Jump to content

where is my PCM?


Recommended Posts

I was thinking the other day that some of the engine noises I hear could be the result of using to low an octane gas if my "new to me" truck has a tuning chip installed. Where do I look to find the PCM(?) and verify if its stock or not? TIA

Link to comment
Share on other sites

Om your 2001 the PCM will be near the front of the engine compartment, left of the fan shroud. It is mounted in a plastic bracket and has a black plastic cover on it.

96-up trucks don't have a replaceable PROM/Chip and musted be tuned. You won't be able to tell by looking at it if it has been tuned.

Link to comment
Share on other sites

Om your 2001 the PCM will be near the front of the engine compartment, left of the fan shroud.  It is mounted in a plastic bracket and has a black plastic cover on it.

96-up trucks don't have a replaceable PROM/Chip and musted be tuned.  You won't be able to tell by looking at it if it has been tuned.

 

 

 

 

OK, Thanks 99. So if I wont be able to tell by just looking at it, then is there another way to tell if I've been "tuned"? I have an OBD II reader might that be able to tell me? Wouldn't a tune have some identifing mark?

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.