GMC K3500 Cold Start Injector Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(3,013)

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.

Customer Ratings

(3,013)

Cold Start Injector Replacement Service

How much does a Cold Start Injector Replacement cost?

On average, the cost for a GMC K3500 Cold Start Injector Replacement is $106 with $11 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1988 GMC K3500V8-7.4LService typeCold Start Injector ReplacementEstimate$136.55Shop/Dealer Price$151.94 - $175.61
1980 GMC K3500V8-7.4LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$131.96 - $155.64
1981 GMC K3500L6-4.8LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$131.96 - $155.64
1985 GMC K3500L6-4.8LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$131.94 - $155.60
1983 GMC K3500L6-4.8LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$131.97 - $155.67
1989 GMC K3500V8-5.7LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$131.96 - $155.64
1984 GMC K3500V8-6.2L DieselService typeCold Start Injector ReplacementEstimate$121.55Shop/Dealer Price$136.82 - $160.40
1990 GMC K3500V8-7.4LService typeCold Start Injector ReplacementEstimate$121.55Shop/Dealer Price$137.19 - $161.06
Show example GMC K3500 Cold Start Injector Replacement prices

What is the Cold Start Injector all about?

The cold start injector is also known as the cold start valve. The part is located on the cold air intake, which is found on the intake manifold. It is a fuel injector that is controlled electronically. The cold start injector works only when the engine has a cold start, or when the engine’s temperature is below a certain point. When this happens, a computer tells the injector to inject more fuel into the mixture that goes through the cylinders to the engine. The goal is for the engine to have an easier and faster start even when it is cold.

It is important to note that the temperature is referring to that of the engine, not the outside weather. When the cold start injector isn’t working properly, the engine will sound rough and will have trouble idling unless pressure stays on the pedal to increase the amount of fuel that goes into the manifold. The engine may keep dying every time it is started until it warms up enough.

Keep in mind:

  • The cold start injector also helps moderate engine speeds while improving performance and even fuel economy.
  • Another job of the cold start injector is to help control engine idle speed.
  • The cold start injector wires are separate from other injectors and they are often screwed in.
  • The injector can be tested for proper working order.

How it's done:

  • The Cold Start Injector is verified that it needs to be replaced. The electrical connector is then disconnected.
  • The defective Cold Start Injector is unscrewed from the housing and removed.
  • After the new Cold Start Injector is installed and secured into the housing, the fuel line is connected.
  • The electrical connection is then connected and the Cold Start Injector is tested for operation.
  • The vehicle is road tested to ensure proper operation of the Cold Start Injector and checked for leaks.

Our recommendation:

If the engine sounds unusual when idling or if it has trouble starting when it is cold, you should have one of our expert mechanics inspect the cold start injector. The technician can test it with a diagnostic meter to determine the issue.

What common symptoms indicate you may need to replace the Cold Start Injector?

  • Engine won’t start or stalls
  • Engine runs poorly
  • Engine stops when you take your foot off the pedal

How important is this service?

The engine may not start when the cold start injector stops working, so it is important to have it tested before you are stranded.

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

(3,013)

Rating Summary
2,853
79
21
10
50
2,853
79
21
10
50

Alex

20 years of experience
141 reviews
Alex
20 years of experience
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

Francisco

10 years of experience
174 reviews
Francisco
10 years of experience
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

Theodore

16 years of experience
1638 reviews
Theodore
16 years of experience
GMC K3500 L6-4.8L - Battery - Bellevue, Washington
Hes awesome, super helpful every time!

James

23 years of experience
4 reviews
James
23 years of experience
GMC Acadia V6-3.6L - Oil Change - Salinas, California
On time. Knowledgeable. Great Job!

Excellent Rating

(3,013)

Rating Summary
2,853
79
21
10
50
2,853
79
21
10
50
Number of GMC services completed
33143+
services done by our mechanics
TOTAL NUMBER OF EXPERT GMC MECHANICS
900+
experts on our platform

Recent articles & questions

How to Brake Smoothly (The Pivot Method)
Braking Braking is a skill. Braking, just like any other aspect of driving, takes a certain level of skill to get right. Good braking technique will not only be less stressful on the driver and passengers, but it will also...
How Long Does a Supercharger Belt Last?
Both Both superchargers and turbochargers are used on today’s vehicles to provide extra power and performance. While they do essentially the same thing (injecting additional air into the intake), they work in different ways. Turbochargers work based on exhaust, which...
Child Seat Safety Laws in West Virginia
In In West Virginia, children in motor vehicles have to be secured using an approved restraint system. This is common sense, and it is the law as well. Given that the main cause of death in children under 12 is...

Programming a key fob isn't working

Hi there. Check to see if the key fob is programmed for the right vehicle. Complete the following steps to help you with your programming issue: If your vehicle key fob hooks into the ignition then remove key from ignition....

Warning exclamation and it says reset hybrid system. Will not start

I would recommend having the vehicle inspected by a qualified professional who is proficient in diagnosing hybrid vehicle issues. It is very likely that the issue was related to the accident that the vehicle was in.

2012 Malibu won’t start. Unplug the fuel pump relay for 10 sec it starts right up. Got new relay started 4 2 wks.

You may want to check to be sure the fuel pressure regulator (https://www.yourmechanic.com/services/fuel-pressure-regulator-replacement) is working properly. The fuel pressure regulator is a device which controls the pressure of fuel supplied to the fuel injectors on an engine. This works by...

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 (855) 347-2779 · hi@yourmechanic.com