P0019 on GMC: How to Diagnose & Fix
Crankshaft/Camshaft Position Correlation - Bank 2 Sensor B
1 GMC model · 1 documented issue · 1 critical
P0019 on GMC by model: symptoms, diagnosis and fix
GM bulletin 12-06-01-009D covers 2007-2012 GMC Acadia vehicles with 3.6L High Feature V6 engines (RPO LY7 or LLT) and timing-chain correlation DTCs P0008, P0009, P0016, P0017, P0018 or P0019.
Common Symptoms
- Check-engine light
- Camshaft-to-crankshaft correlation DTC
How to Fix
Complete the GM diagnostic procedure before ordering parts. When a stretched timing chain is confirmed, use the applicable GM timing-chain kit. The bulletin says guides, sprockets, actuators and the crank gear should not be replaced automatically unless separately worn or diagnosed.
Sources for this issue (1)
P0019 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 P0019 mean on a GMC?
P0019 stands for "Crankshaft/Camshaft Position Correlation - Bank 2 Sensor B." This code means the engine computer detected that the crankshaft and camshaft positions on bank 2 (sensor B, typically the exhaust camshaft) are out of their expected correlation — in other words, the cam and crank timing don't line up correctly. The computer compares the crankshaft and camshaft position sensor signals to verify valve timing, which is often controlled by a variable valve timing (VVT) actuator. A correlation error points to mistimed valve events, frequently from oil-flow or VVT issues, a stretched timing chain, or sensor faults. You may notice rough idle, reduced power, poor fuel economy, or a check-engine light, and ignoring it can risk engine damage. On GMC it is documented across 1 model: Acadia.
What are the most common causes of P0019?
The most common causes of P0019 are: Stretched or worn timing chain (and worn guides/tensioner), Faulty variable valve timing (VVT) actuator/solenoid (Bank 2), Low oil level or dirty/sludged oil restricting VVT flow, Faulty camshaft or crankshaft position sensor, Clogged VVT oil control valve screen, Damaged sensor wiring or connector, Jumped/misaligned timing during prior service. The specific cause varies by vehicle.
How much does it cost to fix P0019 on a GMC?
Repair costs vary widely with the root cause and GMC model; each issue on this page carries its own estimate where one is published.
Looking for P0019 on a different make?
View P0019 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.