4w drive this is the code c0221
Have your speed sensors and circuits checked
SOURCE: My 1999 chevy blazer won't
the two plugs might be the ones connecting the wireing to the back of the 4WD pushbuttons panel.located to the right side of steering wheel on the dash. pry it out gently with a slim screwdriver.
SOURCE: i have a 2000 blazer
Hi, You will want to check for any trouble codes in the TCM, (tranfer case control module) to see where the problem might be.
Obtaining Diagnostic Trouble Codes
The
transfer case shift module is equipped with the ability to store
diagnostic information, which is useful to a technician in the event of
module., component or wiring failures. This information can be
retrieved from the transfer case shift control module by way of flash codes, which are displayed on the three transfer case shift control switch
buttons. These buttons are located on the instrument panel to the
right of the steering wheel Before obtaining DTC's perform the
following transfer case control module (TCCM) Self-Test.
TCCM Self-Test
DTC Displaying
Important: If the transfer case shift control switch buttons all blink only once and then stop, no fault codes are stored in the transfer case shift control module.
If
the TCCM will no communicate the presence or absence of DTC's, test
the above circuits in Self-Test Step 2. If the circuits are complete,
then replace the TCCM.
Let me know,if needed further assistance.
Hope i helped you.
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A code P0442 most likely means one or more of the following has happened:
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