GMC K3500 Valve Cover Gasket Replacement Costs

Estimate price near me

Service Location

Customer Ratings

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

See availability

Customer Ratings

Valve Cover Gasket Replacement Service

How much does a Valve Cover Gasket Replacement cost?

On average, the cost for a GMC K3500 Valve Cover Gasket Replacement is $167 with $27 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1991 GMC K3500V8-5.7L	Service typeValve Cover Gasket Replacement	Estimate$220.30	Shop/Dealer Price$240.23 - $291.90
1993 GMC K3500V8-7.4L	Service typeValve Cover Gasket Replacement	Estimate$282.29	Shop/Dealer Price$307.80 - $378.96
1996 GMC K3500V8-6.5L Turbo Diesel	Service typeValve Cover Gasket Replacement	Estimate$1136.72	Shop/Dealer Price$1216.54 - $1431.30
1993 GMC K3500V8-6.2L Diesel	Service typeValve Cover Gasket Replacement	Estimate$973.17	Shop/Dealer Price$1057.12 - $1289.75
2000 GMC K3500V8-5.7L	Service typeValve Cover Gasket Replacement	Estimate$269.69	Shop/Dealer Price$290.67 - $343.15
1994 GMC K3500V8-7.4L	Service typeValve Cover Gasket Replacement	Estimate$296.89	Shop/Dealer Price$322.81 - $394.28
1990 GMC K3500V8-6.2L Diesel	Service typeValve Cover Gasket Replacement	Estimate$958.58	Shop/Dealer Price$1042.41 - $1274.95
2000 GMC K3500V8-7.4L	Service typeValve Cover Gasket Replacement	Estimate$296.89	Shop/Dealer Price$322.61 - $393.94

Show example GMC K3500 Valve Cover Gasket Replacement prices

What is a valve cover gasket and how does it work?

Each cylinder head on your car’s engine has an aluminum or plastic valve cover bolted to it. Between this valve cover and the cylinder head, there is a gasket that keeps engine oil from leaking out. The valve cover bolts keep the gasket compressed, thus preventing leaks. Over time the gasket becomes brittle from the engine’s heat or the bolts loosen, creating an engine oil leak.

When to consider replacing a valve cover gasket?

Look for these signs of oil leakage at the valve cover gasket:

Oil seepage or dripping. Should the joint between the valve cover and the cylinder head fail, oil often becomes visible on the valve cover or cylinder heads. Usually, the oil will attract and hold dirt.
Oil accumulating inside the spark plug well. The spark plug tube seals are part of the valve cover sealing system. If the tube seals are leaking, you will see oil on the spark plugs or wires. The valve cover gasket and tube seals are all replaced at one time if either fails.
Oil leakage at the rubber grommets. The bolts holding the valve cover to the cylinder head sometimes have rubber grommet seals under the bolt heads. If these seals are leaking, you will see oil seepage around the bolt heads.

How do mechanics replace a valve cover gasket?

Remove engine cover. Some engines have plastic covers over the entire top. The plastic engine cover is removed to access the valve cover(s).
Remove components. On 4 cylinder engines, the valve cover is usually readily accessed once any electrical components and emission control tubing are removed, plus any accelerator linkages that might be in the way. On 6 or 8 cylinder engines, depending on which valve cover gasket is leaking, removal of the air intake plenum might be required, as well as additional steps.
Remove valve cover. Once the valve cover(s) is accessed, the cover retaining bolts are removed and the cover pulled off. The valve cover sealing surface is checked with a straight edge to be sure the cover is flat and thus reusable.
Install new gasket. The new valve cover gasket is applied along with new rubber grommets under the retaining bolt heads. If there are spark plug tube seals, these are replaced as well. In some applications, oil resistant RTV (room temperature vulcanization) sealant must be applied to specific segments of the sealing surface, along with the new gasket, to ensure a complete and effective seal. The cover is bolted back on, using a calibrated inch pound torque wrench, and all other components are restored to their original position.
Check for leaks. Finally, the car engine is run and a visual check is made for oil leaks.

Is it safe to drive with a valve cover gasket problem?

Yes, as long as the amount of oil leaking is small, and there is no leak onto hot engine parts such as the exhaust manifold, it is safe to drive your car until you have an opportunity to fix it.

If you notice oil leaking on to the ground beneath your car after it is parked, you do not have a small leak, and it needs to be found and repaired as soon as possible. Any leak, of course, means your oil level is dropping as you drive the car. If you have a leak, be sure to check your oil more frequently than usual so you do not run low on oil and damage the engine.

When replacing a valve cover gasket keep in mind:

The mechanical components of a car engine will typically outlive the gaskets used to seal the engine. However, many of these gaskets, including the valve cover gaskets, are relatively easy to replace.
Never add stop leak type products to engine oil or other vehicle fluids. Not only are these materials not approved or specified by the original equipment manufacturers, but they also can create additional problems that may be costly to repair.
Often, if a car is old enough to have a valve cover oil leak, there will be oil leaks elsewhere on the engine, so you should request a complete leak inspection. It may be more cost effective to repair multiple leaks during one service call.
Often, the PCV (Positive Crankcase Ventilation) valve is inserted into a rubber grommet in one of the valve covers. An old rubber grommet is a potential leak source, as well as connections to the PCV valve. These components should be inspected and considered for replacement while there is access to the valve cover.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee

Meet some of our expert GMC mechanics

Real customer reviews from GMC owners like you.

Excellent Rating

(31)

Rating Summary

30

0

0

0

1

30

0

0

0

1

SEE REVIEWS NEAR ME

Alex

21 years of experience

160 reviews

Alex

21 years of experience

by Karen

GMC K3500 V8-7.4L - Starter - Glen Ellyn, Illinois

Extremely professional and well versed in auto mechanics. Explained things simply and was able answer my questions clearly

Theodore

17 years of experience

1794 reviews

Request Theodore

Theodore

17 years of experience

Request Theodore

by Andrew

GMC K3500 L6-4.8L - Battery - Bellevue, Washington

Hes awesome, super helpful every time!

Francisco

11 years of experience

174 reviews

Request Francisco

Francisco

11 years of experience

Request Francisco

by Deanna

GMC K3500 V8-6.5L Turbo Diesel - Battery - Portland, Oregon

Francisco was great. Not a super complicated service this time, but he was very thorough and helpful. Thanks

Greg

23 years of experience

624 reviews

Greg

23 years of experience

by Jaydn

GMC Yukon V8-4.8L - Valve Cover Gasket - Gilbert, Arizona

Was very helpful and always made sure I got the best deal.

Excellent Rating

(31)

Rating Summary

30

0

0

0

1

30

0

0

0

1

SEE REVIEWS NEAR ME

Recent articles & questions

Symptoms of a Bad or Failing Evaporator Temperature Sensor (Switch)

Common signs include lack of cold air coming from AC, temperature fluctuations, and the AC compressor not activating.

How Long Does a Crankshaft Seal Last?

The The crankshaft seal is located in the crankshaft of your vehicle. The crankshaft converts rotary into linear motion. This means it uses the force created by the pistons in the engine to move in a circular motion so the...

Cell Phones and Texting: Distracted Driving Laws in New Jersey

New New Jersey defines distracted driving as anything that can divert the driver’s attention away from focusing on the road. Distracted driving endangers bystanders, passengers, and the driver. Distractions include: Using a smartphone or cell phone Texting Talking to passengers...

Timing belt failed, how do I keep it from happening twice?

Hello! Thank you for writing in with this question. Timing belt replacement is generally recommended by Subaru at 105,000 miles, or 105 months. Other manufacturers recommend replacing them between 60,000-90,000 miles. It is very possible that there were contributing factors...

Hazard lights don't work

Hello there, thank you for asking about your 1990 Oldsmobile Cutlass Calais. There can be an issue with the switch itself or the hazard flasher assembly. The flasher is the device that makes the lights blink and a failure here...

Grinding noise coming from the front.

Hi - with the water you see under your vehicle and the grinding noise is a good indication that your water pump needs to be replaced (https://www.yourmechanic.com/services/water-pump-replacement). The grinding noise is the bearing starting to fail. Trembling and shaking while...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (844) 997-3624 · hi@yourmechanic.com