20 Most Recent 2006 GMC Sierra - Page 3 Questions & Answers

po463 refers to fuel tank level sensor--high input===causes wiring short to positive--fuel tank level sensor---ECM check tank wires and replace the sensor

do you beat this truck, four wheel alot, sounds like one of the axles is broke

Switch sticky or bad
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Always refer to your owners manual, but if there is no key switch in the glove box, you probably have the sensor system which monitors weight in the passenger seat. If you have more than 30lbs in the seat the airbag is "on" and the sensors are activated. Otherwise the passenger side is off if the seat is empty.

Are you sure the AC has a refrigerant charge in it, and that it hasn't leaked out? Have that checked first.

Unhook battery wait a few minuites reconnect battery should reset computer codes to allow you to get it to a repair shop.

mode selection motor on drivers side of hvac housing goes bad.

check the injectors for those cylinders for blocked tips that require extra current to allow the fuel through.

5.3 and 4.8 holds 6 qts .

try changing you transmition fluid and its filter first , if this doesn't in prove your bands in auto trans may need servicing or you may have faulty gear solenoids .you fluid should get higher as gets hotter this is normal , always check fluid after driving , do not over fill this is just as bad as underfull.

First check that the blower has power to it and when turned on a varying ground signal when the speed switch is moved between the speeds. You will need a DVOM to test this.

30 MINUTE RELEARN PROCEDURE

1. Turn ON the ignition, with the engine OFF.
2. Attempt to start the engine, then release the key to ON, vehicle will not start.
3. Observe the SECURITY telltale. After approximately 10 minutes, the telltale will turn OFF.
4. Turn OFF the ignition, and wait 5 seconds.
5. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.
6. Important: The vehicle learns the password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
7. Start the engine. The vehicle has now learned the password.

Ignition modules are pretty common on the 4.3 liters. Some things I would check are spark at the coil, power to the coil, pulse to the coil, and injector pulse. If you have injector pulse but no pulse at the coil chances are the module is the issue. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Sounds like the blower switch is shorted. Try running through the blower speeds to see if that changes anything.

I have the very same problem, no seat heat on either side and no power seat control on the drivers side. anyone know which fuse or switch operates the drivers side power seat? Thanks