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My 07 duramax has 2hi and 4lo nothing happens when I push
My 07 duramax has 2hi and 4lo nothing happens when I push the 4hi button. … read more
Eric
Eric
Retired
N/A
33,614 satisfied customers
Service 4WD message is on...? Won't engage in 4WD Lo --
Service 4WD message is on...? Won't engage in 4WD Lo -- light just blinks and stays in 4WD Hi? … read more
Todd Audette
Todd Audette
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Vocational, Technical or Trade School
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I have a loud clunk coming from the differential area when I
I have a loud clunk coming from the differential area when I shift in and out of reverse and the characteristic shuddering at higher speeds. The last time I drove it I had to turn my selector to 4hi a… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
10,851 satisfied customers
1998 Ford expedition was commanded by it's self to egage
1998 Ford expedition was commanded by it's self to egage into 4x4 low. I can not manually command it out. I metered the 4x4 mode switch and replaced the GEM … read more
Tim Mohr
Tim Mohr
SHOP OWNER
Master's Degree
16,172 satisfied customers
Stupid push button 4x4 will not engagenow. Great, little
Stupid push button 4x4 will not engage*****now. JA: Besides this, what condition is the car in? Customer: Great, little body rust. JA: What is the model/year of your Chevy? Customer: 1994 chevy s-10 b… read more
Pete
Pete
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General auto certifications
29,945 satisfied customers
I can not get the 4x4 to actually engage on my 2000 Blazer.
I can not get the 4x4 to actually engage on my 2000 Blazer. … read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,945 satisfied customers
I have a 2000 S10 4x4 with engine not running key on
I have a 2000 S10 4x4 with engine not running key on transylvania in neutral I can push the 4 hi button and hear it in gauge also 4lo and back to 2hi however with pickup running operating in normal dr… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
1,963 satisfied customers
On my 1998 Blazer I can't get the truck out of 4WD. When I
On my 1998 Blazer I can't get the truck out of 4WD. When I press the 2WD HI button I can hear something click behind the passenger side kick panel - not sure if that is a relay or if it the module tha… read more
Tim's Auto Repair
Tim's Auto Repair
Mechanic
High School or GED
513 satisfied customers
2004 suburban 4x4. Transfer case is grinding when I shift
2004 suburban 4x4. Transfer case is grinding when I shift the transmission from drive to park and I have no forward movement or reverse in any head. Transmission is brand new. It ha electric shift and… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
408 satisfied customers
Just replaced 4wd module and vacuum actuator will not shift
just replaced 4wd module and vacuum actuator will not shift into 2wd or 4wd had trans fluid in vac line actuator fell apart in my hands the dash switch was flashing and going dark. Now still dark and … read more
sprinkles08
sprinkles08
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High School or GED
18,074 satisfied customers
The 4w drive does not seem to be working in my 1990 k2500
Customer: I'm Zac, and the 4w drive does not seem to be working in my 1990 k2500 … read more
Gary
Gary
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Vocational, Technical or Trade Scho
408 satisfied customers
Ok. I have a 1999 3/4 ton Silverado with a 4WD issue. The
Ok. I have a 1999 3/4 ton Silverado with a 4WD issue. The switch lights come on "sometimes" and work. But most of the time they only flash briefly when I turn the key, then they go out leaving me with… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
1,963 satisfied customers
I hav an 'o3 Isuzu Rodeo that is locked into 4wd and the
I hav an 'o3 Isuzu Rodeo that is locked into 4wd Hi and the selector switch is in 2wd. I can hear the actuator moving when i move the switch into 4L. It goes into 4wd on its own, intermittently and us… read more
Tim's Auto Repair
Tim's Auto Repair
Mechanic
High School or GED
513 satisfied customers
Chevrolet Tahoe Z71: camOk so I have a 2004 chevy tahoe
Ok so I have a 2004 chevy tahoe 4hi won't engage but 4lo will the lights on the switch act as they should and even when I switch it to 4hi… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
408 satisfied customers
Sequoia: I have a 2005 Sequoia sr5 with over 250k miles on
I have a 2005 Sequoia sr5 with over 250k miles on it. Up to this point it has been the most reliable car I have owned. Yesterday the wife tried to engage the 4wd (we had snow, and a lot of it) in orde… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
29,945 satisfied customers
Chevrolet K2500 4x4: I have a obs 99 K2500 with push button
I have a obs 99 K2500 with push button 4wd. It will shift into 4 lo but not 4 hi. When it first started both 4 hi and 4 lo wouldn't work but now I have 4 lo but not 4 hi.… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
1,963 satisfied customers
1996 Blazer 4WD Issue:(4.3L equipped w/electronic dash
1996 Blazer 4WD Issue: (4.3L equipped w/electronic dash controls & auto. trans.) Symptoms: > 4WD button flashes twice when pushed. 2WD button then re-illuminates. > Same thing happens when 4WD L… read more
Jerry
Jerry
Service consultant
Vocational, Technical or Trade Scho
13,107 satisfied customers
Chevrolet Silverado 2500 HD LT: Hi Jazz: I'm working on my
Hi Jazz: I'm working on my 2002 Chevy Silverado 2500HD Diesel 4WD. It runs fine in 2WD. When I push the 4WD Hi button all of the lights on the selector switch blink and 4WD doesn't engage. I've change… read more
EricFromCT
EricFromCT
Auto Technician
4,535 satisfied customers
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Meet the Experts:

Chris (aka- Moose)

Chris (aka- Moose)

Technician

1,963 satisfied customers

16 yrs. experience with auto, manual, & CVT drivelines

Tim&#039;s Auto Repair

Tim's Auto Repair

Mechanic

513 satisfied customers

I have been rebuilding automatic transmissions for 25 years

Gary

Gary

ASE Certified Technician

408 satisfied customers

25 years GM master tech

Matt

Matt

Engineer

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Mechanical Engineer BEng Hons22 years experience in car engine industry, 10 years in formula 1

Mike Kelly

Mike Kelly

ASE Certified Technician

150 satisfied customers

17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.

Dave Nova

Dave Nova

ASE Certified Tech

98 satisfied customers

ASE Master Certification. 25 yrs experience

Marty

Marty

Bosch Certified Technician

94 satisfied customers

Bosch certified master technician. Over 35 years experience.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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