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Pioneer Cables 747020 Automatic Transmission Modulator ValveOE Quality 60-Day Returns
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Part #: 747020

Pioneer Cables 747020 Automatic Transmission Modulator Valve

⚙️ 156 vehicles fit this part
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, Suzuki, Geo, GMC, Pontiac, Fiat, Peugeot, and Opel, Tracker, Sidekick, LLV, Blazer, Chevette, G10, G20, G30, R10, R10 Suburban, R20, R20 Suburban, R30, S10, S10 Blazer, V10, V20, V20 Suburban, V30, G1500, G2500, G3500, Jimmy, R1500, R1500 Suburban, R2500, R2500 Suburban, R3500, S15, S15 Jimmy, V1500, V1500 Suburban, V2500, V2500 Suburban, V3500, Acadian, T1000, 124, C30, Brava, 128, 604, 131, Luv Pickup, 1900, Manta, Opel, Kadett, and Deluxe
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Reliable Automatic Transmission Modulator Valve for Select GM and Suzuki Models

The Pioneer Cables 747020 Automatic Transmission Modulator Valve is designed to provide precise control of transmission line pressure for smooth shifting and optimal performance. Compatible with a range of Chevrolet, Geo, GMC, Pontiac, and Suzuki vehicles, this modulator valve ensures consistent transmission operation in various driving conditions.

  • Compatible with Chevrolet, Geo, GMC, Pontiac, and Suzuki models including Blazer, Jimmy, S10, Tracker, and more
  • Part number 747020 ensures exact fit and function for specified vehicles
  • Controls transmission line pressure for improved shift quality
  • Durable construction designed for long service life in automatic transmissions
  • Direct replacement for original equipment modulator valves

Product Details and Compatibility

The Pioneer Cables 747020 modulator valve is engineered to fit a wide range of automatic transmissions found in Chevrolet trucks and SUVs such as the Blazer, S10, and various R-series models, as well as Geo models like the Tracker and Pontiac vehicles. It also fits Suzuki models including the Sidekick. This part plays a critical role in regulating vacuum pressure to the transmission, which directly affects shift timing and firmness. Using the correct modulator valve helps maintain transmission efficiency and prevents erratic shifting or slippage.

Common Transmission Issues Addressed by This Modulator Valve

  • Erratic or harsh shifting in automatic transmissions
  • Delayed gear engagement or slipping
  • Transmission line pressure inconsistencies
  • Vacuum leaks affecting transmission modulation
  • Reduced transmission performance due to faulty modulator valve

Installation Notes and Tips

When installing the Pioneer Cables 747020 modulator valve, ensure the vacuum line is properly connected and free of cracks or leaks. It is recommended to inspect the transmission vacuum system and clean the valve bore before installation. Proper torque specifications should be followed to avoid damage. This part is a direct replacement and does not require modifications for fitment on compatible Chevrolet, Geo, GMC, Pontiac, and Suzuki models.

Quality Assurance and Warranty Information

Pioneer Cables manufactures the 747020 modulator valve to meet or exceed OEM standards for durability and performance. While specific warranty details may vary, this part is backed by quality control processes to ensure reliable operation in automatic transmissions. Using a genuine replacement part like the 747020 helps maintain transmission integrity and vehicle drivability.

This part fits 156 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
1998ChevroletTracker1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1998ChevroletTracker1.6LL4N/AADJ 15-16 - EDA 1.95 - broached - blue
1998SuzukiSidekickN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1997GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1997GeoTrackerN/AADJ 15-16 - EDA 1.95 - broached - blue
1996GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1996GeoTrackerN/AADJ 15-16 - EDA 1.95 - broached - blue
1995GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1994GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits THM180, THM180C
1993GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits THM180, THM180C
1992GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1991ChevroletTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1991GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1990ChevroletTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1990GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1989ChevroletTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1989GeoTrackerN/AADJ 15-16 - EDA 1.95 - Screw in - dual blue
1987ChevroletBlazerAutomaticN/AAdjustable Dual Blue
1987ChevroletChevetteN/AAdjustable Dual Blue
1987ChevroletG105.7LV8N/AAdjustable Dual Blue
1987ChevroletG105.0LV8N/AAdjustable Dual Blue
1987ChevroletG104.3LV6N/AAdjustable Dual Blue
1987ChevroletG206.2LV8N/AAdjustable Dual Blue
1987ChevroletG205.7LV8N/AAdjustable Dual Blue
1987ChevroletG205.0LV8N/AAdjustable Dual Blue
1987ChevroletG204.3LV6N/AAdjustable Dual Blue
1987ChevroletG306.2LV8N/AAdjustable Dual Blue
1987ChevroletG305.7LV8N/AAdjustable Dual Blue
1987ChevroletG304.3LV6N/AAdjustable Dual Blue
1987ChevroletR106.2LV8N/AAdjustable Dual Blue
1987ChevroletR105.7LV8N/AAdjustable Dual Blue
1987ChevroletR105.0LV8N/AAdjustable Dual Blue
1987ChevroletR104.3LV6N/AAdjustable Dual Blue
1987ChevroletR10 SuburbanN/AAdjustable Dual Blue; Only Fits THM180C/MD2
1987ChevroletR207.4LV8N/AAdjustable Dual Blue
1987ChevroletR206.2LV8N/AAdjustable Dual Blue
1987ChevroletR205.7LV8N/AAdjustable Dual Blue
1987ChevroletR205.0LV8N/AAdjustable Dual Blue
1987ChevroletR204.8LL6N/AAdjustable Dual Blue
1987ChevroletR204.3LV6N/AAdjustable Dual Blue
1987ChevroletR20 Suburban7.4LV8N/AAdjustable Dual Blue
1987ChevroletR20 Suburban6.2LV8N/AAdjustable Dual Blue
1987ChevroletR20 Suburban5.7LV8N/AAdjustable Dual Blue
1987ChevroletR307.4LV8N/AAdjustable Dual Blue
1987ChevroletR306.2LV8N/AAdjustable Dual Blue
1987ChevroletR305.7LV8N/AAdjustable Dual Blue
1987ChevroletR304.8LL6N/AAdjustable Dual Blue
1987ChevroletS10AutomaticN/AAdjustable Dual Blue
1987ChevroletS10 BlazerAutomaticN/AAdjustable Dual Blue
1987ChevroletV106.2LV8N/AAdjustable Dual Blue
1987ChevroletV105.7LV8N/AAdjustable Dual Blue
1987ChevroletV105.0LV8N/AAdjustable Dual Blue
1987ChevroletV104.3LV6N/AAdjustable Dual Blue
1987ChevroletV206.2LV8N/AAdjustable Dual Blue
1987ChevroletV205.7LV8N/AAdjustable Dual Blue
1987ChevroletV204.8LL6N/AAdjustable Dual Blue
1987ChevroletV20 Suburban7.4LV8N/AAdjustable Dual Blue
1987ChevroletV20 Suburban6.2LV8N/AAdjustable Dual Blue
1987ChevroletV20 Suburban5.7LV8N/AAdjustable Dual Blue
1987ChevroletV307.4LV8N/AAdjustable Dual Blue
1987ChevroletV306.2LV8N/AAdjustable Dual Blue
1987ChevroletV305.7LV8N/AAdjustable Dual Blue
1987ChevroletV304.8LL6N/AAdjustable Dual Blue
1987GMCG15005.7LV8N/AAdjustable Dual Blue
1987GMCG15005.0LV8N/AAdjustable Dual Blue
1987GMCG15004.3LV6N/AAdjustable Dual Blue
1987GMCG25006.2LV8N/AAdjustable Dual Blue
1987GMCG25005.7LV8N/AAdjustable Dual Blue
1987GMCG25005.0LV8N/AAdjustable Dual Blue
1987GMCG25004.3LV6N/AAdjustable Dual Blue
1987GMCG35006.2LV8N/AAdjustable Dual Blue
1987GMCG35005.7LV8N/AAdjustable Dual Blue
1987GMCG35004.3LV6N/AAdjustable Dual Blue
1987GMCJimmyAutomaticN/AAdjustable Dual Blue
1987GMCR15006.2LV8N/AAdjustable Dual Blue
1987GMCR15005.7LV8N/AAdjustable Dual Blue
1987GMCR15005.0LV8N/AAdjustable Dual Blue
1987GMCR15004.3LV6N/AAdjustable Dual Blue
1987GMCR1500 SuburbanN/AAdjustable Dual Blue; Only Fits THM180C/MD2
1987GMCR25007.4LV8N/AAdjustable Dual Blue
1987GMCR25006.2LV8N/AAdjustable Dual Blue
1987GMCR25005.7LV8N/AAdjustable Dual Blue
1987GMCR25005.0LV8N/AAdjustable Dual Blue
1987GMCR25004.8LL6N/AAdjustable Dual Blue
1987GMCR25004.3LV6N/AAdjustable Dual Blue
1987GMCR2500 Suburban7.4LV8N/AAdjustable Dual Blue
1987GMCR2500 Suburban6.2LV8N/AAdjustable Dual Blue
1987GMCR2500 Suburban5.7LV8N/AAdjustable Dual Blue
1987GMCR35007.4LV8N/AAdjustable Dual Blue
1987GMCR35006.2LV8N/AAdjustable Dual Blue
1987GMCR35005.7LV8N/AAdjustable Dual Blue
1987GMCR35004.8LL6N/AAdjustable Dual Blue
1987GMCS15AutomaticN/AAdjustable Dual Blue
1987GMCS15 JimmyAutomaticN/AAdjustable Dual Blue
1987GMCV15006.2LV8N/AAdjustable Dual Blue
1987GMCV15005.7LV8N/AAdjustable Dual Blue
1987GMCV15005.0LV8N/AAdjustable Dual Blue
1987GMCV15004.3LV6N/AAdjustable Dual Blue
1987GMCV1500 SuburbanN/AAdjustable Dual Blue; Only Fits THM180C/MD2
1987GMCV25006.2LV8N/AAdjustable Dual Blue
1987GMCV25005.7LV8N/AAdjustable Dual Blue
1987GMCV25004.8LL6N/AAdjustable Dual Blue
1987GMCV2500 Suburban6.2LV8N/AAdjustable Dual Blue
1987GMCV2500 Suburban5.7LV8N/AAdjustable Dual Blue
1987GMCV35007.4LV8N/AAdjustable Dual Blue
1987GMCV35006.2LV8N/AAdjustable Dual Blue
1987GMCV35005.7LV8N/AAdjustable Dual Blue
1987GMCV35004.8LL6N/AAdjustable Dual Blue
1987PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1987PontiacT10001.6LL4N/AAdjustable Dual Blue
1986ChevroletChevetteN/AAdjustable Dual Blue
1986PontiacAcadian1.8LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1986PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1986PontiacT10001.6LL4N/AAdjustable Dual Blue
1985ChevroletChevetteN/AAdjustable Dual Blue
1985PontiacAcadian1.8LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1985PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1985PontiacT10001.6LL4N/AAdjustable Dual Blue
1984ChevroletChevetteN/AAdjustable Dual Blue
1984PontiacAcadian1.8LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1984PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1984PontiacT10001.6LL4N/AAdjustable Dual Blue
1983ChevroletChevetteN/AAdjustable Dual Blue
1983PontiacAcadian1.8LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1983PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1983PontiacT10001.6LL4N/AAdjustable Dual Blue
1982ChevroletC307.4LV8N/AADJ 12.5-18 - EDA 1.75 - Red Stripe - w/o EGR; Only Fits 3L80, THM425, THM475/M40
1982ChevroletC306.2LV8N/AADJ 12.5-18 - EDA 1.75 - Red Stripe - w/o EGR; Only Fits 3L80, THM425, THM475/M40
1982ChevroletC305.7LV8N/AADJ 12.5-18 - EDA 1.75 - Red Stripe - w/o EGR; Only Fits 3L80, THM425, THM475/M40
1982ChevroletC304.8LL6N/AADJ 12.5-18 - EDA 1.75 - Red Stripe - w/o EGR; Only Fits 3L80, THM425, THM475/M40
1982ChevroletC304.1LL6N/AADJ 12.5-18 - EDA 1.75 - Red Stripe - w/o EGR; Only Fits 3L80, THM425, THM475/M40
1982ChevroletChevetteN/AAdjustable Dual Blue
1982PontiacAcadian1.8LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1982PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1982PontiacT10001.6LL4N/AAdjustable Dual Blue
1981ChevroletChevette1.8LL4N/AAdjustable Dual Blue
1981ChevroletChevette1.6LL4N/AAdjustable Dual Blue
1981PontiacAcadian1.8LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1981PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1981PontiacT10001.6LL4N/AAdjustable Dual Blue
1980ChevroletChevette1.6LL4N/AAdjustable Dual Blue
1980PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1979ChevroletChevette1.6LL4N/AAdjustable Dual Blue
1979PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1979PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - broached - blue; Only Fits 3L30, THM180, THM180C
1978ChevroletChevette1.6LL4N/AAdjustable Dual Blue
1978PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, THM180, THM180C
1978PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - broached - blue; Only Fits 3L30, THM180, THM180C
1977ChevroletChevette1.6LL4N/AAdjustable Dual Blue
1977ChevroletChevette1.4LL4N/AAdjustable Dual Blue
1977PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, 4L30-E, THM180, THM180C
1977PontiacAcadian1.6LL4N/AADJ 15-16 - EDA 1.95 - broached - blue; Only Fits 3L30, 4L30-E, THM180, THM180C
1977PontiacAcadian1.4LL4N/AADJ 15-16 - EDA 1.95 - Screw in - dual blue; Only Fits 3L30, 4L30-E, THM180, THM180C
1977PontiacAcadian1.4LL4N/AADJ 15-16 - EDA 1.95 - broached - blue; Only Fits 3L30, 4L30-E, THM180, THM180C
1976ChevroletChevetteAutomaticN/AAdjustable Dual Blue
1976PontiacAcadianN/AOnly Fits 3L30, THM180, THM180C

* 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:

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

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