this vehicle
will inhibit engine cranking when the ambient temperature is less than –22° F (–30°
C) and the oil temperature se ...
Recreational Towing (Behind Motorhome, Etc.)
Trailer towing with this vehicle is not allowed.
NOTE: Vehicles equipped with manual transmissions may be recreationally towed
(flat towed) at any legal highway speed, for any distance, if the m ...


