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Reduced Engine Power - on startup only
2003 Yukon, 245k miles, 5.3L 2wd -- I started getting the Reduced Engine Power warning a few years ago not long after I bought this truck used from the 1 previous owner. For a year, I occasionally got the REP warning, maybe once every month or so. Then, it seemed to completely go away this...- dukbludvl
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- reduced engine power rep starter throttle position sensor
- Replies: 3
- Forum: Engine & Drivetrain
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Could a broken chassis-to-hood ground strap cause my battery to drain and various CEL codes?
Hi All - appreciate your thoughts on this. 2003 GMC Yukon 5.3L 2wd with 175k miles. I've been driving these 00-06 Yukons for 22 years. Had a 2000 that I put 400k miles on, and a 2005 that I put 300k on, and I love these 00-06 model years so I bought this '03 used a year ago from the original...- dukbludvl
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- bad grounds battery drain body to frame ground ground grounds parasitic drain parasitic draw strap
- Replies: 4
- Forum: Engine & Drivetrain
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Instrument gauge cluster repair -- overnight parasitic battery drain
Looking for advice and recommendations. I've been trying to track down the source of a parasitic battery drain on my 2003 Yukon SLT 2wd 5.3L with about 180k miles. I'm the second owner, had it for about a year. Always garage kept (per the prior owner). BACKGROUND: A year ago, I put in a new... -
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Which battery (AGM or Wet) came stock in 2012 Tahoe?
I'm trying to figure out what type of battery came stock in my 2012 Tahoe (second owner), 5.3L, 4wd, LT. Is there anywhere I can go to figure this out? I know if you've got a AGM you're not supposed to replace with wet, but if it came with a lead acid battery then you can install an AGM, right?- dukbludvl
- Thread
- Replies: 8
- Forum: Engine & Drivetrain
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Two Tone Yukon Denali
Is there a two-tone available on the Denali or other model Yukons that I don't know about, or is this an aftermarket job? If this is available, I want it. I think it's a killer look. Everything else about this Denali looks stock (even the black wheels are stock GMC wheels), which makes me... -
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Oil sitting on bottom of PCV valve - catchcan or new PCV valve needed
Howdy. My 2003 Yukon has the old PCV valve that's in the vacuum line -- before they integrated it into the valve cover. It has the fixed orifice type, so no rattling part inside. My question is this: I'm seeing oil on the bottom of it when I pull vacuum line out. When I say the bottom, I...- dukbludvl
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- catch can catch-can catchcan pcv pcv valve
- Replies: 0
- Forum: Engine & Drivetrain
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Dielectric grease applied to both ends of ignition wires
So, I'm a moron. It's been years since I've changed plugs and wires. This week, I installed new Delco platinum plugs and new Delco wires on my 2003 GMC Yukon 5.3L 2wd with Delphi coils, about 150k on the motor. Everything went well with getting the old plugs out and new plugs in. Then, I...- dukbludvl
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- delphi coils dielectric grease ignition coils ignition wires misfire plugs spark plugs stall wires
- Replies: 26
- Forum: Engine & Drivetrain
