Why is the OBD on my Silverado Sierra not working?

The guy told me his computer can’t connect to the OBD for some reason, so he couldn’t pass me he said it might be a fuse or smth. Truck is 07 NBS Sierra CrewCab w/ 120 K miles. I checked the manual, but could not see anything in fuse section about OBD.

Where is the power on the OBD port?

The service manual says pin 16 is the power on the obd port,the schematic shows it is tied to the cig lighter port,the one on the right.It is hot all the time,where the other 2 power ports are only hot with key on. Yours is an 06,so may be different.Maybe a place to start tho. Good luck!!

Where is the 4WD control module located on a Chevy Silverado?

The 4WD control module is located deep within your dashboard, and is very difficult as well as expensive to replace. On occasion, they start to go bad, generally causing 4WD to not engage and without any codes being thrown. But if you are getting a code, the problem is still likely not your module.

Why is YouTube not working on my Chevy 1500?

An error occurred. Please try again later. (Playback ID: zcGiTsgPap8-Hv3P) Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

Why is the cruise control not working on my Chevy Silverado?

Open the fuse boxes and read the cover for fuse locations associated with cruise control. Fuses break due to age, but a blown fuse may also indicate a short in the wiring. Figure 1. A good fuse (on the left) compared to blown fuses (on the right).

Why does my OBDII port have no power?

Communication line does not provide the power. The power is pulled from the pos and neg ports on the obd ii. There is something wrong with your communication wire Communication line does not provide the power. The power is pulled from the pos and neg ports on the obd ii. There is something wrong with your communication wire Click to expand…

Where is the fuse for the OBD port?

I haven’t checked to see what fuse exactly, but normally a fuse for either the cig lighter, aux outlet or radio tie into the OBD ports power as well. would that fuse be in under hood fuse box? or side of dash inside the truck? I looked at the fuse list in manual, but did not see anything about obd… Thanks a lot! I’ll try and give a look soon.

What is the DTC code on a check engine light?

Diagnostic trouble codes (DTC) are automotive computer codes stored by the on-board computer diagnostic system (OBD) in your vehicle. There are literally hundreds of different codes a Check Engine Light can represent.

What are the symptoms of a bad Powertrain Control Module?

If your PCM is not functioning properly, your car may fail its emissions test, emit too much smoke, emit colored exhaust (white, blue or black, depending on the issue) and may smell like fuel. Jen Davis has been writing since 2004.

What are the symptoms of a bad throttle position sensor?

Symptoms Of A BAD Throttle Position Sensor (TPS) 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.

Why does my computer keep resetting on my Chevy Silverado?

Ans: You may have confusion about when you should reset the automotive computer of your Chevy Silverado. In a nutshell, if your car’s check engine light keeps coming on after the repairment, it suggests that the trouble code is still in the memory. And, you have to clear this code out of your car’s PC.

Why is the Check Engine light coming on on my Chevy Silverado?

In a nutshell, if your car’s check engine light keeps coming on after the repairment, it suggests that the trouble code is still in the memory. And, you have to clear this code out of your car’s PC. Having a car computer in your Chevy Silverado helps you in so many ways.