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03 Pontiac Aztek 3.4L

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New User

Oct 21, 2013, 8:36 AM

Post #1 of 3 (1227 views)
  post locked   03 Pontiac Aztek 3.4L  

03 Aztec 3.4L, 1st the speedometer does not work. 2nd Goes into drive just fine but will not shift as rpm and speed climbs. just revs doesnt shift. I just replaced head gaskets shaved the heads,replaced lower upper intake gaskets. I put everything back together and here is my issue. Now on top of the trannie is a large plug, is this what controls the speedometer and possable the shifting of the trannie. Thank you for your time, Ryan

ALSO There are no codes or error that come up with this issue

(This post was edited by ojo696 on Oct 21, 2013, 8:54 AM)

Ultimate Carjunky / Moderator
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Oct 21, 2013, 5:24 PM

Post #2 of 3 (1204 views)
  post locked   Re: 03 Pontiac Aztek 3.4L  

The large connector on the top of the transmission doesn't have anything to do with the vehicle speed sensor. That plug is for the solenoids, MVP sensor, and etc. inside the transmission.

The VSS is located on the passenger's side of the transmission where the CV axle plugs into the transmission's final drive cover.

If the PCM isn't seeing the VSS signal or the signal isn't correct, the transmission can't be shifted properly.

This should be setting trouble codes for no VSS signal. You'll need a scan tool to monitor the engine datastream to see what the VSS PID is reading.

Inspect your work. Make sure that everything is plugged in and your grounds are installed properly.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

New User

Oct 22, 2013, 4:53 AM

Post #3 of 3 (1181 views)
  post locked   post icon Re: 03 Pontiac Aztek 3.4L  

Thank you for your time! Problem solved!!

(This post was edited by Hammer Time on Oct 22, 2013, 6:27 AM)

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