Do I need to replace the 4 wheel drive switch?

Asked by Grouseman Nov 29, 2017 at 08:38 AM about the 1999 Chevrolet Silverado 1500 LT Extended Cab LB 4WD

Question type: Maintenance & Repair

When I press the Automatic 4 wheel drive it, the light flashes but nothing
happens. Same thing happens when I press the 4-high button.  However,
when I press the 4-low button I hear the front wheels try to engage but it
doesn't actually go into 4 wheel drive.  I also hear it disengage when I put it
back in 2 wheel drive.  I tested the switch and it all tested good except for the
4-high button.  Do I need to replace the entire switch?  Suggestions??

2 Answers
540

Eddie answered 6 years ago

There are 3 to 4 solenoids for the trans, and not unusual for them to go out. Check those out and you will probably find one that it is bad.

Mark helpful

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