Starter for GMC Acadia (2007-2016) 3.6L
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High-Torque Starter Motor for 2007-2016 GMC Acadia (Lambda)
What it Does: The Starter Motor delivers high-torque cranking to the 2007-2016 GMC Acadia 3.6L V6 to eliminate slow-crank issues and restore immediate engine ignition under all operating temperatures.
The Stock GMC Acadia Starter Heat Soak & Internal Wear
Mounted tightly against the transverse 3.6L engine block on the GM Lambda platform, the factory starter operates in extreme thermal conditions adjacent to exhaust runners and catalytic converters. Over repeated heat cycles, OEM solenoid contacts pit, internal brush assemblies wear thin, and armature insulation degrades. This leads to common failure symptoms: intermittent no-starts, high electrical resistance causing rapid solenoid clicking, labored cranking, or starter free-spin when the drive gear fails to engage the flexplate ring gear.
The Engineering Solution
Engineered as a direct replacement for OEM part numbers 12588493, 12598756, and 12598757, this heavy-duty starter utilizes a 1.4 kW permanent magnet gear reduction (PMGR) architecture. The PMGR design yields substantially higher breakaway torque while pulling fewer cold cranking amps from the battery. Constructed with high-conductivity copper windings, a heat-treated 12-tooth pinion gear, and an upgraded solenoid housing, it resists thermal degradation and contact oxidation. Every unit is dyno-tested to verify rotational speed and pull-in amperage before leaving the facility.
What's Included
- 1x Starter Motor
Technical Specifications
| Fitment | 2007-2016 GMC Acadia |
|---|---|
| Engine / Chassis | 3.6L High Feature V6 (LY7 / LLT) / Lambda |
| Stock Output | 275-288 hp / 251-270 lb-ft |
| Replaces OEM Part # | 17986, 17997, 12588493, 12598756, 12598757 |
Compatibility
- 2007-2016 GMC Acadia 3.6L V6 (SL, SLE, SLT, Denali)
Frequently Asked Questions & Fitment Warnings
Does this fit the Lambda Acadia?
Yes, this is a direct fit for the 2007-2016 GMC Acadia equipped with the 3.6L LY7 or LLT V6 engine.
What should I check before installing this replacement starter?
Always verify the 12V battery holds a full charge and all cable terminals are clean and torqued, as excessive voltage drop mimics a defective starter motor.
The GMC Workhorse Standard
Built to endure the daily demands of towing, cargo hauling, and extreme temperature swings, this heavy-duty starter ensures the full-size Lambda chassis cranks reliably without electrical hesitation.
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