Question about 1999 Chevrolet Silverado 1500

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Where do I get info to buy new front differential for 99 Chevy Silverado 4.3L 4x4 and how much will it cost?

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Posted on Nov 17, 2009

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2 Answers

Are the head lights on all the time 1999 chevy silverado 1500 4x4


On a 99 chevy silverado if equipped with auto headlamps there is a sensor on the dash near the front center of dash a small black bubble. If it is covered it will cause the lights to stay on. The day time running lights are typically seperate from the head lamps

Jul 13, 2014 | 1999 Chevrolet Silverado 1500

1 Answer

2002 chevy silverado 4x4 wont shift into low range


sounds like a bad actuator on the front differential

Mar 08, 2013 | 1999 Chevrolet Silverado 1500

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Transfer case keeps blowing gaskets


I need a bit more information I take it this a 4x4 cause when you talk about transfer case it means 4x4 and am I to understand you replaced the transmission and transfer case and tail shaft?

Jan 16, 2013 | 1999 Chevrolet Silverado 1500

1 Answer

My 99 chevy silverado 1500 4x4 new model has a rubbing noise when driving. I jacked truck up, both wheels off ground. Rolled driver side wheel. the sound of rubbing came from driver side of differential....


It sounds like the front bearings on the hub or hubs is going out. at high speeds you may not hear it.

but driving on a regular city street may sound louder. sometimes sounds like your transmission is going

out, but its the front hubs. since you have a 4 x 4 replacing the bearings is more in depth, you will need

special tools such as lock ring pliers and a special deep socket to remove the inner lock nut made for

chevy and gmc trucks. I would recommend you get a diaghram, the best money for your buck is to

go to alldata.com and purchase a membership for your truck, and it will have a wealth of info. to include

printing and anything in referance to your truck. each vehicle cost under 17 dollars per year . I have it

on all my vehicles. good luck!

Feb 03, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

How do you get the front driveshaft out of 2001 chevy 4X4


Remove transfer case shield. Remove clamp on boot
where front drive shaft meets transfer case. use a flat
screwdriver to pry free end up and release clamp. (you need a special clamp tool to reinstall clamp )
Remove 4 bolts at differential end that hold U joint Retainers to yoke. Slide drive shaft to rear enough to clear yoke. then let drive shaft drop so it clears differential and slide forward until it come off transfer case shaft.

Sep 12, 2010 | 2000 Chevrolet Silverado

1 Answer

2004 chevy 3500 dually 4X4 front axle not working and no light showing 4X4


On the full size, the front actuator is electric, not vacuum.

When in 4wd mode, a switch on top of the transfer case conducts 12 volts out to the actuator. Wire #50 (brown) is the 12v feed, and it conducts to the light blue wire (#900) to the actuator.
When shifted out of 4wd, the switch opens up and no voltage goes to the actuator.

Check voltage at the connector for the front actuator (at the front differential - it looks like a large bullet that threads into the front diff.) If it has 12 volts, the actuator is the problem. If it does not have 12 volts, check the transfer case switch and the power feed to the transfer case.

I'll assume it is the actuator, if the plug to the actuator is getting 12 volts when in 4wd.
The way this actuator works, is it is a sealed chamber that gets heated by voltage. When it heats, the pin in the end swells and pushes a shift fork in the front differential. The shift fork engages a spline on the passenger side of the differential, and boom! you have 4WD.

GM offered an upgrade to this actuator that is a motor instead of a heated device. However, it requires a small harness addition, a spacer, and a new actuator. It is about a $150 to $200 option.

If I were you, I would buy a new heated actuator. They are available at most auto parts stores, and are about $90. They are also on eBay for about $55 plus shipping. These are very easy to change - just thread out the old one, and thread in a new one.

Good luck, That actuator is usually the problem 90% of time.

Dec 28, 2009 | 2001 Chevrolet Silverado 2500HD

1 Answer

2003 h/d chevy 6.0 4x4 making noise in 4x4 only in forward motion? what is it?


these are notorious for the bearings inside the front differential to go bad. if I'm correct, you'll need to either over haul the diff or replace it.

Dec 17, 2009 | 2003 Chevrolet Silverado 2500HD

1 Answer

I have a 1999 Chevy which is stuck in 4x4


If it's electronic 4x4, check the wire to the 4x4 sensor that should be located behind the front differential. If this wire is unhooked or broken, then it will keep it from shifting out of 4wd. Otherwise I would check to make sure there is adequate fluid in both the transfer case and front differential. Good luck

Sep 06, 2009 | 1999 Chevrolet Silverado 1500

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