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How much does GMC P15 repair and maintenance cost?

The cost depends on your car, the type of service, and where you live. Here are estimates for a selection of GMC P15 services.

Service Estimate Dealer Estimate Your Savings Location
Service type Brake Pads - Front Replacement for 1978 GMC P15 L6-4.8L Estimate $158 Dealer Estimate $272 Savings 41.74% Location Denver, CO
Service type Oil Change for 1978 GMC P15 L6-4.8L Estimate $102 Dealer Estimate $159 Savings 35.91% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1976 GMC P15 L6-4.8L Estimate $84 Dealer Estimate $124 Savings 31.99% Location Denver, CO
Service type Oil Change for 1977 GMC P15 L6-4.8L Estimate $102 Dealer Estimate $159 Savings 35.91% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1977 GMC P15 L6-4.8L Estimate $84 Dealer Estimate $124 Savings 31.99% Location Denver, CO
Service type Oil Change for 1976 GMC P15 L6-4.8L Estimate $102 Dealer Estimate $159 Savings 35.91% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1978 GMC P15 L6-4.8L Estimate $84 Dealer Estimate $124 Savings 31.99% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1975 GMC P15 L6-4.8L Estimate $84 Dealer Estimate $124 Savings 31.99% Location Denver, CO

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Meet some of our expert GMC P15 mechanics

Chris

Chris

558 Reviews; 17 years of experience
Quick, fast and professional. I think I just found a goto guy.
Santa Ana, CA
August 12
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Christopher

Christopher

131 Reviews; 22 years of experience
Yeah!
Tampa, FL
December 3
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Allen

Allen

171 Reviews; 31 years of experience
Allen arrived at the time that was scheduled he was very professional and created no disorder or mess while working on the vehicle and what I did like was he showed me the part that was being replaced and described what had gone wrong, excellent guy.
Apopka, FL
September 28
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Answers to common GMC P15 questions

Q: Brake switch confirmed good, but brake lights not working
Answered by Jay
The brake lights are turned on and off by the brake light relay in the underhood relay box. This relay is controlled by the body control module and is signaled by the brake switch (https://www.yourmechanic.com/services/brake-light-switch-replacement). Check the relay first to...
Q: My yukon is running like nthere is something terribly teribly wrong
Answered by Tim
The mass air flow sensor measures the speed of the air going into the engine. The P0101 code (https://www.yourmechanic.com/article/-p0101-obd-ii-trouble-code-mass-airflow-maf-circuit-operating-range-or-performance-problem-by-john-nelson) could be an electrical issue. The PO449 code (https://www.yourmechanic.com/article/p0449-obd-ii-trouble-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-malfunction-by-spencer-clayton) is related to fuel tank emissions. Codes give you the area of...
Q: Window controls not functioning properly.
Answered by Mia
This is most likely the result of a failed power window motor or regulator. The regulator is a scissor-type lift that moves the window up and down when powered by the motor. A professional, such as one form YourMechanic, can...
Q: got a code for p1870
Answered by Toby
These transmissions have problems with the valve bodies wearing out internally. If the valve body was replaced in your transmission when it was rebuilt, I suggest bringing it back to that technician to have it inspected under warranty. If the...

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Milton was great! Called to let me know when he'd be arriving. Very friendly & very thorough with his explanations. Took his time to make sure, double, triple check that everything was running properly. Very pleasant experience!



I have to say I am totally satisfied with the service performance and Bernard is quite professional offering details of the work which was completed. I will definitely utilize your service in the future and will recommend to family and friends.



Whitney went above and beyond in solving my issues. Extremely friendly and extremely professional! Thanks, Whitney!

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