I have a 2008 GMC 2500. My cigarette lighter (not the Aux 1 or 2 power jack) stopped working and I check all the fuses. None are blown but I have no power. Are there any in-line fuses in this circuit?

In most cases, the cigarette lighter for both the driver and passenger sides of a vehicle are connected to the same fuse. Therefore, it is likely that the same fuse controls both cigarette lighters in your 2005 Chevrolet Express 1500. To determine which fuse controls the cigarette lighters, you should refer to your vehicle's owner's manual, which will provide a diagram of the fuse box and indicate which fuse is associated with the cigarette lighter circuit. Once you have located the appropriate fuse, you can check to see if it is blown and replace it if necessary.

2109, I am answering from the dead pool. via a black hole,worm hole.
and almost 100 years in the future, we end cig ports and charge ports then and went full blown USB v50 AND or mag change slots.
sorry
the truth for many is they have no clue cars can have 2 or 4 fuSE boxes. 2 in cab and 2 in engine bay and even varies by the engine size,
BUT now fully gone, with PURE EV Byzantium batteries. the element found on MARs year 2050, with car EV batteries the sized of breadbox
and recharges in 10 seconds. AND RUNS 1000 MILES .
if you scan the PCM it will tell you what failed, so didnt?
BUT ELECTRIC BILLS NOW $2 PER kw/HOUR.
OUCH BUT A dollars is worth a penny then. oops.

i logged in to 2009 service manual on line for you.
and found.
BOTH UNDER HOOD! ALL 20AMPS
FUSE 38 named: LTR/DLC 20AMPS KILLS CIG (and scan tool both)
AUX JACK 33 IS AUX JACK ONLY.
SORRY NO RELAY YEAR 2009 BUT 2109 , NO CAR FOUND.
'
2019 SAME BOX, UNDERHOOD and again sorry no relays.
FUSE F70UA AND F25UA, 20AMPS BOTH.
2109, WE USE 20AMP BCM REGULATORS NO FUSES MA'/ AND IF YOU REMOVE THE SHORTS IN THE JACKS THE POWER RESUMES , like magic.
AUTOMATICALLY.

ymmv,

John, Open passenger door wide, fuse box, passenger side end of dash, under removable trim cover.
The fuse marked Cigar Ltr./Aux.Pwr. 20 amp. is the fuse you want to look at. Check the attached links,instruction and guides, Good luck
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http://www.autofuseboxdiagram.com/10639-2000-oldsmobile-intrigue-fuse-box-diagram
2000 olds intrigue cigar lighter fuse Google Search
Where is the fuse for your cigarette lighter located at for your 98...
Where is the fuse for your cigarette lighter located at for your 99...

Look for fuse that is labeled AUX power.

There are actually FIVE cigarette lighter/ Auxilliary Power Outlets shown in the wiring diagrams for your vehicle.
The Instrument Panel [1] Accessory Power Outlet (Cigarette Lighter) is protected by the "LTR" Fuse (# 53 - 20 Amp) in the Power Distribution Center (PDC) in the engine compartment.

The Instrument Panel [2] Accessory Power Outlet is protected by the "AUX PWR" Fuse (20 Amp) In the Instrument Panel Fuse Block on the left side of the dash.

The Center Seat Accessory Power Outlet and the (two) Center Console Power Outlets are protected by the "AUX PWR 2" Fuse (20 Amp) In the Instrument Panel Fuse Block on the left side of the dash. NOTE: If your vehicle is not equipped with the Center Seat Accessory Power Outlet, or the Custom Floor Console (optional), this fuse position will most likely be empty.

{: ) There are two fuses that protect the front IP power outlet or lighter plugs. At the underhood fuse block, labeled CIG LTR 15amps and AUX PWR 20amps. See red arrows on diagram below.
The fuse on the driver side door fuse block labeled AUX PWR2 20amps protects the rear lighter plugs.

a defective outlet

If you still have your owners manual, it will show you the fuses. Just in case you don't, they are located in the fuse panel under the hood. The AUX outlet fuse is just to the left of the 3rd relay along the top row, the cig fuse is located just below the 3rd relay.

the problem is always the lighter or lighter receptacle