Driving and Operating -> Engine Exhaust for Your Chevrolet Silverado 1500 Light Truck 2023

220  
Driving and Operating  
Engine Exhaust  
Automatic Transmission  
Warning (Continued)  
If unusual fumes are detected or if it is  
suspected that exhaust is coming into the  
vehicle:  
Automatic Transmission  
(Mechanical Shifter)  
There is an electronic shift lever position  
indicator within the instrument cluster. This  
display illuminates when the vehicle is on.  
Warning  
{
Engine exhaust contains carbon monoxide  
(CO), which cannot be seen or smelled.  
Exposure to CO can cause  
.
Drive it only with the windows  
completely down.  
unconsciousness and even death.  
.
Have the vehicle repaired immediately.  
There are several different positions for the  
shift lever.  
Exhaust may enter the vehicle if:  
Never park the vehicle with the engine  
running in an enclosed area such as a  
garage or a building that has no fresh air  
ventilation.  
.
The vehicle idles in areas with poor  
ventilation (parking garages, tunnels,  
deep snow that may block underbody  
airflow or tail pipes).  
.
.
.
The exhaust smells or sounds strange  
or different.  
Running the Vehicle While Parked  
It is better not to park with the engine  
running.  
The exhaust system leaks due to  
corrosion or damage.  
See Driver Mode Control 0 240 and Range  
Selection Modeunder Manual Mode  
(Mechanical Shifter) 0 227 or  
If the vehicle is left with the engine running,  
follow the proper steps to be sure the  
vehicle will not move. See Shifting Into Park  
(Mechanical Shifter) 0 216 or  
Shifting Into Park (Electronic Shifter) 0 217  
and Engine Exhaust 0 220.  
The vehicle exhaust system has been  
modified, damaged, or improperly  
repaired.  
Manual Mode (Electronic Shifter) 0 229.  
P : This position locks the rear wheels. Use  
P (Park) when starting the engine because  
the vehicle cannot move easily.  
.
There are holes or openings in the  
vehicle body from damage or  
aftermarket modifications that are not  
completely sealed.  
If parking on a hill and pulling a trailer, see  
Driving Characteristics and Towing Tips  
0 299.  
When parked on a hill, especially when the  
vehicle has a heavy load, you might notice  
an increase in the effort to shift out of  
(Continued)