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Direct Fit Horn - High Tone
Replacement
Part Number: REPC502504
Vehicle Info Required to Guarantee Fit
$16.44
Vehicle Fitment
  • 1975 - 1976 GMC G25 Rally STX 8 Cyl 7.4L
  • 1975 - 1976 GMC G25 Rally 8 Cyl 7.4L
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Notes : High Tone, With Mounting Bracket, 2 Male Blade TerminalQuantity Sold : Sold individuallyWarranty : 1-year unlimited-mileage warranty
Direct Fit Horn - Low Tone
Replacement
Part Number: REPC502505
Vehicle Info Required to Guarantee Fit
$13.50
Vehicle Fitment
  • 1975 - 1976 GMC G25 Rally STX 8 Cyl 7.4L
  • 1975 - 1976 GMC G25 Rally 8 Cyl 7.4L
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Notes : Low ToneQuantity Sold : Sold individuallyWarranty : 1-year unlimited-mileage warranty
Direct Fit Horn - Tone
Replacement
Part Number: SET-REPC502504-2
Vehicle Info Required to Guarantee Fit
$28.44
Vehicle Fitment
  • 1975 - 1976 GMC G25 Rally STX 8 Cyl 7.4L
  • 1975 - 1976 GMC G25 Rally 8 Cyl 7.4L
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Components : (2) HornsQuantity Sold : Set of 2Warranty : 1-year unlimited-mileage warranty
Replacement REPO282101 Tie Rod Adjusting Sleeve - Direct Fit, Sold individually
Vehicle Info Required to Guarantee Fit
$13.07
Vehicle Fitment
  • 1975 - 1976 GMC G25 Rally STX 8 Cyl 7.4L
  • 1975 - 1976 GMC G25 Rally 8 Cyl 7.4L
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Notes : 11/16 in. X 18 ThreadsWarranty : 1-year unlimited-mileage warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including lead and mineral oils, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replacement SET-REPO282101-2 Tie Rod Adjusting Sleeve - Direct Fit, Set of 2
Vehicle Info Required to Guarantee Fit
$24.83
Vehicle Fitment
  • 1975 - 1976 GMC G25 Rally STX 8 Cyl 7.4L
  • 1975 - 1976 GMC G25 Rally 8 Cyl 7.4L
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Location : Front, Driver And Passenger SideComponents : (2) Tie Rod Adjusting SleevesWarranty : 1-year unlimited-mileage warrantyQuantity Sold : Set of 2Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including lead and mineral oils, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replacement REPC545601 Steering Coupling - Direct Fit
Vehicle Info Required to Guarantee Fit
$22.01
Vehicle Fitment
  • 1975 - 1976 GMC G25 Rally STX 8 Cyl 7.4L
  • 1975 - 1976 GMC G25 Rally 8 Cyl 7.4L
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Warranty : 1-year unlimited-mileage warrantyQuantity Sold : Sold individually
Driver or Passenger Side Halogen Headlight, With bulb(s) - Sealed Beam Type, 7 x 6 in.
Vehicle Info Required to Guarantee Fit
$25.42
Vehicle Fitment
  • 1978 GMC G25 All Submodels All Engines Sealed Beam Type
Product Details
Location : Driver Or Passenger SideNotes : 7 x 6 in. Sealed Beam Type HeadlightsLight Source : HalogenAssembly : With bulb(s)Color/Finish : Clear LensType : Sealed beamRecommended Use : OE ReplacementQuantity Sold : Sold individuallyWarranty : 1-year unlimited-mileage warranty
Driver and Passenger Side Halogen Headlight, With bulb(s) - Sealed Beam Type, 7 x 6 in.
Vehicle Info Required to Guarantee Fit
$48.31
Vehicle Fitment
  • 1978 GMC G25 All Submodels All Engines Sealed Beam Type
Product Details
Location : Driver And Passenger SideNotes : 7 x 6 in. Sealed Beam Type HeadlightsComponents : (2) HeadlightsLight Source : HalogenAssembly : With bulb(s)Color/Finish : Clear LensType : Sealed beamRecommended Use : OE ReplacementQuantity Sold : Set of 2Warranty : 1-year unlimited-mileage warranty
Chrome Step Bumper, Without mounting bracket(s)
Vehicle Info Required to Guarantee Fit
$128.92
Vehicle Fitment
  • 1978 GMC G25 All Submodels All Engines
Product Details
Components : Face barRecommended Use : OE ReplacementColor/Finish : ChromeConfiguration : Face Bar OnlyParking Aid Sensor Holes : Without parking aid sensor holesLicense Plate Provision : With license plate provisionMaterial : SteelProduct Fit : Direct FitQuantity Sold : Sold individuallyReplaces OE Number : 15975716Replaces Partslink Number : GM1102124Warranty : 1-year unlimited-mileage warranty
Radiator, Automatic Transmission Cooler
Replacement
Part Number: P162
Vehicle Info Required to Guarantee Fit
$82.00
Vehicle Fitment
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
Product Details
Notes : Please measure your Radiator size before ordering.Recommended Use : OE ReplacementNumber of Rows : 1-Row CoreTank Material : Plastic TankCore Material : Aluminum CoreCore Dimensions : 26.38 x 17.25 x 1.25 in. Core SizeAutomatic Transmission Cooler : With Transmission CoolerEngine Oil Cooler : Without Engine Oil CoolerColor/Finish : Factory FinishInlet Size : 1.31 in. InletOutlet Size : 1.56 in. OutletInlet Location : Top left inletOutlet Location : Bottom right outletReplaces DPI Number : DPI# 162Product Fit : Direct FitQuantity Sold : Sold individuallyReplaces OE Number : 3040821Replaces Partslink Number : GM3010365Warranty : 1-year unlimited-mileage warranty
Radiator, With Auto Trans Cooler, Without Engine Oil Cooler
Vehicle Info Required to Guarantee Fit
$84.94
Vehicle Fitment
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Notes : Please measure your Radiator size before ordering.Recommended Use : OE ReplacementNumber of Rows : 1-Row CoreTank Material : Plastic TankCore Material : Aluminum CoreCore Dimensions : 28.25 x 17.25 x 1.25 in. Core SizeAutomatic Transmission Cooler : With Transmission CoolerEngine Oil Cooler : Without Engine Oil CoolerColor/Finish : Factory FinishInlet Size : 1.31 in. InletOutlet Size : 1.56 in. OutletInlet Location : Top left inletOutlet Location : Bottom right outletReplaces DPI Number : DPI# 161Product Fit : Direct FitQuantity Sold : Sold individuallyReplaces OE Number : 52477738Replaces Partslink Number : GM3010319Warranty : 1-year unlimited-mileage warranty
Control Arm - Front, Driver Side Upper
Dorman®
Part Number: RB520181
Vehicle Info Required to Guarantee Fit
$76.42
Vehicle Fitment
  • 1975 - 1978 GMC G25 All Submodels All Engines
Product Details
Location : Front, Driver Side UpperNotes : Bolt On Attachment Type; Threaded Ball Joint Stud TypeSeries : Dorman OE SolutionsGreasable : GreasableAdjustability : Non-AdjustableMaterial : SteelBall Joint Included : With ball joint(s)Bushing Included : With bushing(s)Bushing Material : Rubber bushingQuantity Sold : Sold individuallyRecommended Use : OE ReplacementInterchange Part Number : Moog RK621269, Raybestos 502-1135Anticipated Ship Out Time : Same day - 1 business dayWarranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Carbon Black, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Control Arm - Front, Passenger Side, Upper
Dorman®
Part Number: RB520182
Vehicle Info Required to Guarantee Fit
$76.53
Vehicle Fitment
  • 1975 - 1978 GMC G25 All Submodels All Engines
Product Details
Location : Front, Passenger Side, UpperSeries : Dorman OE SolutionsAdjustability : Non-AdjustableMaterial : SteelBall Joint Included : With ball joint(s)Bushing Included : With bushing(s)Quantity Sold : Sold individuallyRecommended Use : OE ReplacementInterchange Part Number : Moog RK621268, Raybestos 502-1134Anticipated Ship Out Time : Same day - 1 business dayWarranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Carbon Black, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Control Arm - Front, Driver and Passenger Side, Upper
Vehicle Info Required to Guarantee Fit
$145.30
Vehicle Fitment
  • 1975 - 1976 GMC G25 Rally STX 8 Cyl 7.4L
  • 1975 - 1976 GMC G25 Rally 8 Cyl 7.4L
  • 1975 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1975 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1975 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Location : Front, Driver And Passenger Side, UpperAdjustability : Non-AdjustableMaterial : SteelBall Joint Included : With ball joint(s)Bushing Included : With bushing(s)Quantity Sold : Set of 2Recommended Use : OE ReplacementAnticipated Ship Out Time : Same day - 1 business dayWarranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Carbon Black, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Fuel Tank, 22 gallons / 83 liters
Replacement
Part Number: C670144
Vehicle Info Required to Guarantee Fit
$80.14
Vehicle Fitment
  • 1977 - 1978 GMC G25 Rally STX 6 Cyl 4.8L
  • 1977 - 1978 GMC G25 Rally STX 8 Cyl 5.7L
  • 1977 - 1978 GMC G25 Rally STX 8 Cyl 6.6L
  • 1977 - 1978 GMC G25 Rally 6 Cyl 4.8L
  • 1977 - 1978 GMC G25 Rally 8 Cyl 5.7L
  • 1977 - 1978 GMC G25 Rally 8 Cyl 6.6L
  • 1977 - 1978 GMC G25 Vandura 6 Cyl 4.8L
  • 1977 - 1978 GMC G25 Vandura 8 Cyl 5.7L
  • 1977 - 1978 GMC G25 Vandura 8 Cyl 6.6L
Product Details
Notes : Without seal(s)Recommended Use : OE ReplacementProduct Fit : Direct FitCapacity : 22 gallons / 83 litersMaterial : SteelColor/Finish : SilverQuantity Sold : Sold individuallyReplaces OE Number : 375312Warranty : 1-year unlimited-mileage warranty
Page 1 of 571 | Showing 1 - 15 of 8553 results

GMC G25 Customer Reviews

Direct Fit Horn - Low Tone
Jun 09, 2020
Great product
Great product but didn’t have directions one was a ground and one was to the horn was easy to figure out but would of been nice to have a card saying how to hook it up
Robert Robert
VERIFIED PURCHASER
Purchased on May 20, 2020
Did not fit exactly like OEM, but did fit. I had to thread and plug and attritional hole.
Gregory Broerman
VERIFIED PURCHASER
Purchased on May 05, 2020
Perfect. Very loud!!! Just perfect for my 1975 Ford Mustang II.
Daniel Simon
VERIFIED PURCHASER
Purchased on Mar 27, 2020

GMC G25 Guides

FAQs—GMC G25

Why is my brake so noisy? I cannot focus on driving because it is so annoying.

Well, the common cause of a noisy or squeaky brake is a worn-out brake pad. You have to check it regularly and have it replaced if needed. However, there are other factors that can cause your brake to squeak. These include rusty brake rotors, which can happen overnight due to moisture, and stepping on the brake pads too hard, causing heat that can glaze brake pads and produce annoying squeaky sounds. Go to your nearest repair shop to have your brake pads checked and replaced if necessary.

It is my first time to experience engine overheating with my GMC G25. What should I need to do?

There might be some problem with your cooling system. Make sure to monitor your temperature gauge while driving. If the temperature hits "H" or hot and you see steam coming out from your GMC G25's hood, you have to carefully park your car on a safe place and turn the engine off to let it cool. Let the temperature go down by opening the hood. Carefully add water or coolant to the reservoir. But if you are not familiar with the parts, better go to the nearest mechanic to provide you an intelligent solution.

I think my fuel gauge is faulty because I notice that it is not providing accurate fuel reading. What seems to be the problem?

The first thing you need to check is the fuse. Worn-out fuse is one of the main reasons behind faulty fuel gauge. Replace your old fuse and check if the fuel gauge starts working properly. If not, you have to inspect the voltage limiter if it's in good condition. Fixing your voltage limiter will also fix your fuel gauge problem. Sometimes, corroded wirings are also the cause of a faulty fuel gauge. It might be hard to locate and to troubleshoot, so ask help from a qualified mechanic instead.

What are the signs of a failing alternator? I am worried that my GMC G25's alternator would fail.

The purpose of the alternator is to provide power to all of the electronic parts of your car. So when you notice that your battery is so weak, try charging and then check if it's still weak when starting your engine. If so, the alternator is really the problem here. You also need to check the alternator alone if it is working properly. If not, ask a mechanic to double check the errors and replace it if needed. If it seems that the dim lights or lights in the dashboard suddenly fade away, it is already a sign of a faulty alternator. Always be cautious and careful. Regular inspection is the key to maximize your vehicle. Watch out for foul smell as well because it might be a sign that the system belts had overheat. This will lead to a rubber that is slipping on the alternator pulley, resulting in poor alternator performance.

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