Top 20 2005 GMC Sierra 1500 Hybrid Questions & Answers

Light on , DTC- diagnostic trouble code stored in the 4X4 control module . Take's a professional type scan tool to read these code's . Your best bet AAMCO . or dealer .

It ma be a bad connection. Check the battery terminals and the cable going to the starter. Make sure the terminals are clean, and the connection is tight. You may also have an alternator going bad.

as to abs your problem can be the hub itself not the sensor or even problem with abs control have it read to pinpoint problem most auto shops offer this service for free ---as to your 446 code the solenoid is not the only problem need to check the other possible not just change a part the following links should help you may fix problem by blowing out vent hose but sometimes its to late and the canister is filled with dirt [the hose is mounted up in rear wheel well where tires kick up all dirt and dust causing clogging ] P0446 Chevrolet Evaporative Emission Vent System Performance Quick fix for code p0446 evap emissions vent circuit low P0446 Chevrolet Evaporative Emission Vent System Performance

2 wheel drive check dif numbers or 4x4 if 4x4 check dif numbers 4x4 must be the same numbers

alldata.com or GM FSM> book

Sounds like the master cylinder is not releasing. Replace it

I need to know if the brake pedal gets tight or does the brakes get tight and slow vehicle down as if brakes are being applied.....If it is just the pedal getting tight and hard you have a vacuum Brake Power booster problem....If the brakes are locking slightly this could be a few different things......NEED MORE INFO..and Mileage....

These 4 things come to mind.. 1. do you use any gas additives? 2. when was the last time you had a tuneup (with wires and plugs)? 3 Do you get gas at a particular station 4. Possible clogged gas filter. This sounds like a "CAR TALK" question to click and clack. On most NPR stations nation-wide.. good luck.

HERE'S A LINK

The hybrib motor is the starter

It is located on the front of the engine.It has large hoses going to it.

In the Uk nearlly all trailor socket wiring is done from the rear light wiring of the towing vehicle so I suggest checking the wiring back from the trailor connection socket and also socket, it could be a broken or cut wire. Also will probably find your vehicle a control unit fitted the trailor socket which could also the problem. Find the pin outs for your turn signal on the socket and connect a bulb across this connection and the common earth to check its not a fault on your tralior.

Horsepower gains for 5.3 L or 4.8 L V8
Cold air intake. (5-15 horsepower)Such as Volant, K&N, Airraid.
Chip, programmer, or a custom tune.(10-15 horsepower)
Exhaust(Realisitcally 1-5 horsepower)
Headers(5ish horsepower)

Sounds like the oil sending switch is shorted out to ground,also could be broken or worn out.Its only a 5-10$ part.Unless you can test it.

Check under the hood to see if your throttle cable is stuck.

That is contained in the factory service manual, the manual is copyrighted and not available for a free access download.

Sometimes they fill with water or accumulate moisture. Life span varies on these things. Some last forever, some die in a few years. Seems to be a common GM problem

There is no such thing as a reset, if the light stays on a fault exists in the 4X4 control system, the control module has sensed that and turned the light on to alert you to the problem. It is likely that the power transfer case actuator motor is the problem or the wiring to it.

This transmission is shifted by a computer via electric solenoids that open and close hydraulic fluid pressure passages when signaled by the computer control, so any kind of a problem with the external wiring harness to the valve body or the valve body wiring harness or the PCM (powertrain control module can cause this symptom. The most common cause of your particular problem is a damaged open or shorted shift solenoid, this causes the transmission to go into two gears at once, the computer senses this and shifts the transmission to neutral to stop any damage to the transmission.

Check fuses, votage at motor wires and motor itself.Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer. Thank you for using FixYa, have a nice day.