What does the M symbol on the gear shift of an automatic 09 chevrolet silverado for?
Never saw an M before. Did you look in your owners manual?
try the owners manual .
The "M' stands for Manual. By shifting the gear selector to "M", the number 1 will appear. By pressing the up button on the shifter itself, It will display numbers up to 6. It's purpose is that it "locks-out" all gears above it. So for example if you wanted to tow something like a trailer and you didn't want the transmission to shift higher than third gear, you would select "M" and press the "up" button until a 3 appears.
You can also have it hold gears longer and tell it when to up shift or down shift when you want within reason. Also if you select 2 for second gear it will start off in 2nd which over time can cause your transmission to wear out.
What is the best gear to ride on a daily basis in the city?
DRIVE is the best gear. The truck was designed to be driven as an automatic. Changing gears often with no clutch would wear out your transmission much faster.
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