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92 Cutlass Applying Brakes Puts Car in Park

Old 01-21-2019, 11:02 PM
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Question 92 Cutlass Applying Brakes Puts Car in Park

Odd situation. My daughter called and said when she is driving and applies the brakes her Cutlass shifts to park. Any thoughts on this? I was thinking maybe the

Brake Transmission Interlock Solenoid BTIS? I haven't had a chance to drive the car yeat, having it towed over this weekend. TIA

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Old 01-21-2019, 11:37 PM
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Originally Posted by coxfamily21 View Post
Odd situation. My daughter called and said when she is driving and applies the brakes her Cutlass shifts to park. Any thoughts on this? I was thinking maybe the
Brake Transmission Interlock Solenoid BTIS? I haven't had a chance to drive the car yeat, having it towed over this weekend. TIA
So she'* driving along doing let'* say 30MPH or maybe 65MPH, and she presses the brake pedal, and the shift lever moves <click> <click> <click> into park like in Knight Rider when KITT is driving?

What does the car do at this point?

Not trying to be snarky, just trying to get a clear picture of this interesting issue.
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Old 01-22-2019, 09:05 AM
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I haven't had a chance to drive the car yet. Basically what you are describing is what she has described to me. Once I get the car to my house I will post more specifics, was hoping maybe this was a common issue that someone might be able to give me some guidance with..

Originally Posted by CathedralCub View Post
So she'* driving along doing let'* say 30MPH or maybe 65MPH, and she presses the brake pedal, and the shift lever moves <click> <click> <click> into park like in Knight Rider when KITT is driving?

What does the car do at this point?

Not trying to be snarky, just trying to get a clear picture of this interesting issue.
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Old 01-22-2019, 11:34 AM
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Common issue? Absolutely not!

I think you have a communication problem with your daughter......more likely the brakes are locking up.....
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Old 01-22-2019, 12:32 PM
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Originally Posted by coxfamily21 View Post
Odd situation. My daughter called and said when she is driving and applies the brakes her Cutlass shifts to park. Any thoughts on this? I was thinking maybe the

Brake Transmission Interlock Solenoid BTIS? I haven't had a chance to drive the car yeat, having it towed over this weekend. TIA

Wait until you can confirm what is actually happening. It'* not doing what you think.
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Old 01-23-2019, 06:51 AM
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I agree, confirming the symptoms first. It could also be a sticking brake.

I am anxious to hear what it is actually doing however.
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Old 01-26-2019, 05:18 PM
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While at low speed you apply the brakes and the car lunges to a stop. Car will then reverse, but will refuse to move forward. Transmission, brakes?


Originally Posted by rjolly87 View Post
I agree, confirming the symptoms first. It could also be a sticking brake.

I am anxious to hear what it is actually doing however.
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Old 01-26-2019, 06:06 PM
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I would be jacking it off the ground at this point, and seeing what it does with wheels in the air. If it'* brake(*), it will be limited to one wheel. If it'* drive train related, that too will be apparent. Also pull the wheels off, and look for apparent brake issues anyway. .
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Old 01-27-2019, 10:47 AM
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I agree....

Have you checked brake fluid? Level and color?

But when you apply brake and the car lunges to a stop, do you hear the ABS activated?

Do this in a safe area with no cars around....

Take vehicle where there is a hill.....drive down the hill and apply brakes.....if it lunges to a stop, with brakes applied, shift into Reverse.....now if it moves backwards up the hill, just let vehicle come to a stop on it'* own(without applying the brakes)....now shift into neutral......does care go down the hill? If yes, then apply brakes.....does it lunge to a stop? When you release brakes, does the vehicle move?

If car moves, with brakes applied, shift into drive.....go down the hill.....hit brakes...does the car lunge to a stop? When you release brakes does it stay locked or go down the hill?

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Old 01-27-2019, 07:18 PM
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Originally Posted by coxfamily21 View Post
While at low speed you apply the brakes and the car lunges to a stop. Car will then reverse, but will refuse to move forward. Transmission, brakes?
This is a weird one.

What the other guys said above ^^^^^ plus:

I am assuming you are doing this while in Drive in an empty parking lot or in your own private test track on the straightaway.

How hard are you applying the brakes in this scenario (lightly, moderately, firmly, panic)?

The car lunges to a stop, where is the gear selector located at this point?

Now you let off of the brakes completely. Does the car move on its own without adding any throttle or does it sit there absolutely still forever?

When you put it in Reverse does it start moving backwards with no throttle input?

When it starts moving in Reverse are there any sounds that are associated with start of motion?

When you gradually come to a stop in reverse, does it lunge to a stop?

Can you now select Drive and drive forward?
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