P1345

Crankshaft/Camshaft Position Correlation (Bank 1)

Severity: High Ignition System GMC Specific Est. Repair: $150 - $1,200

High severity. Avoid long drives and get diagnosed as soon as possible. Flashing check engine light = stop driving if safe.

Quick Answer

P1345 means “Crankshaft/Camshaft Position Correlation (Bank 1).” Severity: High. Estimated repair cost: $150 - $1,200. Most common sign: CEL.

What Does P1345 Mean?

GM-platform code — GMC shares the same PCM logic as Chevrolet on most V6/V8 truck and SUV platforms, so this appears identically across both brand names.

Common Symptoms

CEL
Possible rough idle, hesitation, or hard starting
Rattling noise on cold start if chain-related

Possible Causes

Timing chain stretch/wear
Faulty crank or cam sensor
Sensor installed with incorrect air gap
Skipped timing (jumped chain)

How to Fix P1345 – Repair Guide

Verify timing marks/chain condition first if accompanied by a rattle or performance loss
Test both sensors
Replace faulty sensor(s)
Timing chain service if worn
Sponsored Partner

Upgrading Your Vehicle or Need Replacement Clearance?

Explore high-quality aftermarket auto parts, forged wheel spacers, and leveling kits.

Budgeting for This Repair?

A typical P1345 repair runs about $150 - $1,200. If you'd rather spread the cost over time, estimate the payment with our free sister tool: Car Finance Calculator (50-state sales tax, trade-in equity, full amortization).

Recommended OBD2 Scanners & Tools

To read and clear this code yourself, you need a reliable OBD2 scanner. Here are top-rated options:

BlueDriver Bluetooth Pro OBDII Scan Tool

Professional Bluetooth scanner with live data, enhanced diagnostics (ABS/SRS) and repair reports. Works with iPhone & Android. No subscription fee.

$70 - $120
Check Price on Amazon →

ANCEL AD310 Classic Enhanced OBD2 Scanner

Best-selling handheld code reader. Read & clear engine codes, live data, freeze frame. No phone required. Highly rated for beginners.

$25 - $40
Check Price on Amazon →

FIXD Bluetooth OBD2 Scanner

Simple plug-and-play sensor that explains codes in plain English via free app. Ideal for first-time users.

$35 - $60
Check Price on Amazon →

As an Amazon Associate we earn from qualifying purchases. This does not affect the price you pay.

Disclaimer: Information is for educational reference only and does not replace professional diagnosis. Actual causes and costs vary by vehicle make, model, year and condition. Always verify with a qualified technician.