Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 7840274 Switch,Dimmer Pivot. It is sometimes referred to as GMC Dimmer Switch, GMC Headlight Switch, GMC Wiper Switch. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific GMC C2500, K1500, Suburban models.
Affordable, reliable and built to last, GM part # 7840274 Switch,Dimmer Pivot stands out as the smart option. GMPartsGiant.com is your prime online source with the biggest and best selection of genuine GM parts and accessories at giant discounted prices. We have the OEM GM parts and accessories you need at the wholesale prices. GMPartsGiant.com has you covered no matter what type of GM vehicle you drive. For detailed GMC parts information, click here.
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GMC 7840274 Switch,Dimmer Pivot
1985-1991 GMC
- Part DescriptionSWITCH, Headlamp Dimmer
- ManufacturerGeneral Motors
- Manufacturer's NotesThis part is discontinued.
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Product Specifications
Brand Genuine GMC Manufacturer Part Number 7840274 Part Description SWITCH, Headlamp Dimmer Other Names Headlamp Dimmer Switch, Wiper Switch Item Dimensions 5.8 x 4.0 x 3.9 inches Item Weight 0.60 Pounds Condition New Fitment Type Direct Replacement Manufacturer General Motors SKU 7840274 Warranty This genuine GM part is guaranteed by GM's factory warranty. Shipping & Return Shipping Policy Return Policy Warning: California’s Proposition 65Vehicle Fitment
View MoreYear Make Model Engine Important vehicle option details 1985-1986 GMC C1500 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX 1985-1986 GMC C2500 6 Cyl 4.3L, 6 Cyl 4.8L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4L CREW CAB, REGULAR CAB 1985-1986 GMC C3500 6 Cyl 4.8L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4L CAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB 1985-1991 GMC Jimmy 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel 1/2 TON 1985-1986 GMC K1500 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX 1985-1986 GMC K2500 6 Cyl 4.3L, 6 Cyl 4.8L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel REGULAR CAB 1985-1986 GMC K3500 6 Cyl 4.8L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4L CAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB 1987 GMC R1500 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel 1/2 TON 1987-1989 GMC R2500 6 Cyl 4.3L, 6 Cyl 4.8L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4L 3/4 TON, 3/4 TON CREW CAB 1987-1991 GMC R3500 6 Cyl 4.8L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4L 1 TON, 1 TON CREW CAB, CAB CHASSIS
Customer Questions & Answers
- Q:Will this part number fit my car? Posted by GMPartsGiant Specialist
- A:You can Select Your Vehicle to check if 7840274 fits your vehicle.Posted by GMPartsGiant Specialist
- Q:How do you install the headlight switch for the 1985 Buick Century? Posted by Customer
- A:Push the switch straight in being careful not to damage prongs on the new switch, tighten screws, connect the battery cable, and check operation.Posted by GMPartsGiant Specialist
- See expert answers on similar Headlight Switch
- Q:How do you remove the wiper switch on 1975-77 models of the 2015 Buick Regal? Posted by Customer
- A:Insert one or two narrow bladed screw drivers into each of the two slots within the switch face immediately above the knobs and bend the retaining clips downward or break them off, then rotate the top of the switch outward to remove.Posted by GMPartsGiant Specialist
- See expert answers on similar Wiper Switch
- Q:How do you reinstall the switch for the 1982 Buick Skylark? Posted by Customer
- A:To reinstall the switch, you need to follow the reverse of the removal procedure.Posted by GMPartsGiant Specialist
- See expert answers on similar Headlight Switch
- Q:How do you remove the headlight switch on 1975-79 models of the 1976 Buick Regal? Posted by Customer
- A:Remove the screws securing the headlight switch in place. Disconnect the multiple electrical harness from the switch, and remove.Posted by GMPartsGiant Specialist
- See expert answers on similar Headlight Switch
- Q:How do you remove the wiper switch on the 1982 Buick Century? Posted by Customer
- A:Insert one or two narrow-bladed screwdrivers into each of the two slots within the switch face immediately above the knobs and bend the retaining clips downward or break them off, then rotate the top of the switch outward to remove.Posted by GMPartsGiant Specialist
- See expert answers on similar Wiper Switch
- Q:How do you remove the steering column trim cover for the 1983 Buick Skylark? Posted by Customer
- A:Remove it from the underside of the dash.Posted by GMPartsGiant Specialist
- See expert answers on similar Dimmer Switch
- Q:How do you disconnect the negative battery cable for the 1983 Buick Skylark? Posted by Customer
- A:To disconnect the negative battery cable, you need to remove the instrument panel bezel, disconnect the wiring at the steering column, and remove the switch.Posted by GMPartsGiant Specialist
- See expert answers on similar Wiper Switch
- Q:What should you do to reinstall the negative battery cable of the 1984 Oldsmobile Omega? Posted by Customer
- A:To reinstall the negative battery cable, you should follow the reverse order of the removal procedure.Posted by GMPartsGiant Specialist
- See expert answers on similar Wiper Switch
- Q:What should you do after pushing the switch out of its mounting hole and lifting it up and out through the opening for the 1980 Pontiac Phoenix? Posted by Customer
- A:After pushing the switch out of its mounting hole and lifting it up and out through the opening, you should disconnect the switch from its wiring connector.Posted by GMPartsGiant Specialist
- See expert answers on similar Headlight Switch
- Q:How do you remove the lighting switch in the 1989 Oldsmobile Cutlass? Posted by Customer
- A:Start by disconnecting the negative cable at the battery.Posted by GMPartsGiant Specialist
- See expert answers on similar Headlight Switch
- Q:How do you complete the installation for the 1982 Pontiac Phoenix? Posted by Customer
- A:Reverse the removal procedure described in paragraphs 1 through 6.Posted by GMPartsGiant Specialist
- See expert answers on similar Dimmer Switch
- Q:How do you reinstall the switch of the 1982 Oldsmobile Omega? Posted by Customer
- A:To reinstall the switch, you need to follow the reverse of the removal procedure.Posted by GMPartsGiant Specialist
- See expert answers on similar Headlight Switch
- Q:How do you disconnect the negative battery cable and remove the switch on Buick Skylark,Oldsmobile Omega and Pontiac Phoenix? Posted by Customer
- A:To disconnect the negative battery cable, remove the instrument panel bezel, disconnect the wiring at the steering column, and remove the wiper switch. To reinstall, follow the reverse order of the removal procedure.Posted by GMPartsGiant Specialist
- Q:How do you remove the steering column trim cover of the 1984 Oldsmobile Omega? Posted by Customer
- A:Remove it from the underside of the dash.Posted by GMPartsGiant Specialist
- See expert answers on similar Dimmer Switch
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