I have a 92 chevy 1500 v8 w/4wheel drive. I am new to plowing.What I want to know is what gear range do I use for plowing, 2 wheel drive, 4H , or 4L. Which is best for the trans and engine so that they don't over heat.
You do not say if the truck is Auto or Manual. I like low for driveways and such when using the Auto. In open areas you will want to use 4 high. I run Fords so not sure how the Chevy manual is but on a Ford 1st gear is a pulling gear that seems to work fine for plowing in 4high. On my Toyota though I often use low with the manual in driveways cause the 1st gear is a higher ratio.
If you have an auto I would recommend a cooler and temp guage. If the temp goes up stop and let the truck idle till the temp drops.
For an auto transmission, 4H most of the time. 2H for open, large lots with light snow. I've never yet used 4L and I've plowed some pretty steep drives. I've got one that's so steep, I don't even try to plow uphill. I get a good run, go to the top with the plow raised so I can turn around and plow (every 2-3") down hill.
No one mentioned it yet, so for heavy wet snow, or conditions where you are putting a lot of load on the truck, use low range. This will take the load off your transmission and let the transfer case do the work. If your motor revs a lot higher and your not moving much, it's time for low range, excessive heat will destroy your tranny.