new transmission on gmc sierra 1500 speedometer problems?

Question

installed and speedometer and odometer dont work now took it back to tech he changed the speed sensor twice and followed all wires back up to but not behind dash and couldn' t find any thing wrong any one with any ideas

Answer 1

Since the transmission was the only thing changed before the problem came up, I would check inside the transmission where the sensor screws in. If the transmission came from a previous year model that did not have an electronic speedometer, there will be nothing in there to make the sensor work.
The sensor is basically counting teeth on a gear and converting it to MPH. If the gear is a bevel gear to drive a cable, the sensor cannot count the teeth.

Answer 2

examine your transmission fluid point. It grew to become into very effortless for maintenance techs on those Saturns to mistakenly drain the transmission, extremely than the engine, while doing an oil replace. the reason of that's a mixture of inexperience, besides as ,once you're under that vehicle and finding up on the engine and transmission, your transmission takes a clear out that looks precisely like an oil clear out. I somewhat have considered many many commonplace service techs see the clear out on the transmission section and assume it is the engine, and pull the drainplug on the transmission. The oil clear out is somewhat hidden above the force axle, and is very small. it is maximum probably, somebody pulled the incorrect drainplug, and extremely than fess up, they placed the plug back in and sent you on your way. If this is not any longer the case, AAMCO starts at approximately 1783.00 for a base overhaul, and from there, relies upon on what difficult areas could desire to get replaced. many times finally ends up around 2500.00 with a three 300 and sixty 5 days/50k guarantee. i could examine the transmission fluid point in the previous using it, and additionally call the save that replaced your oil. i think of your subject would be fastened with some quarts of transmission fluid.

Answer 3

make sure one of the wires on the speedometer the goes down to the speed sensor has power on it,those are very aggravating to repair when they go out i have one now working on it,that was working fine,and now it wont do nothing ,your doing to right things you,ll eventually find it,good luck with it.