Jump to content

2003 Yukon: 3 Issues..need Advise


Recommended Posts

Posted

Got 3 issues with 2003 GMC Yukon XL autoride:

 

1. Started hearing a rapid/constant clicking under the hood, almost sounds like fuel injectors. Any way to reduce this sound, or what it may be? It is quit loud when idlying, and when driving.

 

2. When starting: throwing a "service air bag" code on dash. (Was throwing now and then, now pretty much a constant).

 

3. Whgen starting throwing a "service air ride" code on dash. (Compressor comes on now and then. When compressor comes on, no code is thrown).

 

I haven't taken it in to have checked, because I wanted to research first. Just wondering if anyone has any advise or ideas.

Thanks

Dan

Posted

1) noisey lifters or valves...try running a fuel system cleaner(gm makes a good one) how often you change your oil

 

2) could have a wire or fuse loose(do not try to tamper with the airbag, take it to a dealer)

 

3)service ride is probably a wheel sensor going or rusted...

Posted

The service air ride is probably one of the rear shocks has a hole in it or your compressor went out. Bad news on that is anytime that light comes on its not going to be cheap.

Is the clicking noise you hear under the hood all the time or just at start up for a min or two?

Archived

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

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts
  • Member Statistics

    342,840
    Total Members
    8,960
    Most Online
    appletrav
    Newest Member
    appletrav
    Joined
  • Who's Online   5 Members, 0 Anonymous, 655 Guests (See full list)

  • Latest Articles

  • Posts

    • Thanks; I looked there a few minutes, and I think I can find something. I really never looked there, as I thought it was stuff like PTO/aftermarket bodies/accessories like snow plows.
    • This is a 1/2 ton thing ONLY.  All HDs 2020-2026 have the two speed transfer case, with Autotrac as an option.     1/2 tons 2019-2026, regular 4x4s come with a single speed case (no 4LO!), and trucks with Z71 ordered, or all Trail Boss trucks come with the 2 speed case.  2 speed case is also an option on WT, and is also standard on High Country.  
    • 2013 5.3 still to this day calls for the PF48 filter.  Which as a 15psi bypass pressure.     There is a TSB, 17-NA-157 that talks about the PF-63 and PF-64 filters which have a higher bypass rating of 22psi.    TSB HERE - temp.xml   "Beginning in 2012, the oil pumps began to regulate main gallery feedback instead of pump out pressure. This means that the oil pump now does not begin to regulate until pressure is built up to the main gallery. This change reduces the amount of time it takes to provide oil to the engine bearing and lifters during extreme cold start conditions.  Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE), High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. These engines with the main gallery feedback oil pump control systems are factory built with an ACDelco® oil filters"   It also calls out what engines use those filters.  The gen 4 small blocks were not on that list (LMG, LC9, L9H, L92, L94, L20, L96).  Gen 5 small blocks use the higher pressure filter.          That all said...   Your 7045 Napa filter is the PF63 equivalent, with 22psi bypass.  You are already using the higher bypass pressure filter.  You CAN keep using it, you don't technically have to use it though.  
    • Do you know WHY the filter relief setting was increased to 22 psig?    When the new system goes into the second stage the pump volume ramps up considerably. It was found that the 15 psi filter bypass setting put the filter in bypass on a warm engine when the second stage was activated. Raising the filter bypass setting forced the filter to do what it designed to do. Filter. Preventing debris from circulating during high load, high rpm operation.    So next question is how did GM find this out? VLOM/lifter failures and a deep dive by Melling Corp.    Last question. Is it required? Look at it like this; a motor may be equipped with a rev limiter. But it only works if the set point in reached. That 22 psig setting only matters if the pressure differential across the filter media exceeds 15 psig during normal warm operation. Second stage kicks in around 3000-3500 rpm.    I can't answer your question because I don't know you and how you use the truck. But I think there is enough information here to let you decide for yourself. 😉
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...