2009 Chevrolet Traverse (1st gen) · Known Issue
2009 Chevrolet Traverse Transmission Wave Plate Failure: What It Really Costs to Fix
Quick answer: 2009 Chevrolet Traverse transmission wave plate failure typically costs $1,800 to $3,500 at an independent shop, depending on which component failed.
Applies to: every version of this generation.
What the Issue Is
The six-speed automatic behind the 2009 Traverse has this platform's second well-known failure: the 3-5-R clutch wave plate, a thin sprung-steel disc, can crack or fracture, and because that clutch serves third, fifth and reverse, all three are lost together. The presentation is often sudden, a slip or flare, then no reverse in a parking lot, with forward driving limping on through the remaining gears. Debris from the broken plate can travel through the transmission, which decides whether the repair stays a clutch-section job or becomes a full rebuild.
GM documented it. Its bulletin 09-07-30-012, revised through 2012, covers no-reverse complaints with a check-engine light and code P0776, and special coverage 14404 (revised in 2015) extended the repair to 10 years or 120,000 miles on 2009 Traverses, 2007 to 2009 Acadia, Outlook and Enclave models and a range of 2007 to 2009 GM cars and crossovers with the 6T70 or 6T75, with dealers replacing the 3-5-reverse clutch plate at no charge. That coverage has now expired, and it stops at the 2009 Traverse.
For buyers, the reverse test is the cheapest transmission diagnostic there is: deliberate, repeated reverse engagements under light load, plus fluid condition and any repair paperwork. On a 2009, an invoice showing the plate was replaced under the special coverage, or a rebuild since, marks the best version of this drivetrain.
Symptoms to Watch For
- 1.Sudden loss of reverse, the signature event
- 2.Slip or flare in third or fifth before failure
- 3.Harsh or delayed reverse engagement developing over weeks
- 4.Metallic debris in the fluid at service
- 5.Check-engine light with code P0776
Real Repair Costs
Scope follows the debris: a clutch-section repair with a new plate anchors the low end when contamination stayed local; a full rebuild with converter the high. GM's special coverage paid for this on 2009 Traverses but has expired.
| Repair | Typical Cost (installed) |
|---|---|
| Wave plate + clutch section, new partdebris stayed local | $1,800-$2,500 |
| Full rebuild with converter | $2,500-$3,500 |
Major issue: budget for it. Ranges are US independent-shop estimates with quality parts. Use them as negotiation grounding, not a quote.
Mechanic's Tip: Spot It Before You Buy
Test reverse like it owes you money: several engagements, cold and warm, at least one on a slight incline, feeling for delay, flare or shudder each time. Add attention to third and fifth on the drive, accelerating steadily through the range and feeling for slip at those ratios. Then the paper trail: fluid condition where it can be checked, and any transmission work orders. A 2009 with an invoice for the plate under GM's special coverage, or a later rebuild, is the one to want; an untouched original deserves some plate risk in the price, smooth test drive or not.
The Bigger Ownership Picture
Beyond this specific issue, budget roughly $1,100-$1,700 per year for scheduled maintenance and likely out-of-warranty repairs on a 2009 Chevrolet Traverse. That is a typical US range from Avturo's ownership-cost table, an estimate rather than a quote, and it excludes insurance, fuel, and financing.
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Frequently Asked Questions
Why does the Traverse lose reverse gear?▼
The 3-5-R wave plate, a sprung-steel disc in the clutch pack that serves third, fifth and reverse, cracks or fractures and takes all three ratios at once. GM's bulletin lists no reverse and code P0776 among the symptoms, and its special coverage 14404 paid for the repair on 2009 Traverses for 10 years or 120,000 miles. That coverage has ended.
What does the wave plate repair cost?▼
$1,800 to $2,500 when the debris stayed local and a clutch-section repair with a new plate is enough; $2,500 to $3,500 for the full rebuild that traveling debris demands. Quality used or remanufactured transmissions compete with the top of that range, mileage and warranty depending.
Is there any warning before it fails?▼
Sometimes: weeks of harsher or delayed reverse engagement, slip or flare in third or fifth, or debris found at a fluid service. Often none, because the plate's final crack is a single event. That is why repeated reverse tests and the repair-paperwork question do the work that symptoms may never volunteer.
Do related GM crossovers share this failure?▼
Yes. GM's special coverage 14404 lists 2007 to 2009 Acadia, Saturn Outlook and Buick Enclave models alongside the 2009 Traverse, plus several 2007 to 2009 cars and small crossovers with the related 6T70, so the same tests apply across the family. The program stops at the 2009 model year.
Sources
The facts on this page were last checked against these documents on October 10, 2026. Programs and their coverage end; check the car's VIN with a dealer for what still applies.
- Warranty program: GM Special Coverage 14404A, cracked 3-5-R wave plate in 6T70/6T75 transmissions (2015, NHTSA copy) (static.nhtsa.gov)
- Service bulletin: GM bulletin 09-07-30-012F, no reverse with DTC P0776 (2012, NHTSA copy) (static.nhtsa.gov)
- Owner reports: CarComplaints: powertrain complaints on the Lambda-platform Saturn Outlook (carcomplaints.com)
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