GMC Acadia Fitment
The advertised Acadia range is:
- 2007 GMC Acadia 3.6L
- 2008 GMC Acadia 3.6L
- 2009 GMC Acadia 3.6L
- 2010 GMC Acadia 3.6L
- 2011 GMC Acadia 3.6L
- 2012 GMC Acadia 3.6L
- 2013 GMC Acadia 3.6L
- 2014 GMC Acadia 3.6L
- 2015 GMC Acadia 3.6L
- 2016 GMC Acadia 3.6L
Front-wheel-drive and all-wheel-drive compatibility should be confirmed through the OE starter number.
Do not automatically extend fitment to the redesigned 2017 Acadia. The 2017 model introduced a different platform and multiple engine choices.
Buick Enclave Fitment
The starter is advertised for select 2008–2017 Enclave models with the 3.6L V6.
Verify:
- Model year
- VIN engine code
- Front- or all-wheel drive
- Production date
- Original starter number
The 2018 Enclave was redesigned and should not be added without separate catalog confirmation.
Chevrolet Traverse Fitment
Potential advertised coverage includes first-generation Traverse models equipped with the 3.6L V6.
Likely range:
- 2009–2017 Chevrolet Traverse 3.6L
Verify the final application year and starter number before publication. The second-generation Traverse introduced substantial platform and powertrain changes.
Buick LaCrosse Fitment
The product title gives a broad 2008–2017 Buick LaCrosse range, but the LaCrosse was sold with several engines during that period.
Only compatible 3.0L or 3.6L V6 applications should be considered.
Do not assume compatibility with:
- 2.4L four-cylinder
- eAssist models
- Hybrid configurations
- Later turbocharged four-cylinder engines
- Vehicles with a different VIN engine code
Chevrolet Malibu Fitment
The Malibu nameplate covered multiple four-cylinder and V6 configurations. This starter should not be listed for every Malibu within a broad model-year range.
Potential compatibility is limited to selected 3.6L V6 applications.
Exclude unless separately confirmed:
- 2.4L four-cylinder
- 2.5L four-cylinder
- 1.5L turbo
- 2.0L turbo
- Malibu Hybrid
- Malibu Eco
- Other non-V6 configurations
Chevrolet Impala Fitment
The product title identifies the Chevrolet Impala but does not supply an exact year range.
Potential compatibility applies to select Impala models equipped with a compatible 3.6L V6. Verify:
- Model year
- VIN code
- Limited or redesigned body style
- Fleet configuration
- Original starter number
GM sold two different Impala generations concurrently for fleet and retail use during part of this period. Because apparently one Impala at a time would have made parts lookup too easy.
Cadillac Fitment
Cadillac SRX, STS and XTS models were offered with several engines.
Potential compatible configurations include selected:
- SRX 3.0L V6
- SRX 3.6L V6
- STS 3.6L V6
- XTS 3.6L V6
Do not automatically list the starter for:
- Cadillac V8 engines
- Turbocharged V6 applications without confirmation
- Hybrid configurations
- Different-generation models
- Vehicles using another GM starter number
Engine Fitment
The advertised engine range includes select:
- 3.0L GM High Feature V6
- 3.6L GM High Feature V6
The GM High Feature V6 family includes numerous versions with different:
- Engine codes
- Cylinder-head designs
- Fuel systems
- Mounting arrangements
- Transmissions
- Starter configurations
A matching displacement does not guarantee starter interchangeability.
Replacement Part Number
The primary supplied OE reference is:
- GM
12645298
Additional common 17986-series references may exist, but they should not be added without confirmation.
Before ordering, match:
1798617986N, if shown in the seller’s catalog- GM
12645298 - Original manufacturer number on the removed starter
Expected Specifications
The supplied description does not provide complete electrical or mechanical specifications.
Before publication, verify:
- Voltage
- Power rating
- Rotation
- Pinion tooth count
- Starter type
- Mounting-hole count
- Solenoid position
- Mounting hardware contents
Do not borrow specifications from another starter that happens to use a nearby Lester number.
Fitment Verification
Before ordering, compare:
- Vehicle year
- Make and model
- Engine displacement
- VIN engine code
- Production date
- Automatic-transmission configuration
- Original starter number
- Mounting-flange design
- Bolt-hole spacing
- Starter nose length
- Pinion tooth count
- Solenoid position
- Electrical-terminal layout
The NHTSA VIN decoder can help identify basic vehicle details, although the original starter should still be inspected.
New Replacement Construction
The manufacturer states that this starter is built using new premium components intended to meet or exceed original-equipment specifications.
Potential advantages include:
- New internal wear components
- Fresh solenoid contacts
- New bearings or bushings
- Consistent housing condition
- No core return requirement where sold as new
- Direct replacement on confirmed applications
“Meets or exceeds OEM specifications” remains a manufacturer claim unless supporting test documentation is supplied.
Manufacturing Quality Claims
The seller states that its factory:
- Received ISO/TS 16949 certification in 2008
- Transitioned to IATF 16949:2016
- Implemented Ford’s VRT quality-management system
- Uses standardized production and dimensional controls
The correct certification abbreviation is IATF, not “IAFT.”
Quality-system certification concerns manufacturing processes. It does not prove that every model named in a marketplace title uses the same starter.
Diagnosing Starter Failure
Common symptoms include:
- One click without cranking
- Rapid clicking
- Slow cranking
- Intermittent no-crank
- Starter spinning without engaging
- Grinding during startup
- Electrical burning odor
- Excessive current draw
These symptoms may also result from:
- Weak battery
- Corroded battery terminals
- Damaged battery cables
- Poor engine ground
- Faulty starter relay
- Ignition-switch problem
- Park/Neutral switch fault
- Body-control or immobilizer issue
- Damaged ring-gear teeth
- Internal engine damage
Diagnose the circuit before ordering parts. A starter cannot fix a dead battery, though online reviews will probably blame it for trying.
Battery and Voltage-Drop Testing
Before replacing the starter, check:
- Battery open-circuit voltage
- Battery load-test result
- Positive-cable voltage drop
- Negative-cable voltage drop
- Starter-trigger voltage
- Engine-to-body ground
- Battery-terminal condition
- Starter relay
- Relevant fuses
Testing voltage drop during cranking can reveal cable resistance that is invisible during a basic continuity test.
Installation Preparation
Before removing the original starter:
- Confirm the engine and VIN code.
- Record the original starter number.
- Verify GM number
12645298. - Disconnect the negative battery terminal.
- Photograph the electrical connections.
- Compare the new and original mounting flanges.
- Verify pinion and solenoid placement.
- Obtain the correct torque specifications.
- Confirm whether mounting hardware is included.
Installation Overview
A typical installation includes:
- Disconnecting the negative battery cable.
- Raising and securely supporting the vehicle if necessary.
- Removing underbody shields or braces.
- Labeling the starter wiring.
- Disconnecting the main battery cable and trigger wire.
- Supporting the original starter.
- Removing its mounting bolts.
- Comparing the original and replacement units.
- Inspecting visible flexplate teeth.
- Installing the new starter.
- Torquing the mounting hardware correctly.
- Reconnecting the electrical terminals.
- Securing the wiring away from exhaust components.
- Reinstalling all shields and braces.
- Reconnecting the battery and testing operation.
The main starter cable remains powered whenever the battery is connected. Disconnecting it prevents your ratchet from unexpectedly applying for a welding license.
Post-Installation Checks
After installation, verify:
- Strong, consistent cranking
- Immediate pinion engagement
- Immediate disengagement after startup
- No grinding
- No abnormal clicking
- Secure electrical connections
- Proper cable routing
- Normal charging-system voltage
- No warning indicators
Stop testing if grinding occurs. Repeated operation may damage the starter drive and flexplate.
Two-Year Warranty
The manufacturer advertises a two-year warranty.
Before purchasing, confirm:
- Warranty start date
- Proof-of-purchase requirements
- Labor reimbursement
- Return-shipping responsibility
- Diagnostic documentation
- Commercial or fleet exclusions
- Consequential-damage coverage
- Whether a replacement restarts the warranty period
Frequently Asked Questions
What vehicles does the 17986 starter fit?
It is advertised for select GMC Acadia, Buick Enclave and LaCrosse, Chevrolet Traverse, Malibu and Impala, Cadillac SRX, STS and XTS, and certain Pontiac, Saturn and Suzuki vehicles with compatible 3.0L or 3.6L V6 engines.
Does it fit every 2007–2016 GMC Acadia?
The listing claims that range, but the original starter number and engine code should still be verified.
Does it fit every Buick LaCrosse?
No. Only compatible 3.0L or 3.6L V6 applications should be considered. Four-cylinder and eAssist models are not confirmed.
Does it fit a four-cylinder Malibu?
No confirmed four-cylinder compatibility is provided.
Does it fit a Cadillac V8?
No. The advertised applications concern compatible 3.0L and 3.6L V6 engines.
Which OE number should I match?
The primary supplied GM number is 12645298.
Is it a new starter?
Yes. It is advertised as a new replacement starter.
What warranty is included?
The manufacturer advertises a two-year warranty.
Final Verdict
The 17986 starter provides a potential replacement for a large family of GM vehicles equipped with compatible 3.0- and 3.6-liter High Feature V6 engines. GM number 12645298 is the most important fitment reference.
The product title is too broad for a final catalog listing. Add exact years and engine codes for the LaCrosse, Malibu, Impala and Cadillac models, and identify the specific Pontiac, Saturn and Suzuki applications before publishing structured fitment data.
Visit My Pro Street for additional GM starter diagnostics, electrical testing and replacement guides.
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