How to check your GMC Sierra 1500 transmission?
An the TCC solenoid the signals from the power control model tells it when to shift check the Orange an yellow wire on the harness that connects to your driver side fire wall. 12volts to transmission to carry proper current 89 people found this helpful. Any questions or need of repair please call 5
Why is my GMC pick up not shifting?
Beside the CHECK ENGINE LIGHT (CEL) being on and driving you nuts, your Chevy or GMC pick up (or SUV or van) may be experiencing one or several of the following symptoms: TPS diagnostic trouble codes (DTC’s) stored in the vehicle’s computer’s memory. Really BAD gas mileage. Transmission does not shift out of second gear.
How to test the TPS sensor on a GM car?
In three simple test steps, you can find out if the TPS sensor on your GM car or pick up or SUV or Van is bad. You don’t need a scan tool, since all three of the tests explained in this article are done with a simple multimeter. Every test has step by step instructions that will make diagnosing the TPS on your GM vehicle a breeze.
How long has my GMC Sierra 1500 been sitting?
It has been sitting a year. She said years ago they had tranny trouble; it would stay in low. She took it to a shop where she said they cleaned a switch and reset the computer. After that it worked fine for a long time, then would intermittently have the same problem, then be fine.
Why does my GMC Yukon engine not start?
GMC Yukon: Engine Cranks → Won’t Start There are a lot of issues that can cause your Yukon to crank, but not start. The engine needs air, fuel, and a spark in order to run. It is highly likely that if the engine is cranking, but not starting that it has thrown an OBDII code.
What should I do if my GM TPS is not working?
Though this can happen to any car, many GM owners have reported such a failure. The TPS must be adjusted (rotated) so that it reads idle and full-throttle positions properly, or it may appear to be malfunctioning. Try adjusting the TPS before replacement to save a few dollars.
Can a bad check engine light be a bad TPS?
The check engine light will randomly turn on and off even if the car is running smoothly without any jerks and stalling. This is often the first ever symptom of a bad TPS. Using a code reader, you should be able to confirm whether a faulty TPS is the culprit or a different component.
Can a TPS sensor slip out of adjustment?
If GM TPS sensors have any inherent flaws, it is a tendency to slip out of adjustment. Though this can happen to any car, many GM owners have reported such a failure. The TPS must be adjusted (rotated) so that it reads idle and full-throttle positions properly, or it may appear to be malfunctioning.