Mechanics

99 4 WHEEL DRIVE LIGHTS FLASH AND WILL NOT ENGAGE. I ALREADY REPLACED ACTUATOR AND SELECTOR SWITCH ON DASH.

1999 Chevrolet Silverado • 154,000 miles

99 silverado 4 wheel drive lights flash and will not engage. I already replaced actuator and selector switch on dash.
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Pointer
January 30, 2012.



Is the actuator getting POwer? Is the switch getting power.

Hmac300
Jan 31, 2012.
Yes to both. But I dont know on what pins (4 total) should have power or when to the actuator. Ordered a Dorman 600-901 4WD Transfer Case Shift Motor Encoder last night. Could this be the problem? If not its returnable. Thanks

Tiny
Pointer
Jan 31, 2012.
Thoseare teh number 1 cause of your problem. If you really need the schematic I can send it later just let me know

Hmac300
Jan 31, 2012.
"those are the number 1 cause" do you mean the actuator or the encoder?

Tiny
Pointer
Jan 31, 2012.
Encoder motor. I'll send you the schematic later so you cancheck both though

Hmac300
Jan 31, 2012.