Question about 1999 GMC Sierra

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4X4 MAKES A LOUD CLUNKIN NOISE THEN WONT WORK AGAIN

I CAN HEAR THE 4X4 ENGAGE BUT IT MAKES A VERY LOUD CLUNKING NOISE AND STOPS WORKING...ANY SUGGESTION??

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If its manual shift,its internal damage,if its elect.shift could elect.shift motor and,or internal damage

Posted on Mar 12, 2009

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I have a 1994 k1500 6.5l turbo diesel and every time I put it into 4hi my truck goes about two feet then I hear a loud clunk and the truck feels as though it is going over a speedbump in the front because...


Wow. A snapped side shaft sounds serious. If you lift the front end of the truck, (or the rear end for that matter) the wheels will appear to be counter rotating, it is the way a differential works. If you turn the left wheel forward, the right wheel will turn backwards, and vice versa.
When you change to 4wd the front end does make a rather loud clunking sound as the gears engage. You should therefore change while the truck is stationary, then slowly move forward or back until the 4wd engages, then take off.
If your truck went OK on ice, it should go as well on pavement, just don't try to engage 4x4 while moving.

Mar 14, 2015 | 1994 Chevrolet K1500

1 Answer

Front differential


I am inclined to think that you may have gear teeth problems in the transfer case for it to lock up and make noises. Check the oil drain plug for metal bits.

Dec 27, 2013 | 2002 Chevrolet TrailBlazer

1 Answer

Clunking noise against floorboards while in 4x4


check your front universal joints and slip joint for wear. wear causes this unit to vibrate when 4X4 engaged

Nov 25, 2013 | 2001 Nissan Xterra

2 Answers

Wont shift into 4 wheel drive


Check the fuse to the 4x4, if the fuse is good then check the 4x4 electric motor actuator on the transfer case. You should hear it work from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if you don't hear it working then check the wire harness at the actuator motor, look for any damages like corrosion or cracked wire connector clips. If the 4x4 actuator is working on the transfer case, then the front hub 4x4 actuator may have gone bad and that's located on the front differential. It's common for the clip there to corrode and break and is an easy fix with a new collar pin, at worst it's the diaphragm on the vacuum actuator that is located under the battery tray. There is a vacuum switch on the top of the transfer case, driver side but when that fails, your front hub stay's locked in the on position. Good luck and keep me posted and hope it's a simple fuse that has gone bad. You can pick up all these parts at Auto Zone or Parts Source and they will have the step by step instructions for you to get the job done with common tools.

Jan 03, 2010 | 2003 GMC Sonoma Extended Cab

1 Answer

I have an intermittent. my car does not start time to time. by pushing it the car start. it work fine for several day, and does it again . need help.


When it doesnt start, does it make a at least a clicking noise? Maybe a clunk? A loud clunk but the starter wont engage means the starter solenoids contact is bad. A click would indicate either a loose connection to the starter solenoid or a bad contact on the relay. No sound at all is a bit more complicated to trouble shoot.

Nov 25, 2009 | 1997 Porsche Boxster

2 Answers

4 wheel drive (auto locking hubs) seems to be trying to engage.


I had the same thing happen. The automatic locking hubs are faulty, causing one or both hubs to try to engage or disengage onto the front driveshaft. This makes the clicking noise and loud clunking that you hear. You may notice your steering pulling to one side of the road,because one hub is locked in. Replace the automatic hubs with new ones, do not try to fix the old ones. I liked the
convience of automatic hubs but replaced mine with manual hubs, there just way more reliable.

Jun 04, 2009 | 1994 Ford F350 Crew Cab

2 Answers

2002 Chevy Silverado clunking noice when shift from 2wd to 4hi


It is somewhat Normal Depending on how Loud the Clunking is. This is a Common Complaint on the Chevy 4x4's. I have verified this through the Dealerships here in Oklahoma and they all say the Same thing But, I am with you, They should go into 4x4 without that Clunk for as much as we pay for them.

Jan 26, 2009 | 2002 Chevrolet Silverado 2500HD

2 Answers

1996 chevy K1500 transfer case slipping out of 4 wheel drive


Your trouble is most likely not in the transfer case but in the front differential engagement solenoid.

Dec 20, 2008 | 1996 Chevrolet K1500

1 Answer

1998 FORD ESCORT SEDAN


This noise is caused by the bushings in the brake calipers being worn out

Nov 05, 2008 | 1998 Ford Escort

1 Answer

Clunking and grinding noise


My 2003 F150 Supercrew would not engage in 4x4, it ended up being the shifting fork in the front end, cost me $200.

Jul 16, 2008 | 2005 Ford F-150

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