Question about 1986 Chevrolet S-10 Blazer

1999 Chevy 4wd silverado 5.3l

4wd hi will not disenguage. The Switch on dash say its in Auto drive not 4HI. What sould I do to fix this. I had transfercase surviced and it is fine. Its either the Actuator or the Actuator Switch, right? Which is more likely and how will i know? thnx

1 Answer

Mike Abrams

Level 1:

An expert who has achieved level 1.

MVP:

An expert that got 5 achievements.

Governor:

An expert whose answer got voted for 20 times.

Hot-Shot:

An expert who has answered 20 questions.
Contributor
23 Answers

I had the same issue with my truck, the switch was the problem.

I solved my issue by process of elimination which started with the switch,,, easiest thing to replace first.

Posted on Apr 05, 2009

Add Your Answer

Upload

Upload an image from your computer

Uploading: 0%

my-video-file.mp4

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

Loading...

Include an image. It's worth a thousand words.

prev next

Related Questions:

2 Answers

How do I put my Chevy trail blazer 2005 LS in 4 wheel drive

look on the dash for a 4wd button or switch. may be located between the steering wheel and the radio. when you turn the knob to select 4hi, 4lo, 2hi, or auto, the indicator light above the corresponding selection will flash until the shift has completed. if the light stays flashing there is a fault in the 4wd system

Mar 20, 2018 | 2005 Chevrolet TrailBlazer

1 Answer

I have a 2004 Silverado. 4x4 works when the temp outside is warm... But not when cold. Buttons on the selector don't do anything most of the time. Light is on for auto 4wd but it's not engaged. When i...

4wd switch mounts to tranny around 70 bucks,takes about 5 minutes to change

Nov 17, 2014 | 2004 Chevrolet Silverado

1 Answer

My 99 silverado 4x4 is stuck in 4LO. When I push 2wd, 4wd auto or 4HI it cycles through and returns to 4LO. I have replaced the shift module behind the dash, switch on the dash, transfer case shift motor...

You have to put the truck in neutral first then switch the 4hi and don't use the auto select. If it still won't switch you may have damaged the servo and need to replace it. Or worse damaged the transfer case. So try in neutral first and hope that works.

Feb 07, 2018 | Cars & Trucks

1 Answer

I recently purchased a 1999 Chevy Blazer 4WD LT with the 4WD AUTO 4 switch push button. We picked it up cheap. We now know why... 4WD dash switch is dead, changed it with a used one lights flash and n

Sounds like the encoder switch is bad ..it on the transfer case .it has a motor with wires going to it.when you press the button it sends a signal to that motor to switch into a certain gear..

Apr 21, 2012 | Cars & Trucks

1 Answer

4wd Problem

i think your anti lock/traction control system will cause this. does you truck have these options?

Dec 17, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

I was driving down the road and my 4WD HI light started blinking today on my 1997 Chevy 1500. If I put it in 4 LO the 4 HI light quits blinking and the 4 LO light comes on Press the 2WD button and the 4HI...

check switch connections,fluid level and actuator at transfer case if good have truck scanned for possible trouble code possibleas sensor or component going bad , some auto stores such as auto zone /advanced auto do it for free if theres a trouble code it will be a starting point

Oct 29, 2009 | 1999 Chevrolet Silverado 1500

4 Answers

The Service 4wd light used to go on and off

Drive in circles, one direction then the other and it should come out...Gears get preloaded and will remain so until this load is released...

The engauge/disengauge control does not have power to overcome gear preload.

Doc

Sep 21, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

1999 Blazer AUTO 4WD stays lit up in ALL transfer case modes! WHY

the transfer case module is bad it is bolted to transfer case above front drive shaft

Aug 21, 2009 | Chevrolet Suburban 1500 Cars & Trucks

1 Answer

96 chevy 4x4. no ind lights. stuck in 4hi

Replace the selector switch assembly. Common failures.

Mar 27, 2009 | 1999 Chevrolet Silverado 1500

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