Let me repost this since I didn't get any answers. Feel sure someone on
here has had this problem before!
I have a 90 model K1500 chevy 4X4. The dash light that lights up when the
parking brake is applied keeps flashing on and off. It is at regular
intervals, just like a turn signal when it is on, and at about that speed.
Both brake lights are working and all other dash lights are working
Anyone have any ideas?
What other diagnostics have you done? Is the break mastercylinder
full? What's the owners manual say about that light flashing? Are there
any obvious leaks at the wheel cylinders? When was the last time you had
the brake fluid flushed, or system bled? Need more info. Could be a lot of
Master cylinder is full. Owners manual doesn't say anything about it, other
than what it is for. It still works right when I apply the parking brake,
just goes to flashing instead of going out when I let the parking brake off.
Recently replaced front brake rotors and pads, but had this problem before
that. System was bled at that time, but not what you would say flushed.
Master cylinder is full. Rear brakes were replaced about a year ago. It
has good brakes, with good pedal height, just the light keeps flashing.
There's a black plastic box with two connectors on it attached to the
bracket that the master cylinder attachs to. This is the RWAL control
module. Try unplugging the connectors for about 30 sec(key off). If
your light goes out, there's a problem with the RWAL. Drive it around
until the light comes back on and then take it to the dealer and have
them scan it for codes.
Old Crow "Yol Bolsun!"
'82 FLTC-P "Miss Pearl"
'74 XLH chopper(gone but not forgotten)
BS#133, SENS, TOMKAT, MAMBM
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