Question about Oldsmobile Cars & Trucks
When this code occours c1275 the pcm is requesting the ets to be disabled the trans stays in 2nd gear with codes po 753 po758 c1275 all speed sensors have been replaced the trans has been replaced question is do i have a bad pcm on a 2001 old alero with a 2.4 liter
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Posted on Jan 02, 2017
SOURCE: speed sensor location
Hi my name is Allen!
Both the Input and Output speed sensors or mounted on the side of the trans, they are not to far away from each other, you will see the electrical plug coming out of eack one of them. They are round, biege in color with a black end on it where the connector plugs into. If you don't know which one is bad you will need to replace them both.
For further assistance contact me at FixYa!
Posted on Jan 03, 2009
The output speed sensor is located on top of the transmission output shaft, this will send speed value to the transmission control module (TCM).
The vehicle speed sensor is installed on the differential of the transmission, and sends speed value to speed gauge on instrument cluster.
Check also IAC valve and look for vacuum leaks using an hand tool gauge(Vacuum Gauge and Fuel Pump Pressure).
Posted on Aug 19, 2009
Just ask for the 3,4 shift solenoid, in which case the transmission pan has to be taken off, the filter, and possibly the valve body to get at the solenoid, I don't have my manual right now, so I can't tell you which solenoid it is.
The speed sensor is usually screwed into the side of the tranny near the back end of it, don't confuse it with the back up light switch, that's screwed in somewhere in the center of the tranny. Hope this helped a little. Good Luck.
Posted on Oct 18, 2009
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