I just got back from the auto part store with some rather confusing trouble codes. I hope someone can help me diagnose these issues. For reference my car is a 1995 LT1 6 speed. I appreciate any help.

11 Malfunction Indicator Lamp Fault

91 Shift Light Fault

97 4K Pulse per Mile Fault

I did recently start the car with the guage cluster removed.

 

That's why you got the codes because the cluster was removed and you started the car. The codes will go away when you put the cluster back in or disconnect the battery for 5 min.

 

Even after you put the cluster back in, you have to "clear" the codes, or they will remain stored in the PCM for a specific number of drive cycles, then self clear. You can clear the PCM by pulling the "PCM BAT" fuse for 30 seconds..... no need to disconnect the battery.

 

So, all three of these codes came from the cluster being removed?

 

That's what they are trying to tell you.

 

Thank you for your help. I guess I will just pull the fuse for a couple minutes now that I have re-installed the cluster. Everything should be all cleared up. Thanks again.