Question

1999 Chevrolet Blazer 4.3L, how do I fix the problem code P1345?

Answer 1

Hi there,

The following can cause this code and must be checked.

Check the following items:

• A loose CMP sensor causing a variance in the sensor signal
• Excessive free play in the timing chain and gear assembly
• Incorrectly installed distributor - tooth off in either advance or retard positions
• A loose distributor rotor on the distributor shaft
• A loose or missing distributor hold down bolt

An intermittent may be caused by any of the following conditions:

• A poor connection
• Rubbed through wire insulation
• A broken wire inside the insulation

Answer 2

P1345 Chevrolet Code - Crankshaft Position-Camshaft Position Correlation
Read more: https://www.autocodes.com/p1345_chevrolet.html