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1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981, 1980, 1979 GMC P3500 Hummer Starter Motor

1979 - 1999 GMC P3500 Hummer Starter Motor (Proform) NEW

$ 223 .89

Product Notes

High-Torque Starter; Gear Reduction Type; 1.4KW; Compression Ratio:11 : 1; Finish:Natural; Flywheel Tooth Number:153 and 168-Tooth; Gear Reduction Ratio:3.75:1; Material:Aluminum/Steel; Mounting Plate:Straight Bolt Mounting Plate

High-torque, gear-reduction design. 100% NEW, not rebuilt. Offset design results in more clearance between the oil pan and the starter, and can be rotated for additional chassis clearance. The high-torque, high-output motor spins the engine over faster than stock starters, delivering 40-50% more cranking power. 3.75-to-1 sealed gear-reduction drive and full ball bearing construction. Includes shims to set pinion-gear engagement (when necessary). Approved by all leading sanctioning organizations. Fits all Chevy V6 and small and big block V 8 engines using 153 or 168 tooth flywheels. Heavy-duty PROFORM P/N 66258 weighs 1-1/2 lbs. more and is 1" longer than P/N 66256.
Brand: Proform
Condition: New
See Other GMC P3500 Starter Motors
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Specifications & Info


Attribute Value
Applications Chevy Small Block Engines, Chevy Big Block Engines And Chevy V6 Engines
Category Starters
Compression Ratio 11 : 1
Family Mini Hitachi
Feature/Benefit High-torque, Gear-reduction Design.
Finish Natural
Flywheel Tooth Number 153 & 168-tooth
Gear Reduction Ratio 11.0:1, 3.75:1
Grade Type Performance
Make Chevrolet
Material Aluminum/steel
Mounting Plate Straight Bolt Mounting Plate
Mounting Type Flange
Nose Cone Type Open Nose
Power Output 1.4 Kw
Rotation Standard
Solenoid Attached Yes

Vehicle Fitment Guide

This part fits the following vehicles:

GMC 1 model (tapclick to expand)(tapclick to hide)
P3500 1979-1999 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Cab & Chassis 1997 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Base Cab & Chassis 1994 - 1999 V8 6.5L DIESEL RWD Automatic & Manual
Base Cab & Chassis 1991 L4 3.9L DIESEL Turbo RWD Automatic & Manual
Base Cab & Chassis 1991 - 1999 V6 4.3L RWD Automatic & Manual
Base Cab & Chassis 1991 - 1999 V8 5.7L RWD Automatic & Manual
Base Cab & Chassis 1991 - 1993 V8 6.2L DIESEL RWD Automatic & Manual
Base Cab & Chassis 1991 - 1999 V8 7.4L RWD Automatic & Manual
Base Motorhome - Cutaway 1994 - 1995 V8 6.5L DIESEL RWD Automatic & Manual
Base Motorhome - Cutaway 1993 - 1995 V6 4.3L RWD Automatic & Manual
Base Motorhome - Cutaway 1993 - 1995 V8 5.7L RWD Automatic & Manual
Base Motorhome - Cutaway 1993 V8 6.2L DIESEL RWD Automatic & Manual
Base Motorhome - Cutaway 1993 - 1995 V8 7.4L RWD Automatic & Manual
Base Motorhome - Stripped Chassis 1997 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Base Motorhome - Stripped Chassis 1994 - 1999 V8 6.5L DIESEL RWD Automatic & Manual
Base Motorhome - Stripped Chassis 1990 - 1991 L4 3.9L DIESEL Turbo RWD Automatic & Manual
Base Motorhome - Stripped Chassis 1990 - 1999 V6 4.3L RWD Automatic & Manual
Base Motorhome - Stripped Chassis 1990 - 1999 V8 5.7L RWD Automatic & Manual
Base Motorhome - Stripped Chassis 1990 - 1993 V8 6.2L DIESEL RWD Automatic & Manual
Base Motorhome - Stripped Chassis 1990 - 1999 V8 7.4L RWD Automatic & Manual
Base Standard Cargo Van 1994 V8 6.5L DIESEL RWD Automatic & Manual
Base Standard Cargo Van 1991 L4 3.9L DIESEL Turbo RWD Automatic & Manual
Base Standard Cargo Van 1991 - 1994 V6 4.3L RWD Automatic & Manual
Base Standard Cargo Van 1991 - 1994 V8 5.7L RWD Automatic & Manual
Base Standard Cargo Van 1991 - 1993 V8 6.2L DIESEL RWD Automatic & Manual
Base Standard Cargo Van 1991 - 1994 V8 7.4L RWD Automatic & Manual
Base Stripped Chassis 1997 - 1999 V8 6.5L DIESEL Turbo RWD Automatic & Manual
Base Stripped Chassis 1994 - 1999 V8 6.5L DIESEL RWD Automatic & Manual
Base Stripped Chassis 1990 - 1999 V6 4.3L RWD Automatic & Manual
Base Stripped Chassis 1989 - 1991 L4 3.9L DIESEL Turbo RWD Automatic & Manual
Base Stripped Chassis 1982 - 1993 V8 6.2L DIESEL RWD Automatic & Manual
Base Stripped Chassis 1979 - 1989 L6 4.8L RWD Automatic & Manual
Base Stripped Chassis 1979 - 1999 V8 5.7L RWD Automatic & Manual
Base Stripped Chassis 1979 - 1999 V8 7.4L RWD Automatic & Manual
Value Van Delivery Van 1990 L4 3.9L DIESEL Turbo RWD Automatic & Manual
Value Van Delivery Van 1990 V6 4.3L RWD Automatic & Manual
Value Van Delivery Van 1982 - 1990 V8 6.2L DIESEL RWD Automatic & Manual
Value Van Delivery Van 1979 - 1989 L6 4.8L RWD Automatic & Manual
Value Van Delivery Van 1979 - 1990 V8 5.7L RWD Automatic & Manual
Value Van Delivery Van 1979 - 1990 V8 7.4L RWD Automatic & Manual
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

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Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Return Policy

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.

Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.
High-torque, gear-reduction design. 100% NEW, not rebuilt. Offset design results in more clearance between the oil pan and the starter, and can be rotated for additional chassis clearance. The high-torque, high-output motor spins the engine over faster than stock starters, delivering 40-50% more cranking power. 3.75-to-1 sealed gear-reduction drive and full ball bearing construction. Includes shims to set pinion-gear engagement (when necessary). Approved by all leading sanctioning organizations. Fits all Chevy V6 and small and big block V 8 engines using 153 or 168 tooth flywheels. Heavy-duty PROFORM P/N 66258 weighs 1-1/2 lbs. more and is 1" longer than P/N 66256.

Fits Years: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999

Fits Models: P3500

Go-Parts Garage · Featured Guide

Choosing the Right Starter Motor for Your 1979-1999 GMC P3500

Don't get stranded by a failing starter—understand the symptoms, brands, and replacement costs for your P3500 workhorse.

Read Full Guide →

⚠️ Related Trouble Codes (OBD-II)

1 matching guide

If your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.

↑ A single part can trigger multiple related trouble codes. Each guide is vehicle- and code-specific.
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