I am considering purchasing a 2005 2500 4x4 and one customer review said that it is only 3 wheel drive because it does not send power to the left front wheel. Is this true?

 

it is an open differential so its the same as any four wheel drive truck.

 

Can you say - "Lockers"?

 

Most 4X4sare not true 4X4s. If they do not have a limited-slip differential in the rear, then under poor traction situations only one rear wheel and one front wheel will receive power. To add insult, the tires with the least traction will receive all of the power. This means no forward, or rearward, movement. There are very few true 4X4s. By that, I mean equal power going to all four wheels at the same time under slippery situations. The Jeep Wrangler Rubicon, Dodge Ram Power Wagon, and Toyota Land Cruiser (1990's) are the few examples of true factory 4X4s. They all have selectable lockers, from the factory, that will give you a true 4X4.

 

Like Powerubi Waconsaid, the front wheel that slips (gets the power)depends on the traction they see. Open differentials suck, but most limited slip types are not suitable for the front because they have an adverse affect on steering (very bad PULL).
If you can install manual locking hubs (aka free-spin kit) you can put in a limited slip or locker in the front. I did this in my Ford, which came with manual hubs.

If you are slipping one of the front wheels with an open diff., you cansometimes "saw" thesteering wheel back and forth to get more traction. Thisworks best ifyou still have some forward motion.