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GMC 3911068 Spring,Valve(W/Dampener)

1985-1991 GMC

Customer Questions & Expert Answers (13)
GM 3911068 Spring,Valve(W/Dampener)
  • Part Description
    SPRING, Engine Valve
  • Replaced By
    94666580
  • Manufacturer
    General Motors
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number3911068
    Part DescriptionSPRING, Engine Valve
    Other NamesValve Spring
    Item Dimensions5.3 x 2.2 x 2.2 inches
    Item Weight1.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU3911068
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    1988-1991, 1985-1986 GMC C15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX, REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1988-1991, 1985-1986 GMC C25006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LC2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB, CREW CAB, REGULAR CAB
    1988-1991, 1985-1986 GMC C35008 Cyl 5.0L, 8 Cyl 5.7LC3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 CAB CHASSIS 183.5, C3500 EXTENDED CAB, C3500 REGULAR CAB, CAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB
    1985-1991 GMC G15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L1/2 TON CARGO, 1/2 TON PASSENGER
    1985-1991 GMC G25006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L1/2 TON CARGO, 1/2 TON PASSENGER, 3/4 TON CARGO, 3/4 TON PASSENGER
    1985-1991 GMC G35006 Cyl 4.3L, 8 Cyl 5.7L1 TON CARGO, 1 TON COMMERCIAL/RECREATIONAL VEHICLE, 1 TON PASSENGER
    1985-1991 GMC Jimmy6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L1/2 TON
    1988-1991, 1985-1986 GMC K15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LK1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX, REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1988-1991, 1985-1986 GMC K25006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LK2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB, REGULAR CAB
    1988-1991, 1985-1986 GMC K35008 Cyl 5.7LCAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, K3500 CAB CHASSIS 135.5, K3500 CAB CHASSIS 159.9, K3500 EXTENDED CAB, K3500 REGULAR CAB, REGULAR CAB
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  • Customer Questions & Expert Answers

    Q:
    Is it correct part number for my vehicle? Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 3911068 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How can broken valve springs and defective valve stem seals be replaced without removing the cylinder head in four cylinder engine on Chevrolet Astro? Posted by Customer
    A:
    Valve springs can be visually inspected for tension and broken valve stems with seals can be serviced without removal of the cylinder head usually requiring a technician and two specialized tools and compressed air. In emergency when compressed air is not available, a nylon rope can be used so as to stop the valves from falling into the cylinder. To be started by using the removal of rocker arm cover and the spark plug from the cylinder in consideration, or all spark plugs if all the valve stem seals will be replaced. Make the piston at the top dead center of the compression strokes while making the necessary adjustment on the valves, and the adjustment can be done one cylinder after another starting at the firing order sequence. Slip an adapter into the spark plug hole and attach an air hose to a can of compressed air. Take out the bolt, pivot ball and the rocker arm for the bad valve and pull out the pushrod. Use compressed air to retain the valve; if there is leakage, another way is to sit the piston at a little before TDC and then put nice nylon rope in the combustion chamber. The parts next need to be protected from falling into the engine, which can be done by using shop rags, then you use a valve spring compressor to remove the keepers and compress the valve spring. Remove the valve stem O-ring seal and the spring retainer shield and examine the valve spring if it is damaged or not. It is wise to cover the valve stem with a rubber band or tape so that it does not fall, and let out the air pressure. Check the valve stem for signs of wear and tear and make sure the same spins freely in the guide. Reapply air pressure to hold the valve in place, oil the valve stem with the engine oil, and in case replace the umbrella type guide seal if at all needed. Mount the spring over the valve and the shield and fit the retainer of the valve spring into its seat to accommodate the new and finer O-ring seal. Place the keepers in the upper groove and use grease for the same if the groove is not able to hold the keepers in place. Pull off all the pressure from the spring tool, detach the hose from the air and take off the adapter from the spark plug hole. Put in the rocker arm(s) and the pushrod(s) and the spark plug(s) together with the wire and put back the rocker arm cover. Take the handles and start the engine checking the area of the rocker arm cover for any signs of oil leakage or any unusual sounds.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace broken valve springs or defective valve stem seals without removing the cylinder heads on 4.3L V6 engine on Chevrolet Blazer? Posted by Customer
    A:
    To replace broken valve springs or defective Valve Stem Oil Seals without removing the cylinder heads, keep these steps in mind, First, take off the valve cover(s), and both should be removed if all Valve Stem Oil Seals are to be replaced. For all seals replacement, remove the spark plug from the cylinder having problem or remove all of them. Turn the crankshaft until the affected piston is brought to top dead center on compression stroke. Start by cylinder number 1 in case of replacing all seals and follow through with cylinders following the firing order. An adapter is threaded into the spark plug hole and an air hose connected to a compressed air source, holding closed valves. Insert shop rags into cylinder head holes to keep debris from dropping into the engine. With a valve spring compressor, compress spring/damper assembly and remove keepers. Lift out spring retainer/oil shield/valve spring assembly along with intake valve's O-ring seal on valve stem and umbrella type guide seal. Wrap a rubber band or tape around the valve stem to avoid it falling into combustion chamber and release pressure of air. Check that there are no damages on valve stem and make sure it moves freely in guide. Lubricate valve stem and fit new intake valve umbrella-type guide seal for intake valves insertion point where it's stuck at top position around a piece of dowel pin that fits inside of it via available range at bottom of spring retainer channel. Install d/spring/damper assembly & shield compressing it enough for you then install n/O-ring seal over v/stem; Position either v/spring retainer or rotator; place "keepers" using dab of grease for retention till pressure is taken off s/tool; Disconnect air hose; put rocker arm(s) & pushrod(s) then that may be followed by reinstallation of valv/e covers; Reinstall spark plug(s) & wires, start engine and run engine also check for any oil leakage or any unusual sounds around the valve cover area. Be advised that these procedures require specialized tooling and should be performed with caution.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace broken valve springs and defective valve stem seals without removing the cylinder head on Chevrolet C1500? Posted by Customer
    A:
    To replace broken valve springs and defective Valve Stem Oil Seals without removing the cylinder head, special tools and a compressed air source are typically required. Start by taking off rocker arm cover on damaged cylinder head or, if we're changing all Valve Stem Oil Seals, take both covers away. Pull the spark plug out of the affected cylinder or remove every one of them when replacing all the seals. Make sure that the piston in the damaged cylinder is at top dead center on the compression stroke, beginning with number 1 if all seals are being replaced, and follow firing order sequence. Screw an adapter into the spark plug hole and connect it to a source of compressed air so as to keep valves closed during spring removal process from above. In case there is no compressed air, use nylon rope which is long enough so that it can fill combustion chamber through spark plug hole thereby avoiding drop valve. Afterwards, secure shop rags to above and below valves' cylinder head holes to prevent any ingress of part or tool. Use a valve spring compressor to compress the spring/damper assembly and remove keepers. Then check whether there is any damage on the valve stem and ensure it moves freely in its guide. Inspect for wear on rocker arm studs which may need machining shop replacements or threaded replacements on certain engines. Restore air pressure with respect to keeping the valve closed position; remove tape/rubber band from valve stem lubricate engine oil onto valve stem before installing new oil seal. Finally reassemble components including rocker arms, pushrods, spark plugs and rocker arm covers then start engine checking for oil leaks/abnormal noises at rocker arm cover area.
    Posted by GMPartsGiant Specialist
    Q:
    How can you replace broken valve springs or defective valve stem seals without removing the cylinder head on 2.2L four cylinder engine on Chevrolet Blazer? Posted by Customer
    A:
    Special tools and a source of compressed air are necessary to enable you change broken valve springs or faulty Valve Stem Oil Seals without taking off the cylinder head. Start by removing the spark plug from that particular cylinder (or all plugs if changing all seals). One cylinder at a time, start with number one cylinder at TDC, following the firing order. Put an adaptor into the spark plug hole, then link it up with an airline hose for supplying compressed air. Unbolt the rocker arm nut, remove the pivot ball and rocker arm from the leaking valve and take out the push rod. Supply compressed air to the cylinder in order to retain valves. Bring down valve spring compressors so that they can squeeze springs and hence release them from keepers. Get rid of spring retainer and valve spring, then replace guide seal making sure it is pushed downwards onto top of guide tube. Apply engine oil on valve stems and insert spring back followed by retainer forcing springs to their right places using locking tabs. Disconnect air hose, unthread adapter then reassemble rocker arm along with pushrod, spark plug and finally valve cover. Turn on engine and look for oil spills as well as strange noises near that head cover area. Failure of pressure to hold down valve when closed may suggest either damage in valve itself or its seat or both thus meaning extensive repair by removing head.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace broken valve springs and defective valve stem seals without removing the cylinder head on Chevrolet K1500? Posted by Customer
    A:
    To replace broken valve springs and defective Valve Stem Oil Seals without removing the cylinder head, special tools and a compressed air source are typically required. Start by taking off rocker arm cover on damaged cylinder head or, if we're changing all Valve Stem Oil Seals, take both covers away. Pull the spark plug out of the affected cylinder or remove every one of them when replacing all the seals. Make sure that the piston in the damaged cylinder is at top dead center on the compression stroke, beginning with number 1 if all seals are being replaced, and follow firing order sequence. Screw an adapter into the spark plug hole and connect it to a source of compressed air so as to keep valves closed during spring removal process from above. In case there is no compressed air, use nylon rope which is long enough so that it can fill combustion chamber through spark plug hole thereby avoiding drop valve. Afterwards, secure shop rags to above and below valves' cylinder head holes to prevent any ingress of part or tool. Use a valve spring compressor to compress the spring/damper assembly and remove keepers. Then check whether there is any damage on the valve stem and ensure it moves freely in its guide. Inspect for wear on rocker arm studs which may need machining shop replacements or threaded replacements on certain engines. Restore air pressure with respect to keeping the valve closed position; remove tape/rubber band from valve stem lubricate engine oil onto valve stem before installing new oil seal. Finally reassemble components including rocker arms, pushrods, spark plugs and rocker arm covers then start engine checking for oil leaks/abnormal noises at rocker arm cover area.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace broken valve springs or defective valve stem seals without removing the cylinder heads on 4.3L V6 engine on GMC Sonoma? Posted by Customer
    A:
    To replace broken valve springs or defective Valve Stem Oil Seals without removing the cylinder heads, keep these steps in mind, First, take off the valve cover(s), and both should be removed if all Valve Stem Oil Seals are to be replaced. For all seals replacement, remove the spark plug from the cylinder having problem or remove all of them. Turn the crankshaft until the affected piston is brought to top dead center on compression stroke. Start by cylinder number 1 in case of replacing all seals and follow through with cylinders following the firing order. An adapter is threaded into the spark plug hole and an air hose connected to a compressed air source, holding closed valves. Insert shop rags into cylinder head holes to keep debris from dropping into the engine. With a valve spring compressor, compress spring/damper assembly and remove keepers. Lift out spring retainer/oil shield/valve spring assembly along with intake valve's O-ring seal on valve stem and umbrella type guide seal. Wrap a rubber band or tape around the valve stem to avoid it falling into combustion chamber and release pressure of air. Check that there are no damages on valve stem and make sure it moves freely in guide. Lubricate valve stem and fit new intake valve umbrella-type guide seal for intake valves insertion point where it's stuck at top position around a piece of dowel pin that fits inside of it via available range at bottom of spring retainer channel. Install d/spring/damper assembly & shield compressing it enough for you then install n/O-ring seal over v/stem; Position either v/spring retainer or rotator; place "keepers" using dab of grease for retention till pressure is taken off s/tool; Disconnect air hose; put rocker arm(s) & pushrod(s) then that may be followed by reinstallation of valv/e covers; Reinstall spark plug(s) & wires, start engine and run engine also check for any oil leakage or any unusual sounds around the valve cover area. Be advised that these procedures require specialized tooling and should be performed with caution.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace broken valve springs or defective valve stem seals without removing the cylinder heads on 4.3L V6 engine on GMC Jimmy? Posted by Customer
    A:
    To replace broken valve springs or defective Valve Stem Oil Seals without removing the cylinder heads, keep these steps in mind, First, take off the valve cover(s), and both should be removed if all Valve Stem Oil Seals are to be replaced. For all seals replacement, remove the spark plug from the cylinder having problem or remove all of them. Turn the crankshaft until the affected piston is brought to top dead center on compression stroke. Start by cylinder number 1 in case of replacing all seals and follow through with cylinders following the firing order. An adapter is threaded into the spark plug hole and an air hose connected to a compressed air source, holding closed valves. Insert shop rags into cylinder head holes to keep debris from dropping into the engine. With a valve spring compressor, compress spring/damper assembly and remove keepers. Lift out spring retainer/oil shield/valve spring assembly along with intake valve's O-ring seal on valve stem and umbrella type guide seal. Wrap a rubber band or tape around the valve stem to avoid it falling into combustion chamber and release pressure of air. Check that there are no damages on valve stem and make sure it moves freely in guide. Lubricate valve stem and fit new intake valve umbrella-type guide seal for intake valves insertion point where it's stuck at top position around a piece of dowel pin that fits inside of it via available range at bottom of spring retainer channel. Install d/spring/damper assembly & shield compressing it enough for you then install n/O-ring seal over v/stem; Position either v/spring retainer or rotator; place "keepers" using dab of grease for retention till pressure is taken off s/tool; Disconnect air hose; put rocker arm(s) & pushrod(s) then that may be followed by reinstallation of valv/e covers; Reinstall spark plug(s) & wires, start engine and run engine also check for any oil leakage or any unusual sounds around the valve cover area. Be advised that these procedures require specialized tooling and should be performed with caution.
    Posted by GMPartsGiant Specialist
    Q:
    How can you replace broken valve springs or defective valve stem seals without removing the cylinder head on 2.2L four cylinder engine on GMC Jimmy? Posted by Customer
    A:
    Special tools and a source of compressed air are necessary to enable you change broken valve springs or faulty Valve Stem Oil Seals without taking off the cylinder head. Start by removing the spark plug from that particular cylinder (or all plugs if changing all seals). One cylinder at a time, start with number one cylinder at TDC, following the firing order. Put an adaptor into the spark plug hole, then link it up with an airline hose for supplying compressed air. Unbolt the rocker arm nut, remove the pivot ball and rocker arm from the leaking valve and take out the push rod. Supply compressed air to the cylinder in order to retain valves. Bring down valve spring compressors so that they can squeeze springs and hence release them from keepers. Get rid of spring retainer and valve spring, then replace guide seal making sure it is pushed downwards onto top of guide tube. Apply engine oil on valve stems and insert spring back followed by retainer forcing springs to their right places using locking tabs. Disconnect air hose, unthread adapter then reassemble rocker arm along with pushrod, spark plug and finally valve cover. Turn on engine and look for oil spills as well as strange noises near that head cover area. Failure of pressure to hold down valve when closed may suggest either damage in valve itself or its seat or both thus meaning extensive repair by removing head.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace broken valve springs or defective valve stem seals without removing the cylinder heads on 4.3L V6 engine on Chevrolet S10? Posted by Customer
    A:
    To replace broken valve springs or defective Valve Stem Oil Seals without removing the cylinder heads, keep these steps in mind, First, take off the valve cover(s), and both should be removed if all Valve Stem Oil Seals are to be replaced. For all seals replacement, remove the spark plug from the cylinder having problem or remove all of them. Turn the crankshaft until the affected piston is brought to top dead center on compression stroke. Start by cylinder number 1 in case of replacing all seals and follow through with cylinders following the firing order. An adapter is threaded into the spark plug hole and an air hose connected to a compressed air source, holding closed valves. Insert shop rags into cylinder head holes to keep debris from dropping into the engine. With a valve spring compressor, compress spring/damper assembly and remove keepers. Lift out spring retainer/oil shield/valve spring assembly along with intake valve's O-ring seal on valve stem and umbrella type guide seal. Wrap a rubber band or tape around the valve stem to avoid it falling into combustion chamber and release pressure of air. Check that there are no damages on valve stem and make sure it moves freely in guide. Lubricate valve stem and fit new intake valve umbrella-type guide seal for intake valves insertion point where it's stuck at top position around a piece of dowel pin that fits inside of it via available range at bottom of spring retainer channel. Install d/spring/damper assembly & shield compressing it enough for you then install n/O-ring seal over v/stem; Position either v/spring retainer or rotator; place "keepers" using dab of grease for retention till pressure is taken off s/tool; Disconnect air hose; put rocker arm(s) & pushrod(s) then that may be followed by reinstallation of valv/e covers; Reinstall spark plug(s) & wires, start engine and run engine also check for any oil leakage or any unusual sounds around the valve cover area. Be advised that these procedures require specialized tooling and should be performed with caution.
    Posted by GMPartsGiant Specialist
    Q:
    How can you replace broken valve springs or defective valve stem seals without removing the cylinder head on 2.2L four cylinder engine on GMC Sonoma? Posted by Customer
    A:
    Special tools and a source of compressed air are necessary to enable you change broken valve springs or faulty Valve Stem Oil Seals without taking off the cylinder head. Start by removing the spark plug from that particular cylinder (or all plugs if changing all seals). One cylinder at a time, start with number one cylinder at TDC, following the firing order. Put an adaptor into the spark plug hole, then link it up with an airline hose for supplying compressed air. Unbolt the rocker arm nut, remove the pivot ball and rocker arm from the leaking valve and take out the push rod. Supply compressed air to the cylinder in order to retain valves. Bring down valve spring compressors so that they can squeeze springs and hence release them from keepers. Get rid of spring retainer and valve spring, then replace guide seal making sure it is pushed downwards onto top of guide tube. Apply engine oil on valve stems and insert spring back followed by retainer forcing springs to their right places using locking tabs. Disconnect air hose, unthread adapter then reassemble rocker arm along with pushrod, spark plug and finally valve cover. Turn on engine and look for oil spills as well as strange noises near that head cover area. Failure of pressure to hold down valve when closed may suggest either damage in valve itself or its seat or both thus meaning extensive repair by removing head.
    Posted by GMPartsGiant Specialist
    Q:
    How can you replace broken valve springs or defective valve stem seals without removing the cylinder head on 2.2L four cylinder engine on Chevrolet S10? Posted by Customer
    A:
    Special tools and a source of compressed air are necessary to enable you change broken valve springs or faulty Valve Stem Oil Seals without taking off the cylinder head. Start by removing the spark plug from that particular cylinder (or all plugs if changing all seals). One cylinder at a time, start with number one cylinder at TDC, following the firing order. Put an adaptor into the spark plug hole, then link it up with an airline hose for supplying compressed air. Unbolt the rocker arm nut, remove the pivot ball and rocker arm from the leaking valve and take out the push rod. Supply compressed air to the cylinder in order to retain valves. Bring down valve spring compressors so that they can squeeze springs and hence release them from keepers. Get rid of spring retainer and valve spring, then replace guide seal making sure it is pushed downwards onto top of guide tube. Apply engine oil on valve stems and insert spring back followed by retainer forcing springs to their right places using locking tabs. Disconnect air hose, unthread adapter then reassemble rocker arm along with pushrod, spark plug and finally valve cover. Turn on engine and look for oil spills as well as strange noises near that head cover area. Failure of pressure to hold down valve when closed may suggest either damage in valve itself or its seat or both thus meaning extensive repair by removing head.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done after positioning the crankshaft for the 2002 Chevrolet Astro? Posted by Customer
    A:
    Thread an adapter into the spark plug hole and connect an air hose from a compressed air source.
    Posted by GMPartsGiant Specialist
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 3911068, the Right Choice

To ensure reliability, purchase GM part # 3911068 Spring,Valve(W/Dampener). It is sometimes referred to as GMC Rocker Shaft Spring Kit. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific GMC C2500, K1500, Suburban models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 3911068 Spring,Valve(W/Dampener). You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed GMC parts information, click here.

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