HomeHVAC > Motors, Core, Case and Related ComponentsStandard Ignition RU-630 HVAC Blower Motor Resistor
Part #: RU-630

Standard Ignition RU-630 HVAC Blower Motor Resistor

⚙️ 163 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, Oldsmobile, Buick, and Pontiac, Blazer, R1500 Suburban, R2500 Suburban, R3500, V1500 Suburban, V2500 Suburban, V3500, Jimmy, R2500, R10 Suburban, R20, R20 Suburban, R30, V10 Suburban, V20 Suburban, V30, R1500, V1500, V2500, C10, C20, C30, K10, K20, K30, C1500, C2500, C3500, K1500, K2500, K3500, K5 Blazer, S15 Jimmy, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, Toronado, Electra, Estate Wagon, LeSabre, Riviera, Caprice, 98, Delta 88, Bonneville, and Grand Safari
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Overview of Standard Ignition HVAC Blower Motor Resistor RU-630

The Standard Ignition HVAC Blower Motor Resistor RU-630 is designed to regulate the blower motor speeds in select General Motors vehicles. This resistor supports 3 to 5 speed settings, ensuring precise control of your vehicle's heating and cooling system.

  • Attachment method: Screw mount for secure installation
  • Connector gender: No connector included
  • Hardware and wiring harness not included
  • Terminal type: 4 male blade terminals
  • Compatible with multiple GM makes and models

Detailed Product Description

The RU-630 blower motor resistor from Standard Ignition is engineered to provide reliable performance in HVAC systems of Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. It features a screw attachment method for a firm and stable fitment. The resistor supports 3 to 5 blower motor speeds, allowing for variable airflow control inside the cabin. This part comes without a wiring harness or mounting brackets, so it is intended for direct replacement where existing connectors and hardware are reused. The four male blade terminals ensure proper electrical connection with the vehicle's wiring.

Compatible Vehicles and Applications

This blower motor resistor is compatible with a wide range of GM trucks and SUVs, including Chevrolet Blazer, C10, C1500, and Suburban models; GMC Jimmy, K5 Blazer, and Sierra series; Buick LeSabre and Riviera; Oldsmobile Delta 88; Pontiac Bonneville and Grand Prix; and other related models from the late 1990s and early 2000s. The RU-630 is suitable for vehicles requiring a 3-5 speed blower motor resistor with blade terminals and screw attachment.

Common Issues Addressed by RU-630 Blower Motor Resistor

  • Inconsistent blower motor speeds or loss of certain speed settings
  • Blower motor only working on high speed
  • Intermittent or no airflow from HVAC vents
  • Overheating or electrical resistance failure in blower motor circuit
  • HVAC blower motor resistor failure causing climate control issues

Installation Notes and Tips

  • Ensure vehicle ignition is off before installation
  • Remove the old resistor by unscrewing the mounting screws
  • Check the condition of the wiring harness and connectors before installing the new resistor
  • Align the resistor terminals properly to avoid connection issues
  • Do not attempt to install without the proper tools for screw attachment

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The RU-630 blower motor resistor undergoes quality control testing to ensure durability and reliable operation. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship.

BrandStandard Ignition
Part NumberRU-630
Attachment MethodScrew
Connector GenderNo Connector
Hardware IncludedNo
Harness Length - cmNo wire
Harness Length - inchesNo wire
Mounting Bracket(s) IncludedNo
Number Of Speeds3-5 Speed
Terminal GenderMale
Terminal TypeBlade
Wiring Harness IncludedNo

This part fits 163 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1991ChevroletBlazerN/Aw/o AC; 4 Term.
1991ChevroletR1500 SuburbanN/Awithout air conditioning
1991ChevroletR2500 SuburbanN/Awithout air conditioning
1991ChevroletR3500N/Aw/o AC; 4 Term.
1991ChevroletV1500 SuburbanN/Awithout air conditioning
1991ChevroletV2500 SuburbanN/Awithout air conditioning
1991ChevroletV3500N/Aw/o AC; 4 Term.
1991GMCJimmy6.2LV8N/Awithout air conditioning
1991GMCJimmy5.7LV8N/Awithout air conditioning
1991GMCR1500 SuburbanN/Awithout air conditioning
1991GMCR2500 SuburbanN/Awithout air conditioning
1991GMCR3500N/Aw/o AC; 4 Term.
1991GMCV1500 SuburbanN/Awithout air conditioning
1991GMCV2500 SuburbanN/Awithout air conditioning
1991GMCV3500N/Aw/o AC; 4 Term.
1990ChevroletBlazerN/Aw/o AC; 4 Term.
1990ChevroletR1500 SuburbanN/Awithout air conditioning
1990ChevroletR2500 SuburbanN/Awithout air conditioning
1990ChevroletR3500N/Aw/o AC
1990ChevroletV1500 SuburbanN/Awithout air conditioning
1990ChevroletV2500 SuburbanN/Awithout air conditioning
1990ChevroletV3500N/Aw/o AC
1990GMCJimmyN/Awithout air conditioning
1990GMCR1500 SuburbanN/Awithout air conditioning
1990GMCR2500 SuburbanN/Awithout air conditioning
1990GMCR3500N/Aw/o AC; 4 Term.
1990GMCV1500 SuburbanN/Awithout air conditioning
1990GMCV2500 SuburbanN/Awithout air conditioning
1990GMCV3500N/Aw/o AC; 4 Term.
1989ChevroletBlazerN/Aw/o AC; 4 Term.
1989ChevroletR1500 SuburbanN/Awithout air conditioning
1989ChevroletR2500N/Aw/o AC; 4 Term.
1989ChevroletR2500 SuburbanN/Awithout air conditioning
1989ChevroletR3500N/Aw/o AC; 4 Term.
1989ChevroletV1500 SuburbanN/Awithout air conditioning
1989ChevroletV2500 SuburbanN/Awithout air conditioning
1989ChevroletV3500N/Aw/o AC; 4 Term.
1989GMCJimmyN/Awithout air conditioning
1989GMCR1500 SuburbanN/Awithout air conditioning
1989GMCR2500N/Aw/o AC; 4 Term.
1989GMCR2500 SuburbanN/Awithout air conditioning
1989GMCR3500N/Aw/o AC; 4 Term.
1989GMCV1500 SuburbanN/Awithout air conditioning
1989GMCV2500 SuburbanN/Awithout air conditioning
1989GMCV3500N/Aw/o AC; 4 Term.
1988ChevroletBlazerN/Aw/o AC; 4 Term.
1988ChevroletR10 SuburbanN/Awithout air conditioning
1988ChevroletR20N/Aw/o AC; 4 Term.
1988ChevroletR20 SuburbanN/Awithout air conditioning
1988ChevroletR30N/Aw/o AC; 4 Term.
1988ChevroletV10 SuburbanN/Awithout air conditioning
1988ChevroletV20 SuburbanN/Awithout air conditioning
1988ChevroletV30N/Aw/o AC; 4 Term.
1988GMCJimmyN/Awithout air conditioning
1988GMCR1500 SuburbanN/Awithout air conditioning
1988GMCR2500N/Aw/o AC; 4 Term.
1988GMCR2500 SuburbanN/Awithout air conditioning
1988GMCR3500N/Aw/o AC; 4 Term.
1988GMCV1500 SuburbanN/Awithout air conditioning
1988GMCV2500 SuburbanN/Awithout air conditioning
1988GMCV3500N/Aw/o AC; 4 Term.
1987ChevroletBlazerN/Aw/o AC; 4 Term.
1987ChevroletR10 SuburbanN/Aw/o AC; 4 Term.
1987ChevroletR20 SuburbanN/Aw/o AC; 4 Term.
1987ChevroletV10 SuburbanN/Aw/o AC; 4 Term.
1987ChevroletV20 SuburbanN/Aw/o AC; 4 Term.
1987GMCJimmyN/Aw/o AC; 4 Term.
1987GMCR1500N/Aw/o AC; 4 Term.
1987GMCR1500 SuburbanN/Aw/o AC; 4 Term.
1987GMCR2500N/Aw/o AC; 4 Term.
1987GMCR2500 SuburbanN/Aw/o AC; 4 Term.
1987GMCR3500N/Aw/o AC; 4 Term.
1987GMCV1500N/Aw/o AC; 4 Term.
1987GMCV1500 SuburbanN/Aw/o AC; 4 Term.
1987GMCV2500N/Aw/o AC; 4 Term.
1987GMCV2500 SuburbanN/Aw/o AC; 4 Term.
1987GMCV3500N/Aw/o AC; 4 Term.
1986ChevroletC10N/Aw/o AC; w/ Heavy Duty Heater
1986ChevroletC20N/Aw/o AC; w/ Heavy Duty Heater
1986ChevroletC30N/Aw/o AC; w/ Heavy Duty Heater
1986ChevroletK10N/Aw/o AC; w/ Heavy Duty Heater
1986ChevroletK20N/Aw/o AC; w/ Heavy Duty Heater
1986ChevroletK30N/Aw/o AC; w/ Heavy Duty Heater
1986GMCC1500N/Aw/o AC; 4 Term.
1986GMCC2500N/Aw/o AC; 4 Term.
1986GMCC3500N/Aw/o AC; 4 Term.
1986GMCK1500N/Aw/o AC; 4 Term.
1986GMCK2500N/Aw/o AC; 4 Term.
1986GMCK3500N/Aw/o AC; 4 Term.
1985ChevroletC10N/Aw/o AC; w/ Heavy Duty Heater
1985ChevroletC20N/Aw/o AC; w/ Heavy Duty Heater
1985ChevroletC30N/Aw/o AC; w/ Heavy Duty Heater
1985ChevroletK10N/Aw/o AC; w/ Heavy Duty Heater
1985ChevroletK20N/Aw/o AC; w/ Heavy Duty Heater
1985ChevroletK30N/Aw/o AC; w/ Heavy Duty Heater
1985GMCC1500N/Aw/o AC; 4 Term.
1985GMCC2500N/Aw/o AC; 4 Term.
1985GMCC3500N/Aw/o AC; 4 Term.
1985GMCK1500N/Aw/o AC; 4 Term.
1985GMCK2500N/Aw/o AC; 4 Term.
1985GMCK3500N/Aw/o AC; 4 Term.
1984ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1984GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1984GMCS15 JimmyN/Aw/ Heavy Duty Heater; w/ AC
1983ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1983GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1983GMCS15 JimmyN/Aw/ Heavy Duty Heater; w/ AC
1982ChevroletC10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1982ChevroletC20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1982ChevroletK10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1982ChevroletK20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1982ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1982GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1981ChevroletC10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1981ChevroletC20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1981ChevroletK10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1981ChevroletK20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1981ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1981GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1980ChevroletC10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1980ChevroletC20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1980ChevroletK10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1980ChevroletK20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1980ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1980GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1979ChevroletC10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1979ChevroletC20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1979ChevroletK10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1979ChevroletK20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1979ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1979GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1978OldsmobileToronadoN/A
1977ChevroletC10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1977ChevroletC20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1977ChevroletK10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1977ChevroletK20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1977ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1977GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1977OldsmobileToronadoN/AHVAC Blower Motor Resistor Harness with AC - Voltage Regulator
1976BuickLeSabreN/AHVAC Blower Motor Resistor Harness with AC - Voltage Regulator
1976BuickRivieraN/AHVAC Blower Motor Resistor Harness with AC - Voltage Regulator
1976ChevroletC10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1976ChevroletC20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1976ChevroletCapriceN/AHVAC Blower Motor Resistor Harness with AC - Voltage Regulator
1976ChevroletK10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1976ChevroletK20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1976ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1976GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1976Oldsmobile98N/AHVAC Blower Motor Resistor Harness with AC - Voltage Regulator
1976OldsmobileCustom Cruiser7.5LV8N/A
1976OldsmobileDelta 88N/AHVAC Blower Motor Resistor Harness with AC - Voltage Regulator
1976OldsmobileToronadoN/AHVAC Blower Motor Resistor Harness with AC - Voltage Regulator
1976PontiacBonnevilleN/AHVAC Blower Motor Resistor Harness with AC - Voltage Regulator
1975ChevroletC10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1975ChevroletC20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1975ChevroletK10 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1975ChevroletK20 SuburbanN/Aw/ Heavy Duty Heater; w/ AC
1975ChevroletK5 BlazerN/Aw/ Heavy Duty Heater; w/ AC
1975GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1974ChevroletBlazerN/Aw/ Heavy Duty Heater; w/ AC
1974GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC
1973ChevroletBlazerN/Aw/ Heavy Duty Heater; w/ AC
1973GMCJimmyN/Aw/ Heavy Duty Heater; w/ AC

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2046339984013A129353-69315984-201BMRB10072BR530RU1320RUC1304

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.