Question about 2007 Chevrolet Silverado 2500HD

Open Question

2007 chevy hd 4wd actuator diagnosis

How do I diagnose a bad 4wd actuator on 2007 chevy 2500hd

Posted by Anonymous on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 12 Answers

SOURCE: Chevy Tahoe 2001

Place vehicle in 4wd (high or low). This will hold the front drive shaft still for the rest of the test. Jack up the front end of the vehicle. Remove the actuator. Have a buddy spin the right front wheel while you use a long punch or screwdriver to try to manually engage the diff. The left front wheel should spin in the other direction if the diff is good. Also before you check the diff you need to grab the front driveshaft and make sure it is locked, If it spins freely when the truck is in park and in 4wd with the front end raised then problem is in transfer case. If you can't make the diff engage manually with punch then the problem is in the diff. If front diff engages manually then the problem is the actuator. Hope this helps..

Posted on Nov 27, 2008

Ad
robslac24
  • 2 Answers

SOURCE: 01 Chevy Silverado 4 X 4 not working. 4WD light

Having the same exact problem but with my 1999 escalade. Thought it was the actuator bought a new one installed it transfer case would engage but front end wouldnt lock. Took it out of housing left it plugged in got a friend to go through all the 4wd for me and the plunger never moved out the actuator. Checked my wiring harness which is a four prong ann it had one hot prong like it is suppose to. Traced wires even replaced dash switch same problem. Taking it to local dealership tom to have it checked for codes. I was told it could be the transfercase actuator even though its workin that actuator is what sends power to the front to engage the actuator to lock the differential.

Posted on Sep 16, 2009

RonPark
  • 855 Answers

SOURCE: need a repair manual for a chevy 2002 2500hd 4wd with gas engine

Depending on how technical you want to get try e-bay or a local book store. They would have a good choice and alot of different types you can purchase.

Posted on Dec 17, 2009

  • 14036 Answers

SOURCE: 2003 chevy silverado 2500hd 4wd makes grinding

sound like the shift motor or shift gear in transfer case that makes it go into 4WD.sound like gear damage or worn

Posted on Jan 01, 2010

Molson02536
  • 3854 Answers

SOURCE: I have a 2002 Chevy

Fuse is located at the end of eh dash on drivers side and the Actuator is located at the front differential and on the passenger side.
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.

Good luck. The actuator is usually the problem 90% of time but recheck all of the wire harness just to maker sure there is no short before replacing any parts. The actuator may not be fully engaged or disengaged and the fork to the spline may be what is causing the grinding.

88-UP C/K ACTUATOR UPGRADE
VEHICLE SERVICED: 88-99 CHEVROLET FULL SIZE
PURPOSE: IMPROVE AXLE CONNECT ENGAGEMENT TIME AND
COMPONENT RELIABILITY.

SYMPTOMS: NO FRONT DRIVE AXLE ENGAGEMENT WHEN SHIFTED INTO 4X4.

Obtain the following GM part numbers:
(1) 26060073 Actuator
(1) 88959465 Harness/Spacer Kit

Posted on Feb 03, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Front differential?


Sounds like the transfer case is not engaging into 4wd. It has a solenoid or actuator, but it could be damaged inside too.

Jul 03, 2013 | 2007 Chevrolet Silverado 2500HD

1 Answer

Have 2005 chevy silverado stuck in 4wd-lo will not shift to 2wd all lights are out checked fuses are fine


If all the lights are out then the 4wd switch is bad but,if it won't come out of 4wd-low then the 4wd actuator is bad or stuck.The 4wd actuator is what engages the differential from 2wd to 4wd.HOPE THIS HELPS!!!

May 02, 2011 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Noise comming from transfer case on my 2007 chevy 2500 hd, was told at dealership that my steering box was bad, could that noise be from steering box, is box located in the same area as transfer case


No, the steering box is located in the left front and the transfer case is located in the center of the vehicle.If the vehicle has under 100,000 miles and it is the transfer case it should be under warranty.

Dec 15, 2010 | 2007 Chevrolet Silverado 2500HD

2 Answers

Replace lights in steering wheel control 2007


1-Pull the whole control out with a flat screwdriver 2-Twist out the bad light 3- replce with a new micro bulb
You can buy them here http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&Page2Disp=%2Finstrument.html

May 08, 2010 | 2007 Chevrolet Silverado 2500HD

1 Answer

Changing a hub assembly on a 2007 chevy


Put in tighten bolts. Each bolt little at a time moving equally between each bolt. You don't want to overtighten one bolt to much and cause it to go in at an angle. Be sure that it's tight. Air tools are the best choice but if you don't have any take time and use a braker bar to make sure it's good and tight.

Feb 21, 2010 | 2007 Chevrolet Silverado 2500HD

1 Answer

Wont shift from 2WD to 4WD. 4WD indicator switch blinks (light) but 2WD switch light never goes out.


check switch , fuse and relay if good check cable hoses and wiring at transfer are not damaged or disconnected -check actuator for proper movement actuator has a tendency to stick lube actuator rod if necessary

Oct 30, 2009 | 2005 GMC Sierra 2500HD 4WD

1 Answer

2007 chevy silverado 2500 hd duramax shut down


mo me it sounds like low fuel volume i would check my lift pump

Sep 30, 2009 | 2007 Chevrolet Silverado 2500HD

1 Answer

2002 Chevy Silverado 4wd 2500HD noise


probaly dont have a problem your truck probaly has a gas engaged 4 wheel dr modual and what you hear is the gas modual engaging

Apr 03, 2009 | 2003 Chevrolet Silverado 2500HD

Not finding what you are looking for?
2007 Chevrolet Silverado 2500HD Logo

Related Topics:

117 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8518 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...