After reading the owner's manual, and still having problems, then go see the dealer. Try putting it in neutral first
The 4 wheel drive system on a 2002 Land Rover Discovery is engaged by pressing the 4 wheel drive button on the dash. It sends an electrical signal which activates the system.
If it has 4-wheel drive you would see controls on the dash to engage 2-wheel high, 4-wheel high or 4-wheel low.
It could be the problem. The dealer can scan the code with a Tech II unit they have. www.trailvoy.com The Trailblazer enthusiast forum!
The 2002 Jeep Wrangler has four wheel drive.
The 2002 Toyota Corolla has front wheel drive.
The 2002 Volvo S60 has front wheel drive.
The 2002 BMW X5 has all wheel drive.
The 2002 Subaru Forester has all wheel drive.
The 2002 Chevrolet Malibu has front wheel drive.
The 2002 Nissan Altima has front wheel drive.
The 2002 Volvo S80 has front wheel drive.
The 2002 Acura NSX has rear wheel drive.
The 2002 Chevrolet Impala has front wheel drive.
The 2002 Honda Odyssey has front wheel drive.
The 2002 Mitsubishi Lancer has front wheel drive.
The 2002 Chevrolet Camaro has rear wheel drive.
The 2002 Ford Mustang has rear wheel drive.
The 2002 Kia Sportage has rear wheel drive.
The 2002 Volkswagen GTI has front wheel drive.
The 2002 Dodge Durango has rear wheel drive.
The 2002 Toyota Prius has front wheel drive.
The 2002 Toyota Sienna has front wheel drive.
The 2002 Ford Explorer has rear wheel drive.
The 2002 Toyota Highlander has front wheel drive.
The 2002 Kia Rio has front wheel drive.