GMC Sierra 1500 shifting issues

5

Asked by Jun 06, 2017 at 02:30 PM about the 2009 GMC Sierra 1500 SLE

Question type: Maintenance & Repair

I have a 2009 GMC Sierra 1500 that has been acting weird lately.  When I
come to a rolling stop (Yield) or take a corner slower, when I hit the gas
after that, the RPM's will climb up, and my speedometer stays at 0.  If I pull
over, put the car in park, then back into drive, it goes back to normal.  
Sometimes I wont notice its doing this, then do another rolling stop, and it
goes back to normal

It also acts up in reverse, sometimes when backing up (like up a hill or in
mud or slush) the truck will feel like it kicks out, then it sounds like a
winding noise after that with the RPMS stick around 4k.  If I put it into park,
it goes back to normal.

Anyone ever run into something like this?

2 Answers

119,935

Check the transmission fluid level. You may want to change the ATF and the transmission filter.

5

I did check it last night, the color of the fluid was reddish pink, and it was filled to the correct line (checked both hot and cold). I hooked it up to a computer I have and a code came up for a transmission speed sensor fault. I do now notice that my cruise doesn't work also. Could this lead back to the sensor?

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