Quick answer: Starter Motor Replacement on a 2010–2017 GMC Terrain is rated Advanced and takes about 2-3 hours. You'll need 9 tools for this job, and parts cost about $159. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name |
Part Number |
Price |
Buy |
| Starter Motor Assembly (ACDelco 337-1134 for 2.4L — confirm engine fitment for your 2010-2017 GMC Terrain before ordering) |
337-1134 |
$158.54 |
|
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Step-by-Step Instructions
Follow these steps carefully
1
Disconnect the battery and raise the vehicle if needed
Always disconnect the negative battery cable first. On the GMC Terrain, the starter is typically on the bellhousing — access may be from above or below. Chock wheels, raise and support on jack stands if working underneath. Wear gloves and eye protection.
🔧 Mechanic's note — Tom Becker
I chock the wheels before going underneath — I've seen a car shift on stands from skipping chocks, and it's not a sight you forget.
2
Locate the starter and disconnect wiring
Find the starter solenoid terminals. Remove the main battery cable nut and the solenoid trigger wire (often a push-on or small nut). Keep nuts and washers in order; tape the main cable away from the battery post.
3
Support the starter and remove mounting bolts
Support the starter body — it is heavy. Remove the mounting bolts (often two or three). Note any heat shields, brackets, or dowel alignment. Lower or lift the starter out of the bellhousing carefully.
4
Compare the new starter
Match clocking of the solenoid, nose length, and tooth count to the old unit. Transfer any heat shield or bracket if the new starter does not include it.
5
Install the new starter and reconnect cables
Seat the starter fully against the bellhousing, install bolts, and torque to spec. Reconnect the solenoid trigger wire and main battery cable; ensure ring terminals are clean and tight. Refit any shields.
🔧 Mechanic's note — Ray Delgado
I make sure the ring terminals are clean and tight — I've had a new starter click from a corroded terminal, and the 'bad starter' was just a bad connection.
6
Reconnect the battery and test cranking
Lower the vehicle if raised. Reconnect the negative battery cable. Attempt a start — cranking should be strong and even with no grinding. If it spins without engaging, recheck shim/alignment and bolt torque. Secure all wiring clear of hot exhaust.
🔧 Mechanic's note — Tom Becker
I secure all wiring clear of the hot exhaust before the test start — I've seen a wire droop onto a manifold, and the smell of melting insulation is unforgettable.
All Done!
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
- • Not disconnecting the battery before starting the repair
- • Forgetting to properly torque the starter motor bolts
- • Neglecting to reinstall the heat shield after replacement
