By chance did you ever figure that electrical problem out I have an 03 gmc doing the same exact thing and help would be great!

 

I just bought a 2000 Silverado same issue. I just put a small jumper wire on the code reader connector pins that are closest together and it works fine. I will further diagnose the issue tomorrow and post results.

I just bought a 2000 Silverado same issue. I just put a small jumper wire on the code reader connector pins that are closest together and it works fine. I will further diagnose the issue tomorrow and post results.

Following this thread. I have same issue

 

4 year old thread, and neither poster has returned since then. You are unlikely to get a response from either of them.

 

Oh, you connected two pins on the OBDII connector, and that resulted in the IP getting a power or ground connection that it wasn't before... It kind of sounded like you were getting OBDII codes on the IP by connecting two pins together (which worked on earlier trucks, but doesn't on GMT800s).

I would suggest finding where the real problem is, as the wires to the ODBII connector weren't designed or expected to be carrying that power to the IP.

 

Yes sir. I’ll do some digging around and see what’s the root cause of this.
Also I don’t know if it’s worth a mention but if I have just the cable from a code read plugged in….the cluster works fine. (Just the cable without code reader)

 

I got a problem with a 2000 Chevrolet Silverado. Dashboard light don't came on. But when I hook my ob2 code reader and my dashboard lights came on. That's one of my problem. My next problem I put a 2004 5.3 Chevy Silverado in two a 2000 Chevy Silverado. I'll turn the switch on I don't got powder to it .I'll go under the truck and I can turn it over with my starter. Need help on this been working on this 4 days

 

Most likely the problem is the larger wires where they are soldered into the cluster. Pull the cluster, used a hot iron and touch each of the terminals and add a bit of fresh solder. You can usually see the terminals with the problem, as there is a ring around the wire in the solder. Easy job.

 

Okay I'll tried that and I'll let know how that work out thank u

 

The problem is the black wire with white stripe next to all black wire. Run a lead wire from black wire with white stripe to metal part of dash with self tapper and wire end. On the OBD II port. Thank me later!

 

Or just check the ground off the engine..