Hey guys I did a 02 lq9 with ls3 top end, g5x2 cam. Finished the swap Sunday drove the car home 5 miles. The tach gauge worked Sunday-tuesday. Then stopped working and gave a p0343 cam position sensor voltage high. The tach reads good on my scanner just doesn't read on the dash. I replaced the sensor today checked connectors and still have the problem.

 

See this: https://ls1tech.com/forums/pcm-diagn...need-help.html