Question about GMC Cars & Trucks
Try these hacks. If they don't work, a dealership has all the codes, and there is a website that sell radio codes based on serial number.
unlock 07 gmc sierra z71 radio Google Search
Posted on Dec 12, 2016
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Posted on Jan 02, 2017
SOURCE: low oil pressure
It is a plu located directly above your filter on the oil filter adapter housing.. its about 3 inches long with wires plugged into it.. takes a special little socket to remove it...10 dollars at auto stores for the socket...
Posted on Nov 25, 2008
SOURCE: My 2003 GMC Sierra Z71
the oil pressure is always high when you start it,the oil is cold and creates a different reading.
a few things...to consider
oil pressure sender defective
too much oil
wrong oil type
Posted on May 13, 2009
SOURCE: 97 GMC Z71 4X4 Not Locking in
If it's a shift - on - the - fly 4wd, then call your local Chevy truck dealer. There was a recall on the Electronic 4wd on these trucks. (common problem). Try this just for the heck of it. With the truck stopped, put in 4hi/lo, then put it in reverse. Back up slightly, (about 5ft or so) and then put it in drive (or first in a manual trans) and go forward. Did it lock in? If it locks in but won't unlock, try backing up to unlock. Hope this helps.
Posted on Jul 26, 2009
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