oil sensor......late model help please..

[78Suburban]

My dad's 2003 tahoe with a 5.3 has some oil sensor issues. When the truck is off, the guage is sitting on 70, when you crank it, it briefly (like a half of a second) goes to about 50 pressure, then goes way off the scale past 80 psi. Is it more likely the sensor or the guage messed up? Any tips on how to fix it? where is the oil sensor located? thanks for the help.
James

 

[Thunder]

If the ignition switch is off and the guage is stiitng on 70 It is prolly a problem with the guage. It should read 0 with no power to it.

 

[84zz4ss]

Probably the guage itself. Seen way to many bad clusters in late model GM's.

 

[78Suburban]

yeah, it does it with the key out of the truck.... is replacing the guage a difficult task?

 

[78Suburban]

ttt

 

[readymix]

on a 2003 replacing hte cluster is easy. Should only take about 20 minutes.



But the catch is that you need to have the new cluster programmed to read the correct mileage.
Look on www.jpcustoms.com for a new cluster. They have them for $$ instead of $$$$$$ sometimes

 

[readymix]

Forgot to tell you:
Look in the garage sale section over there.

 

[78Suburban]

So its gonna be uber hard to do this on a budget I'm guessing.. you can't replace just one guage in that truck?

 

[84zz4ss]

Correct. The only servicable parts are a couple bulbs. You buy a reman unit and send your core back. But as readymix pointed out the cluster will need to be programed.

By the dealer.

 

[Jason4x4]

if i'm correct it doesn't matter where the gauge is with the key off, what you need to check is with the key on and the engine off, then it should be at zero