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GMC Sierra 3500 HD Engine Valves Adjustment

A valve adjustment is an extremely important car service, but it’s pretty straightforward. The cost will vary depending on the type of car.

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GMC Sierra 3500 HD Engine Valves Adjustment

RepairSmith offers upfront and competitive pricing. The average cost for GMC Sierra 3500 HD Engine Valves Adjustment is $214. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you.

Car
Location
Quoted on
Price
2018 GMC Sierra 3500 HD
6.0L V8 Base • 23,000 miles
Indio CA 92201
Nov 17, 2020
$196 - $240
2015 GMC Sierra 3500 HD
6.0L V8 Base • 15,000 miles
Union City CA 94587
Nov 15, 2020
$193 - $235
2012 GMC Sierra 3500 HD
6.6L V8 Turbo Diesel SLT • 18,000 miles
Oceanside CA 92057
Nov 12, 2020
$195 - $239
2014 GMC Sierra 3500 HD
6.6L V8 Turbo Diesel SLE • 62,000 miles
Clovis CA 93613
Oct 27, 2020
$180 - $220
2018 GMC Sierra 3500 HD
6.0L V8 SLT • 26,000 miles
Los Angeles CA 90019
Oct 26, 2020
$182 - $222
2007 GMC Sierra 3500 HD
6.6L V8 Turbo Diesel WT • 23,000 miles
San Jose CA 95136
Oct 23, 2020
$184 - $224
2012 GMC Sierra 3500 HD
6.0L V8 WT • 77,000 miles
Ely NV 89301
Oct 22, 2020
$201 - $245
2019 GMC Sierra 3500 HD
6.6L V8 Turbo Diesel Denali • 10,000 miles
Simi Valley CA 93063
Oct 22, 2020
$181 - $221
2016 GMC Sierra 3500 HD
6.6L V8 Turbo Diesel Denali • 32,000 miles
Bakersfield CA 93312
Oct 19, 2020
$209 - $255
2018 GMC Sierra 3500 HD
6.6L V8 Turbo Diesel SLE • 13,000 miles
Westminster CA 92684
Oct 19, 2020
$203 - $248
Last Updated:
Dec 15, 2020 8:42 PM
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What is a Valve Adjustment?

Let’s take this one word at a time. The valve that’s being adjusted is an engine valve. Engine valves are extremely critical parts of your car. The purpose of the engine valves is simple. Every cylinder in the car’s engine has valves that sit on top of the cylinder. There are intake and exhaust valves. The intake valves let air and fuel (or just air in some cases) into the engine and the exhaust valves let spent gases out. The camshaft, rocker arms, and valve lifters are responsible for opening the valves, and a spring closes them. Pushrods are also added to the mix on some cars. But, as is the case with so many things, good things can come to an end. Over time, the space between the valve and the camshaft can change. And when that happens, the timing of the valve system will get all messed up. The valves won’t open and close at the right time, leading to an air and fuel mixture that isn’t quite right, and suddenly the engine isn’t too happy. So, that brings us to the second half of “valve adjustment”: the adjustment. When the aforementioned issue takes place, it’s time for a valve adjustment. A valve adjustment isn’t actually an adjustment of the valve, but rather of the space between the valve and camshaft, so that the system will function properly. Many cars have self-adjusting valves. So, if your car is one of those lucky ones, you’re set.

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Symptoms of Valves that need adjusting

Scheduled maintenance

Many cars have valve adjustments built into scheduled maintenance, for a fairly simple reason. Adjust the valves before they’re terribly out of line, and you’ll never have to deal with valve issues. So, pay attention to the scheduled maintenance. The manufacturer is trying to help you save some money and hassle.

Tapping noise

A tapping or ticking noise under your hood means two things: First, your car may need of a valve adjustment, and second, you probably didn’t pay attention to the scheduled maintenance. When the valves aren’t properly adjusted, there will be a weird tapping-like noise due to the inaccurate spacing.

Engine performance problems

A valve adjustment that’s either too loose or too tight can lead to engine performance problems such as rough running and lack of power. Either scenario can cause damage to the engine as well.

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How urgent is a Valve Adjustment?

A car that is in need of a valve adjustment is perfectly safe to drive. You’re fine to get in and go. Over time, however, you’ll cause damage to your engine, and I don’t need to tell you why that’s bad, so it’s best to just stay on top of getting your valves adjusted.

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