Q: truck wont go into gear and you can move shift selector without depressing brakes

asked by on

I have been working to resurrect this suburban. I've got the engine running but when I went to shift there is no rise in RPMs and the truck does not go into gear. I have checked the linkage from the selector to the transmission and inside the transmission (the Chevy parts dept gave me a print out of the transmission and all the parts) and everything looks like it is there. When I use the brake pedal the brake lights do work. I did clean the electrical connections on the transmission side and checked all the fuses in the fuse panel.

When I put the key in and turn it to the on position, with or without the batteries connected, you can move the selector without using the brake pedal. I believe it may be a shift interlock issue but I don't know if it could be the solenoid or the transmission valves or where to start looking from there. Hoping for a direction to start looking or if the transmission can be fixed at all.
My car has an automatic transmission.

Hi Ryan. Thanks for sending us your question today. It really depends on the condition of the transmission as to what might be causing your problems If you are restoring a 1988 Suburban and have not rebuilt the trans, or had it rebuilt for you, then I would suspect that there is either debris stuck inside the hydraulic lines or a blown inner seal. When a transmission sits without being used for any longer than a year, the inner seals and gaskets can dry up quickly, crack and cause leaking once started again. I would suspect that this is the root source of your problem.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. truck wont go into gear and you can move shift selector without depressing brakes

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Oil Pan Leak

Be sure the leak is really from the oil pan gasket versus, say, the front or rear crankshaft oil seals (oil leaks at the front seal are common) or the oil pressure sending unit. If the pan gasket is the...

Q: Car won't start if I let it sit

Hello. It sounds as if you have a restricted fuel supply or contaminated gas. A trained technician will easily be able to pressure test your fuel system and inspect the quality of the gasoline. Also, I notice your car is...

Q: 1988 mercedes 420sel how do you self diagnostic check check engine light is on continually in the car

If the vehicle has an 8 (or 16) pin data connector, you can use a reader and refer to a MB Fault Code Manual for Model Years 1988-1997. The blinking codes are also documented in the Factory Service Manual (copies...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...