Diagnostics guide
Signs of Transmission Problems You Shouldn't Ignore
Written by the ASE-certified technicians at Auto Repair Shops America · 15+ years of hands-on repair experience
The short answer
Common signs of transmission problems are slipping gears, delayed engagement into drive or reverse, harsh or late shifts, a burning smell, red fluid leaks and a check engine light. Early fluid service or repair can prevent a $3,000+ rebuild.
Slipping and delayed engagement
RPMs rise without acceleration, or the car hesitates when shifted into gear.
Harsh shifts and warning lights
Solenoid faults and low fluid cause harsh shifts and set codes in the TCM.
Leaks and smells
ATF is red or brown; a burning smell means overheated fluid.
Frequently Asked Questions
Can low fluid cause slipping?
Yes, and topping off plus fixing the leak can sometimes solve it.
What does a rebuild cost?
Typically $2,500–$5,000.
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