Question about 2004 Chevrolet Tahoe

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04 tahoe z71 the allwheel drive,2wheel drive,and 4hi,4lo buttons don't alwas work sometimes it's in 2wheel drive then go to 4lo and when i push the 2wheel button it just blinks and the 4lo button stays on but it's not in 4lo it's in 2wheel drive and the dash information says "service 4 wheel drive"

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  • Chevrolet Master
  • 15,575 Answers

Your best bet , take it to a qualified repair shop . Service 4X4 light's blinking . DTC'S - diagnostic trouble code's stored in the 4X4 control module.

Posted on Jan 22, 2018

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6 Suggested Answers

6ya6ya

6ya staff

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Posted on Jan 02, 2017

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Anonymous

  • 1 Answer

SOURCE: 4 Wheel drive not engaging.

After finding a vacuum line that was off from the auto body shop that never was reconnected , after they removed it when they replaced the left side fender from a crash. Reconnected it and now it works. It was hard to find. Due to it is located below some other componets and wires.

Posted on Dec 29, 2008

Anonymous

  • 6 Answers

SOURCE: s10 pickup 4wheel drive wont shift from 4hi to 2hi

Mine is on the front drivers side, is yours? I just about fell over when I discovered who they designed it!

Posted on Jan 01, 2009

dennymulford

Dennis Mulford

  • 1055 Answers

SOURCE: 98 K1500 suburban, can not engage 4wd, HI or Lo runs otherwise

your doing it right but your accuater is bad 59.00 auto zone easy install

Posted on Feb 23, 2009

Anonymous

  • 366 Answers

SOURCE: selector switch stuck in 4lo

pull 4wd fuse inside fuse panel and atc fuse from underhood fuse center, truck wil go back to 2wd,check control box behind pass.side kick panel ,elect. connector at box,full of corrosion will cause weird 4x4 problems!

Posted on Mar 28, 2009

Anonymous

  • 1 Answer

SOURCE: service 4wd light

what causes the 4wd to kick in when you have it in 2wd

Posted on Apr 05, 2009

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04 tahoe z71 the allwheel drive,2wheel drive,and 4hi,4lo buttons don't alwas work sometimes it's in 2wheel drive then go to 4lo and when i push the 2wheel button it just blinks and the 4lo button stays on...


Pulling code's from the 4X4 control module would point to a diagnostic procedure . Do you own a professional type scan tool that can read DTC'S - diagnostic trouble code's in the 4X4 control module ? Autozone , advance etc.... can not read these code's .
Which transfercase does it have ?
Transfer Case - BW 4482-NR4
Transfer Case - NVG 246-NP8

How many buttons for 4X4 three or four ?
The BW 4482 transfer case features a 3-button shift control switch located on the instrument panel
The NVG 246 EAU transfer case features a 4 button shift control switch located on the instrument panel
When the ignition key is in the RUN position, the transfer case shift control module monitors the transfer case shift control switch to determine if the driver desires a new mode/range position. At a single press of the transfer case shift control switch, the lamp of the new desired position will begin flashing to inform the driver that the transfer case shift control module has received the request for a new mode/range position. The lamp will continue to flash until all shifting criteria has been met and the new mode/range position has been reached, or has been engaged. Once the new mode/range position is fully active, the switch indicator lamp for the new position will remain ON constantly.The 4X4 system with four button shift control can set a number of DTC'S
DTC B0790
DTC B2725
DTC C0300
DTC C0305
DTC C0306
DTC C0321
DTC C0327
DTC C0359
DTC C0374
DTC C0379
DTC C0550
The three button switch can also set an store a few codes
DTC B0790
DTC B2725
DTC C0306
DTC C0327
DTC C0329
DTC C0359
DTC C0550
Without knowing if any of these DTC'S are stored can't suggest any type of repair .

Dec 29, 2017 | 2004 Chevrolet Tahoe

1 Answer

How to put into 4x4 hi ?


If its a 4WD there is either a push button on the dash left side of steering colomn, its marked 4hi. If manual shifter in on floor center console. Pull back on lever to second notch marker 4hi. If you are in 4lo now and can't get out. first put tranny shifter in neutral while engine running, then shift transfer case into neutral (manual push forward), push button hold 4hi and 4lo at the same time til "N" green light comes on. Then shift either into 4hi.

Jan 27, 2011 | 2001 GMC Yukon

1 Answer

04 Z71 4wd problems


can you hear the shifter motor trying 2 shift? if not its the shifter motor open the door and try 2 listen when your trying 2 shift it

Feb 13, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Electronic tranfer case switches are not working, what could be the problem? The vehicle is in 2 wheel hi now and when I push the 4 hi button nothing happens...when I start the vehicle, all three switches...


check the trasfercase shift control module and wiring
it's located on the passenger side
remove the carpet thresh hold
remove the kick pannel they are held on by clips
the module is behind the kick pannel
disconnect the module harness and see if it is corroded if so you need to replace the connector and the module
let me know if thats not it but i have done lots

Dec 23, 2009 | 1997 Chevrolet S-10 Pickup

1 Answer

4hi and 4lo lights flash but wont stay on


must be in neutral to go in 4lo. ther is a valve under the scatter shield under the motor, check that

Sep 17, 2009 | 1996 Chevrolet K1500

1 Answer

4HI and 4LO light flashing 2000 Blazer LT


it is very possible that a wheel speed sensor is open or reading erratic, causing the ECM to override the 4WD switch. Borrow/rent/buy a scanner that will tell you this info,

Jul 15, 2009 | 1997 Chevrolet Suburban

1 Answer

Chevrolet truck 4wd switch blinks


If they are blinking I believe it means that there are fault codes present in the pcm. You need to get the computer scaned to see if there are an codes present. If you live near an Autozone or Checker autoparts they can scan it for free.

Jun 21, 2009 | 1996 Chevrolet K1500

1 Answer

98 K1500 suburban, can not engage 4wd, HI or Lo runs otherwise


your doing it right but your accuater is bad 59.00 auto zone easy install

Feb 23, 2009 | 1998 Chevrolet Suburban

2 Answers

4wd stuck in 4Lo


it is either the control switch or the actuator. look if light is flashing on push button switch. if so it is stuck. you can check actuator on front axle, to watch and see if it is moving.

Dec 06, 2008 | 2001 Chevrolet Tahoe

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