Why are my 4hi and 4LO lights blinking?

Tonight while driving the 4×4 light and the 4Lo light both started blinking. I wasn’t even trying to switch between 2H and 4H when this happened. As of now my truck is stuck in 4 high. I tired switching back to 2 High and even into 4Lo.

Can a truck go into 4 HI or 4 low?

Truck isn’t engaging into 4 Hi, but will go into 4 Low. c… Q: Truck isn’t engaging into 4 Hi, but will go into 4 Low. I have a 2003 Chevy Silverado 2500hd 6.6L Duramax. I just got the drivers side CV axil halfshaft repaired by a repair shop yesterday, and now today the truck will not engage into 4wd Hi. It will engage into 4wd Lo however.

What happens when I put a 4Lo in a 4HI?

When I put it in 4Hi from 4Lo the 4Hi light will stay on, but the front axle isn’t engaged. And Sometimes… It wont transfer the power, like it is in Neutral, except there isn’t a Neutral setting.

Can a 4×4 truck shift into a 4HI?

Only it’s a 1996 S10 4wd pickup. the truck will shift into 4hi but will not engage. I’ve tried unplugging the Transfer case control module but that did not work. Any suggestions anyone? Alrighty, I took my truck into school today to try figure out the problem.

Why are the 4hi and 4LO lights flashing?

So this week it started up again and I drove the truck direct to the dealer and left the engine running so they could get the diagnostics on for an error code. When the 4HI and 4LO lights were flashing the 4WD system will not work. After spending a couple of hours on it the dealer figured it was a faulty actuator in the front differential.

When to switch from 4WD Hi to 4WD Low?

If the driving conditions allow you to drive faster without risking damage to your 4×4 and you can safely go over 15 mpg, you can then confidently switch back to 4-High without any risk. Always ensure you stop first before engaging 4-Lo and slow down before reverting back to 4-Hi.

What does the blinking 4 wheel drive indicator mean?

So what is that 4 wheel drive indicator blinking on your dashboard means? The purpose of the 4 wheel drive light is to indicate when you have engaged 4WD mode by selecting 4H. When the light flashes continuously for more than 30 seconds it signifies there is a problem somewhere on your drivetrain system and that 4WD has not engaged properly.

What happens when I press 4HI from 4Lo?

Whne I press 4Hi nothing happens. I have to be in Neutral to get it to do anything. When I press 4Hi in neutral, it will try to do it (i can hear it try, the voltage drops) then it goes back to 2Hi. 4Lo works. When I put it in 4Hi from 4Lo the 4Hi light will stay on, but the front axle isn’t engaged.

Why is my 4 wheel drive light not engaging?

If you don’t shift it into neutral, the 4wd light will continue to flash and won’t get into gear. Seems to be a common occurrence on these trucks. Dodge dealers recommend engaging 4-lo, then back in 2-wheel drive, then back in 4-wheel drive hi (4H). This sequence apparently resolves the problem.

When do the 4hi and 4LO lights start flashing?

I hear the 4WD HI engage before movement. Same with 4WD LO. (indicators off, not flashing) Won’t engage after the indicators start flashing. ABS and “skidding car” Slip indicator are solid on, whenever the truck is running. It all started when I approached a stop and applied the brakes; approximately 30 mhp.

Why are my 4hi and 4LO lights blinking?