Ron Ananian, The Car Doctor - October 18, 2025 - Hour 1 - GM Transmission Shudder, Toyota ECM Failures & the Truth About ‘Lifetime’ Fluid - (855)560-9900 24/7 Hotline
This episode demystifies Technical Service Bulletins (TSBs) and why they’re not recalls. Ron breaks down GM’s 23-NA-072 low-speed TCC shudder—what “ATF degradation” really means and why a full transmission fluid exchange matters. Then: the Toyota RAV4 P0755 shift-solenoid fault and why many were cured with an updated OE ECM, not a transmission. Plus a quick diagnostic for a 1994 Chevy Blazer speedometer that dies on bumps (VSS → DRAC → cluster, use the cruise test). Practical, no-nonsense diagnostics that save parts—and wallets.
- Grab your Car Doctor gear – T-shirts & more at CarDoctorShow.com
-
Follow the wrench – Instagram @ronananian for shop life & behind-the-scenes
-
Watch & learn – Auto repair tips & videos on our YouTube Channel
-
Got a car question? Call the Car Doctor Hotline 24/7 – (855) 560-9900
-
Join the conversation LIVE – Saturdays 2–4 PM Eastern
See omnystudio.com/listener for privacy information.
More description
This episode demystifies Technical Service Bulletins (TSBs) and why they’re not recalls. Ron breaks down GM’s 23-NA-072 low-speed TCC shudder—what “ATF degradation” really means and why a full transmission fluid exchange matters. Then: the Toyota RAV4 P0755 shift-solenoid fault and why many were cured with an updated OE ECM, not a transmission. Plus a quick diagnostic for a 1994 Chevy Blazer speedometer that dies on bumps (VSS → DRAC → cluster, use the cruise test). Practical, no-nonsense diagnostics that save parts—and wallets.
- Grab your Car Doctor gear – T-shirts & more at CarDoctorShow.com
-
Follow the wrench – Instagram @ronananian for shop life & behind-the-scenes
-
Watch & learn – Auto repair tips & videos on our YouTube Channel
-
Got a car question? Call the Car Doctor Hotline 24/7 – (855) 560-9900
-
Join the conversation LIVE – Saturdays 2–4 PM Eastern
See omnystudio.com/listener for privacy information.
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