Transmission help

[Wave]

2007 pontiac wave no reverse light. Transmission will stay in first until I park and go back to drive. Check engine light.po700 any help is greatly appreciated

[Wave]

Its the same as aveo it's a Canada only car

[avguy]

First thing to try is disconnecting and examining the TCM connector for corrosion. This was reported in a prior thread to fix someone's A/T Aveo problem.

If that doesn't help, then find a shop with a reader capable of reading TCM codes. (hopefully as a minimal cost or N/C) The P0700 is a generic code which indicates specific TCM codes have been set, and those codes often point directly to the specific problem.

[06T200]

So you say the reverse lights are NOT working? This may be a big clue it is a dirty connector. Chime back in if you still have not resolved, or if you see the U0100 code as well.

[Wave]

I have the po705 which is the trans range sensor. I've gone ahead and ordered a neutral safety switch which in turn is a combination of sensors. I hope when I install and clear codes it will solve the problem. ($300 cdn).will keep you posted on the results

[avguy]

Wow, they clip you good - where did you order from? Did you try disconnecting it and check the connector/wiring?

[Wave]

I haven't tried that. I ordered from Canadian tire. Comes with year warranty. I will try the connections after work tonight

[Wave]

Sorry for the leave of absence. Had to stick up for my wife and wound up in jail.

So,I've replaced the switch and nothing. Money well wasted lol. I blew my rad so that will need to be replaced. So I have it parked now and decided to figure out why the Sun roof won't function. After using a volt meter I was confused. So I'm in the car and I'm trying the air conditioning out and my buddy comes in so I showed him what I'm working on as I press the sunroof button it works.so it only works with the fan is on and my running lights come on too .strange???? I'm thinking it all may be related

[Wave]

Any help? Need the car to pass emissions

[06T200]

You listed quite a few issues, not sure where to start, what codes do you see , is it running at all now?? TCM still throwing 705? If you are tackling the trans I would check the connectors and grounds, any that feed the TCM.