Question about 1995 GMC Sierra C1500

1 Answer

I removed the fuel line from the back of the intake to see if it was getting fuel; it was. should there be a copper or some form of gasket behind the secondary nut assembly, it will not stop leaking?

I figure that there would be at least small amount of fuel coming from at least one port, what would make both stop simultaneously on half tank? fires right up with gas poured in.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • GMC Master
  • 21,873 Answers

Sounds like the fuel pump in the gas tank quit working.
There should be a port on the fuel line where you hook up a gauge to check pressure.
You might want to check the pump relay to see if the pump is getting power when you turn the key on.

Posted on May 02, 2013

6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

SOURCE: 1997 GMC K1500 4x4 5.7 SFI injection system

Did you check the fuel filter?
or possably the catalitic converter is cloged, check the exhaust pressure.

Posted on May 27, 2008

  • 1498 Answers

SOURCE: 1997 GMC K1500 4x4 5.7 SFI injection system

Hey there boatright33,

A few things things immediately come to mind.

There may be a problem with the engine controller. You could check the ODBII onboard diagnostics. Auto part stores will usually do this for you at no cost.

When you pulled the ones that were/went bad, how did the filters look? Could there be particulate matter still in the tank causing them to fail.

I always put this one off until last. Check the injectors. Are they gummed up?

Let me know what you find out

Posted on Aug 12, 2008

  • 124 Answers

SOURCE: removal of fuel lines from fuel pump assembly

There is special disconnect tool just for 98-00 classic CK pickups. Lisle makes them they are a two piece plastic tool that is pretty cheap to buy. Do not buy a regular disconnect tool bcause they will not fit in the lines at the pump. The lisle number at Carquest is 37500. Please rate.

Posted on Dec 27, 2008

  • 75797 Answers

SOURCE: Wacky fuel gauge.

to coorrect this u will need to pull the gas tank and replace the fuel gage sending unit inside the gas tank, hwerwe is the part number for the fuel module which has the seding unit in it.
ACDELCO Part # SK1158

Posted on Jul 06, 2009

  • 95 Answers

SOURCE: I have a 97 Jimmy 2dr 4x4 ..Not getting any gas ..

When you turn the key on you should hear the fuel pump run if not, (fuel pump should run for 2 seconds and turn off). first thing to check is your fuel pump cut off switch which goes off in case of an accident. Next thing to check on the fuel line is find a Schrader valve to check for fuel pressure. If you have pressure you may have a different problem. If you don't have pressure or not sure hooked up a test light to the Power Supply at the fuel pump. If the light goes on you have power to the fuel pump. You may have a clogged fuel filter. If the fuel pump is still not working you may have a bad fuel pump or bad ground. Splice a wire into the ground and grounded it. If the fuel pump doesn't work pull it out and manually test it. If the fuel pump does work check all your grounds and make sure their cleaning connected to the body good. If this does not work Get a wiring diagram to figure out where the problem is. Good luck

Posted on Jun 11, 2010

Testimonial: "Thank you very much .. it turn out to be a bad connection on the plug."

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Intake manifold

If you're replacing with a stock intake it's a pretty straight forward job...drain coolant, disconnect battery, remove belt, remove alternator and bracket to intake manifold, take note of where each spark plug wire goes, twist plug wires 1/4 turn in each direction then pull up being careful not to tear long rubber boots on wires, leave spark plugs in so no dirt or coolant gets into cylinders.remove e.g.r tube from throttle body,disconnect all vacuum lines and all sensor connectors,you have to be careful removing injector connectors because they become brittle and will break very easily, remove bolts for throttle body and remove body,.relieve fuel pressure from fuel rail by putting on a fuel pressure tester and with a relief valve, there's various ways to release fuel pressure, this is safest, then disconnect fuel line from rail (if you don't want to do it that way you can leave fuel line on and remove 4 8 mm bolts for fuel rail and remove rail and fuel injectors all together, take injectors out from intake not fuel rail by pulling on them from bottom of injectors near intake)remove coolant hoses at back passengers side of intake, remove 2 10 mm bolts for thermostat housing, remove T stat...there may be a bracket on the drivers side rear of intake, (remove top 15 mm bolt, and remove ground cable at back side of head, think it's a 13 mm bolt, then remove 15 mm bolt holding the back of bracket, it's gonna be tight back there but doable with wrench) remove the rest of the 10 mm bolts holding the intake manifold on, remove intake...remove intake gaskets taking care not to let any dirt or debris to get into head ports, I usually put a clean rag in each hole, and clean around them then blow out anything that might have fallen into any can look rite down into them to make sure everything is clean.make sure all dirt is off head surface and install new gaskets, they lock into place on heads if installed correct. Put on new intake and hand tighten bolts..these bolts have to be torqued in order..starting from the middle of intake torque bolts to 15-22 lb-ft going in a crossover order (right side, left side, right side in an X pattern from center out)...install all connectors and components in reverse order , fill fluids and check over for any leaks or anything loose...I maverick have missed a few small steps but think im pretty close...this isn't a bad job, but take your time and mark anything you think you might not remember where it goes...good luck..any other questions please contact me..

Jun 28, 2014 | Ford Mustang Cars & Trucks

1 Answer

Do I have to take the top in take manafold off to tighten the lower intake manafold on a 1993 buick regal 3.8 L engine?

Yes you do, the following info explains the necessary procedure.

Click here to enlarge image.
Click here to enlarge image.

  1. Properly relieve the fuel system pressure.
  2. Disconnect the negative battery cable. Place a clean drain pan under the radiator, open the drain **** and drain the cooling system.
  3. Remove the air cleaner assembly and the fuel injector sight shield.
  4. Disconnect the cables from the throttle body and mount bracket.
  5. Remove the coolant recovery reservoir.
  6. Remove the inner fender electrical cover on the right side.
  7. Remove the right rear crossover pipe heat shield.
  8. Disconnect the fuel lines from the fuel rail and from the cable bracket.
  9. Remove the alternator and brace.
  10. Remove the throttle body cable mounting bracket with the vacuum lines and disconnect the vacuum lines.
  11. Tag and detach the electrical connections at the throttle body and both banks of fuel injectors.
  12. Disconnect the vacuum hoses from the canister purge solenoid valve and transaxle module and intake connection.
  13. Unbolt the power steering pump and move forward. DO NOT disconnect the fluid lines.
  14. Tag and disconnect the spark plug wires position lay aside.
  15. Disconnect the coolant bypass hose from the intake manifold.
  16. Remove the solenoid valve mounting bracket and power steering support brace from the intake manifold.
  17. Disconnect the heater pipes from the intake and front cover.
  18. Remove the alternator support brace from the intake.
  19. Disconnect the upper radiator hose from the housing.
  20. Remove the thermostat housing and thermostat from the intake.
  21. Detach the electrical connector from the temperature sensor and sensor switch.
  22. Unfasten the intake manifold bolts, then remove the manifold as an assembly. Remove and discard the gaskets.
  23. If separating the upper manifold from the lower, proceed as follows:
  24. Remove the fuel rail and fuel injectors.
  25. Detach the coolant sensor switch.
  26. Remove the manifold end cap cover.
  27. Remove the upper intake manifold and throttle body assembly from the lower manifold. Remove and discard the gaskets. To install:
  28. Thoroughly clean all gasket mating surfaces.
  29. If replacing the upper manifold, proceed as follows:
  30. Apply a 1⁄16 in. bead of Loctite® Instant Gasket Eliminator 51845 or equivalent to the lower manifold mating surface. Make sure to circle all bolt holes.
  31. Carefully lower the upper manifold and throttle body assembly onto the lower manifold.
  32. Tighten the upper manifold retaining bolts to 19 ft. lbs. (26 Nm).
  33. Install the manifold end cap cover and the coolant sensor switch.
  34. Install the fuel injectors and rail to the manifold assembly.
  35. Clean the mating surfaces and install the intake manifold gaskets and seals. Apply sealer to the ends of the of the intake manifold seals.
  36. Position the intake manifold and apply a suitable thread lock compound to the bolt threads. Tighten the retaining bolts to 88 inch lbs. (10 Nm), twice, in the sequence shown in the accompanying figure.
  37. Attach the electrical connector to the temperature sensor and sensor switch.
  38. Install the thermostat housing and thermostat with a new gasket.
  39. Connect the alternator support brace to the intake.
  40. Install the solenoid valve mounting bracket and power steering support brace to the intake manifold.
  41. Connect the heater pipes to the intake and front cover.
  42. Attach the coolant bypass hose to the intake manifold.
  43. Install the power steering pump support bracket and tighten to 37 ft. lbs. (50 Nm).
  44. Install the spark plug wires on both sides.
  45. Install the belt tensioner pulley and tighten to 33 ft. lbs. (45 Nm).
  46. Install the power steering pump.
  47. Connect the vacuum hoses to the canister purge solenoid valve and transaxle module and intake connection.
  48. Attach the electrical connections at the throttle body and both banks of fuel injectors.
  49. Install the alternator and brace.
  50. Connect the throttle body cable mounting bracket with the vacuum lines.
  51. Install the right rear crossover pipe heat shield.
  52. Install the cables to the throttle body.
  53. Connect the fuel lines to the fuel rail and mount bracket.
  54. Install the inner fender electrical cover on the right side.
  55. Install the coolant recovery reservoir and upper radiator hose. Fill the cooling system.
  56. Install the air cleaner assembly and the fuel injector sight shield.
  57. Connect the negative battery cable.

Jan 31, 2011 | 1993 Buick Regal

1 Answer

I have a 2002 buick rendzvous 3.4 thats keeps poping up with code p0300 radmon missfire i did a lower intake gasket replaced with a/c delco plugs new wires it runs but it acts like its misfiring it has on...

could be low fuel pressure, a clogged fuel filter will give you a mild misfire sometimes. the alcohol in gas now makes moisture form inside your gas tank and rust if it's a steel tank but if not it will still make your fuel filter rust internally, always try the fuel filter first. could be a failing coil pack but usually you get a specific cyl. # misfire. could be a vacuum leak but but if the lower intake gasket was just replaced you should have noticed any loose vacuum lines.

Jan 02, 2011 | Buick Rendezvous Cars & Trucks

2 Answers

Trying to figure out how to change my intake manifold gasket on a honda civic 97

  1. Take loose the intake tube from the intake and breather box.
  2. Remove the wiring harness from the intake mahifold there should be 4 injector plugs 3 plgs on the back of the manifold .
  3. You must take loose the fuel lines both the supply line on the left side of the fuel rail and the return line on the fuel pressure regulator
  4. Throtle cable must be taken off of the throtle body(and also dentent or shift cable if it is an automatic trans.)
  5. There is going to be a bracket on the underside of the manifold that more than likely will have to be gotten from the bottom should be a 14mm take loose from the manifold not the block
  6. There will be 8 to 10 12mm bolts that hold the intake manifold onto the head all of which are hard to get with the head still on the car but it can be done for a couple of them u will need a wrench and possibly even a swivel socket
  7. Remove the intake and pay attention to the hose that runs from the intake to the oil breather on the back of the motor its a bit tricky to get back on if u dnt have samll hands
  8. Make sure the gasket area of the intake and head are clean before installing the new gasket
  9. Reverse the instructions to replace the intake and make sure you torque the intake stud nuts to 16 ft/lbs

May 11, 2010 | 1997 Honda Civic

2 Answers

Got a 1984 Chevy Camaro, and trying to replace the fuel pump which is connected to the side of the engine. There is a piston type thing in there that I cant get to pull back in order to fasten the new pump...

Removal & Installation When disconnecting the fuel pump outlet fitting, always use two wrenches to avoid twisting the line.
  1. Disconnect the fuel intake and outlet lines at the pump, then plug the pump intake line.
  2. Remove the two pump mounting bolts and lockwashers; remove the pump and its gasket.
  3. If the pump pushrod is to be removed from the V8, remove the two adapter bolts and lockwashers, then remove the adapter and its gasket.
  4. Install the fuel pump with a new gasket reversing the removal procedure. Coat the mating surfaces with sealer.
  5. Connect the fuel lines and check for leaks.

You should be able to be able to get the new pump in without having to worry about the rod....the pump has to go in just right....hard to explain, but you're not going to be able to move the rod.

Jan 18, 2010 | 1984 Chevrolet Camaro

3 Answers

Car wont start i think its the selonoid

The starter motor on the Northstar engines is underneath the intake manifold,it sits in the valley just above the crank shaft.

Jul 29, 2009 | 1993 Cadillac Seville

1 Answer

99 Lumina Won't start after intke gskt chng--fuel system clicking

Sound like you forgot to put new O-rings on fuel have a intake leak through the injectors ports. that why car wont crank .remove fuel rail.replace upper and lower O-rings on fuel injectors.

Jul 19, 2009 | 1999 Chevrolet Lumina

2 Answers

Carborator not getting gas

If you have fuel in line make sura how is your fuel filter, if the fuel fiter geting fuel from the fuel pump then and no fuel coming into carburator remove the head part of the caburator some scerws on then taked out you will see foult chamber remove the flout chamber careful needle valve coming out then take screw driver remove needle holder then you will see filter which is blocked fuel to inter the caburator.

1- you need kit of caburator parts you can get new filter.
change all gaskets top and poton of the caburator.

Dec 03, 2008 | 1990 Toyota Pickup

1 Answer

Changing fuel injectors

here is the answer,follow these steps one by one please: (1)relieve fuel pressure by using a fuel pressure gauge that also has a bleeder valve on it (2)disconnect the negative battery terminal (3)remove the intake manifold service cover (4)remove air intact duct between the air cleaner housing and the throttle body gasket.also remove the throttle body spacer bolts,remove the spacer and remove thegasket.discard the old gaskets. (5)Disconnect the fuel supply and return lines from the fuel rail. 960Disconnect the vacuum hose from the fuel pressure regulator. (6)Remove the nut that attaches the fuel rail end-point bracket retainer. (7)Disconnect the electrical connectors form all 8 fuel injectors and set the fuel injector harness aside. (8)Remove the fuel rail mounting bolts. (9)Remove the fuel rail and the fuel injectors as a single assembly. (10)Remove the fuel injectors one by one,by flipping up the U-clip retainer then pulling the injector from the fuel rail. (11)Remove the old O-rings from the injectors and be sure to use new ones when installing the new injectors. (12)Also use a new gasket when installing the spacer,also use a new throttle body gasket.>>when finished start car and check for leaks.and you're done.

Jun 21, 2008 | 2004 Ford F350

Not finding what you are looking for?
1995 GMC Sierra C1500 Logo

30 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

75797 Answers


Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides