Why is my test light not working on my GMC Sierra?

Why is my test light not working on my GMC Sierra?

Of course it would cause it to quit, the test light would pull the data line down and kill communication. Of course they couldn’t read it with a scanner when it wasn’t working, there was no communication on the Class2 data line. This isn’t something you’re going to fix poking and prodding, and you may even do more damage.

Where are the lights on the dashboard located?

Most vehicles have a dashboard lights control switch that will dim the dashboard lights, as well as turn them off. Check the control switch, which should be located on the console near the steering column or part of the headlight switch. Tail lights and dash lights are connected through the tail light (and/or brake light) fuse.

Is the four wheel drive light on on my GMC 2500HD?

I have a 2007 gmc 2500HD. The service four wheel drive light is on and the four wheel drive will not engage. What could it be Clicking this will make more experts see the question and we will remind you when it gets answered. You can’t post conmments that contain an email address. An expert that got 10 achievements.

Why does my Silverado Sierra not have a radio?

The dead giveaway would be a full vehicle scan with an uplevel scantool and if there are multiple history codes for loss of communication between the modules. Other problems I have seen is a corroded connector on the ABS module, corroded wiring in the rocker sill harness, rodent damage, and even faulty radios.

Of course it would cause it to quit, the test light would pull the data line down and kill communication. Of course they couldn’t read it with a scanner when it wasn’t working, there was no communication on the Class2 data line. This isn’t something you’re going to fix poking and prodding, and you may even do more damage.

Most vehicles have a dashboard lights control switch that will dim the dashboard lights, as well as turn them off. Check the control switch, which should be located on the console near the steering column or part of the headlight switch. Tail lights and dash lights are connected through the tail light (and/or brake light) fuse.

How did I get the radio back in my Silverado Sierra?

Took instrument cluster out and since it was easy took the radio out. Cleaned all connections checked all wires put dielectric grease on everything plugged it back in and everything worked. It’s been two days and so far so good. Well I spoke to soon. Quit working again.