Anonymous Posted on Nov 15, 2017

1989 chevy 2500 4x4 engaging problems

I have a 89 chevy 2500 and the 4x4 wont engage. Im a mechanic myself and have installed a new front diff and transfer case actuator, however all it does is the transfer case lights flash as i drive in 4x4 hi or low. And the light flashs slow when puting around town or fast wen going 50. Im stumped. Maybe wiring short? Thanks Josh

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spank61

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Posted on Dec 30, 2017

spank61

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Control module behind the passenger side kick panel

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Anonymous

86 Answers
Posted on Nov 24, 2008

SOURCE: rear diff noise

We have to be sure where the noise is coming from, a advise you or ask someone to do the following tests:

jack your both your rear tires and make sure its stable. turn your tires either manually or by shifting gear into reverse and try listening to any humming or whiny sound or vibration not only from your rear differentials but also your transmisssion and independent transfer case.
Be sure it secured and will not move and will not squish you under.
also check on your rear propellers, differentials for excessive play
If you determined where it is coming from, check on your gear oils.

My own assesment from what you have just told us, is I would also check on your clutch system, because whiney noise only exist when you are backing up the car. I hope you would pin point which part is causing the whiney noise to save you all the headache of having it repaired.
Comment after you determine where it is coming from.
Thanks for dropping by fixya

Anonymous

4 Answers
Posted on Feb 07, 2009

SOURCE: my 2000 blazer won,t select 4wd hi/low or auto

there is a vacuum solonoid on the firewall in the middle with 2 vac lines and a 2 wire plug
thats ur problem
push the button and smack it with the handle of a screwdriver should work

Anonymous

19 Answers
Posted on Mar 07, 2009

SOURCE: 4x4 wont engage front wheels

check switch or sensor on transfer case

Anonymous

400 Answers
Posted on Jul 12, 2009

SOURCE: S-10 Blazer 4wd problem

www.amazon.com/Chiltons-Repair-Manual.../0801981425

Hope this helps you

Anonymous

1 Answer
Posted on Sep 28, 2009

SOURCE: I have a 1990 K1500 4X4 Chevy pickup that wont

I had the same problem on my 90 K1500, it was the 4 wheel drive actuator unit itself. Bout it at the local parts store for 30 bucks and installed it in 10 minutes or less - and vavoom! 4 X 4 back in business.

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1988 K2500

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1998 Chevy K1500 4wd with push button on the dash. switch lights blink, transfer case engages and front drive shaft cannot be moved by hand but front diff NOT engaging.

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