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How much does GMC C25 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 C25 services.

Service Estimate Dealer Estimate Your Savings Location
Service type Differential/Gear Oil Replacement for 1977 GMC C25 V8-7.4L Estimate $86 Dealer Estimate $127 Savings 32.43% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1978 GMC C25 V8-5.7L Estimate $86 Dealer Estimate $127 Savings 32.43% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1976 GMC C25 V8-7.4L Estimate $86 Dealer Estimate $127 Savings 32.43% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1977 GMC C25 V8-6.6L Estimate $86 Dealer Estimate $127 Savings 32.43% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1976 GMC C25 V8-5.7L Estimate $86 Dealer Estimate $127 Savings 32.43% Location Denver, CO
Service type Oil Change for 1976 GMC C25 V8-5.7L Estimate $85 Dealer Estimate $138 Savings 37.80% Location Denver, CO
Service type Oil Change for 1976 GMC C25 V8-6.6L Estimate $85 Dealer Estimate $138 Savings 37.80% Location Denver, CO
Service type Oil Change for 1975 GMC C25 L6-4.8L Estimate $85 Dealer Estimate $138 Savings 37.80% Location Denver, CO

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Meet some of our expert GMC C25 mechanics

Grzegorz

Grzegorz

297 Reviews; 37 years of experience
Very professional and friendly!
San Francisco, CA
December 28
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James

James

199 Reviews; 27 years of experience
good
Newport Beach, CA
August 25
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Joshua

Joshua

21 Reviews; 16 years of experience
Very professional. Did a great job.
Englewood, CO
January 13
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Answers to common GMC C25 questions

Q: Ignition Lock cylinder issue
Answered by Jerel
The attempted theft may have caused damaged to the housing behind the steering wheel. The spring loaded action comes from inside the housing and not the lock cylinder so I have a feeling you will either have to replace the...
Q: Heater blowing cold air
Answered by Jessica
Hello. You are likely looking like an internal leak somewhere in the system. If there are no visible leaks inside of the engine bay or visible leaks on the ground, then the engine is consuming the coolant. Have there been...
Q: Can I repair the 5/16 nylon fuel line (high pressure line) with a splice of the smaller 3/8 nylon fuel line using a hose splice?
Answered by Jay
Hello. The fuel line is under fuel pressure and should only be repaired using a repair that is using an approved repair with certified parts. Using the wrong fuel line repair parts may cause a fuel line to rupture causing...
Q: Taillights don't work. 1998 GMC C2500
Answered by Spencer
Hello there. Faulty tail lights are a common repair on the GMC C2500. There are a few possible reasons for the brake lights to work but not the taillights. The most common would be a wiring fault, bulb failure (https://www.yourmechanic.com/services/tail-lamp-bulb-replacement),...

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Most recent GMC C25 recalls

EQUIPMENT:OTHER:LABELS

Manufacturer’s report date:
April 9, 2001
NHTSA campaign ID number:
01V125000
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SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM

Manufacturer’s report date:
August 7, 2000
NHTSA campaign ID number:
00V222000
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SEATS

Manufacturer’s report date:
May 19, 1999
NHTSA campaign ID number:
99V130000
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SERVICE BRAKES, HYDRAULIC:SWITCHES:BRAKE LIGHT

Manufacturer’s report date:
February 4, 1999
NHTSA campaign ID number:
99V025000
LEARN MORE

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Paul did a good job fixing my car quickly. He also got a accurate diagnostic of my car's isues.



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!



Ben was great. He arrived early, completed the work quickly & cleanly, and was quite amiable. I didn't have to leave my home and got the maintenance completely with ease - 5 stars.

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