P0735 on Chevrolet: How to Diagnose & Fix
Gear 5 Incorrect Ratio
1 Chevrolet model · 1 documented issue · 1 critical · $2,200-$4,000 repair
P0735 on Chevrolet by model: symptoms, diagnosis and fix
The early (Gen 1) 6T40/6T30 automatic uses a stamped steel wave plate in the 3-5-Reverse clutch pack. On 2011-2012 builds the plate cracks and shatters without warning, instantly wiping out 3rd gear, 5th gear and reverse. The car will usually still move in 1st, 2nd, 4th and 6th, so drivers often describe it as 'it flared, then it won't back up.' Debris from the shattered plate circulates through the valve body and contaminates the whole unit. This is distinct from the well-known torque-converter shudder - it is a hard mechanical failure, not a driveability complaint. GM revised the wave plate in later 6T40 builds and the failure rate drops sharply on 2013+ cars.
Common Symptoms
- No reverse
- Loss of 3rd and 5th gear, engine revs with no drive
- Loud bang or clunk followed by limited gears
- Transmission limp mode / Service Transmission message
- Metallic debris in transmission fluid pan
How to Fix
Confirm with a scan tool for ratio-error codes plus a road test checking reverse and 3rd/5th engagement. The repair is a transmission teardown - replace the 3-5-R wave plate with the updated hardened design, replace the clutch pack, and flush or replace the valve body and cooler lines because of debris. Most shops quote a remanufactured 6T40 as the practical fix. Rebuilding with the superseded plate is the only way to keep it from recurring.
Sources for this issue (3)
P0735 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0735 mean on a Chevrolet?
P0735 stands for "Gear 5 Incorrect Ratio." This code means the Transmission/Powertrain Control Module detected an incorrect gear ratio in 5th gear. By comparing input shaft speed to output shaft speed, the module verifies each commanded gear; when the 5th-gear ratio is wrong, P0735 is stored. This typically means the transmission is slipping or failing to lock into 5th gear due to fluid, friction, or solenoid issues. Drivers may notice slipping at highway speeds, RPM flare, poor fuel economy, or limp mode. On Chevrolet it is documented across 1 model: Cruze.
What are the most common causes of P0735?
The most common causes of P0735 are: Low or degraded/burnt transmission fluid, Slipping clutch packs or worn friction elements in 5th gear, Stuck or faulty shift solenoid, Valve body / internal hydraulic leak or restriction, Worn or failing torque converter, Faulty input or output speed sensor, Internal mechanical wear inside the transmission. The specific cause varies by vehicle.
How much does it cost to fix P0735 on a Chevrolet?
Published repair estimates on Chevrolet range from $2,200 to $4,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0735 on a different make?
View P0735 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.