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Gas spilling when filling up
It's a Suburban so no saddle tank and no spare tire delete, it's a rear tank mount.- texdave
- Post #8
- Forum: Tech Discussion
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Gas spilling when filling up
Fuel pump has 3 lines, one from the tank, one to the carb, and a return line. Also, I just replaced the gas cap due to getting distracted while filling up and forgetting to put the cap back on so it's probably not that. I have no issues with either fuel leaking when the car sits in the garage...- texdave
- Post #5
- Forum: Tech Discussion
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Gas spilling when filling up
When I fill up my stock 25 gallon tank at the pump, the pump stops/clicks as normal when full and shortly thereafter I can hear gas spilling. Looking underneath, I can't quite pin point where the spill comes from other than the general tank area. Other than that, vehicle works great -- fuel...- texdave
- Thread
- Replies: 7
- Forum: Tech Discussion
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Missing air vent component?
Appreciate the responses everyone. @legopnuematic I took a look at my service manual and the "Plenum valve" actually refers to the valve/flapper on the cowl that controls the outside air flow. The part I'm missing is apparently the "Air inlet valve" which should open up when AC is on Max mode so... -
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Missing air vent component?
I have a 76 GMC Burb and am troubleshooting why I don't get a lot of air flow when I put my HVAC controls on Vent or AC. Blower motor was replaced last year and it works across all speeds. Last year I did have the passenger side kick panel replaced with one that allowed for a speaker. I took... -
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Motortown Impact Package for Suburbans?
Did some more Googling, looks like it was a one year only appearance package that was also available for the trucks and K5. https://autowise.com/all-of-73-87-chevy-and-gmc-special-edition-pickup-trucks-part-i/#:~:text=GMC%20Impact%20Edition%20%7C%201976 -
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Motortown Impact Package for Suburbans?
I found this brochure for a Motortown Impact Appearance Package that GMC seems to have made available to dealers/buyers back in 1976. http://www.73-87chevytrucks.com/pdfs/1976/1976 Motortown Impact '76 Suburban.pdf Has anyone actually seen a Suburban with this package out in the wild? I'd... -
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Passenger turn & side marker lights trouble
On my 76 Burb, I can't seem to track down what's causing my passenger side turn and side marker lights to not work correctly. Here's how they are functioning right now: * Turn on hazards = all lights work but passenger turn + side marker lights which don't turn on * Engage right turn on...- texdave
- Thread
- Replies: 4
- Forum: Electrical & Audio
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Gear oil thrown around rear diff
I have a 76 GMC Burb C25 2WD w/a 454 engine and the TH400 behind it. I believe it has a full floating rear axle and 3.73 gears based on the RPO codes. I had a shop completely service the rear axle earlier this year (new seals, brakes, bearings, service diff, etc). A few weeks ago, I noticed a...- texdave
- Thread
- Replies: 2
- Forum: Differential & Driveline
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Cruise control inop
I noticed that my factory cruise control was not working on my 76 3/4 ton Suburban. I took a look at the 76 Supplemental shop manual to learn up on the Cruise system and seems like the major components are: the regulator, the servo unit, brake switch, and the column switch. The brake and...- texdave
- Thread
- cruise control
- Replies: 4
- Forum: Tech Discussion
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AC noise under throttle
Truck: 76 GMC C25 Suburban w/454 + 3 speed auto + factory air conditioning When I'm driving and have the air conditioning on (Max or Normal mode, at any Fan speed) I hear what sounds like a short sucking sound every 40 seconds or so. It gets louder as the RPMs go up and I don't believe I hear...- texdave
- Thread
- air conditioning
- Replies: 1
- Forum: Tech Discussion
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Interior door handle pocket trim
I recently purchased a 1976 GMC C25 Suburban in the Sierra Classic trim and while most of the truck is in good shape, there's a few things in the interior that can be improved. One of the things that's bugging me is that a couple of the door handle pockets are in bad shape. The rear driver side... -
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76 GMC C25 Suburban 3-point seat belt trim question
I recently bought a 76 GMC C25 Sierra Classic Suburban and looking to improve the interior a bit as the outside is well taken care of. Seats belts is where I'm starting since it only came with lap belts all around. I bought a set of 3-point seat belts from LMC Truck. It seems pretty...
