Trannsmission wont respond on engagement

Tiny
FURE UWAMU
  • MEMBER
  • 2005 CADILLAC SRX
  • 3.6L
  • V6
  • AWD
  • AUTOMATIC
  • 190,000 MILES
I drove the car for 300 miles and next day it will not respond when engaged on gear.
Computer test shows u1016 two times
And U1000 seven times.
At times the car moves when engaged but no for long (a few feet)
What can possibly be the solution?
Wednesday, March 29th, 2017 AT 6:09 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,465 POSTS
Both of those codes indicate that the Power-train Control Module cannot talk with some of the modules in the car. It is a pretty common code but it can be hard to track down at times. If you have access to or know a shop with a factory level scan tool they can go into the special functions and see which modules are/are not able to connect to the PCM.
The fix that gets tried first is to disconnect the battery, clean the connections and while it is disconnected you unplug/plug in each "bad" module to "clean" the pins. Then reconnect the battery and test it out. 90% of the time that does the trick. The other 10 percent you have a bad control module that will need to be replaced before the system works properly. In your case I would do the disconnect and clean and re-seat the connectors on the transmission and check for wiring damage as well.
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Thursday, March 30th, 2017 AT 3:31 AM

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