evotechnik

Hi

Currently working on a C7Z with a Halltech CAI and basic bolt ons and the vehicle reports reduced engine power.

The fault codes are MAF Sensor low voltage, IAT and Humidity Sensor. Also on logging the MAF reads 0hz.

I got a new MAF sensor today and its still the same. I checked the connected and cant find a power supply coming to it like the older MAF with 5 wires.

Checked the wiring harness and nothing is damaged. I checked the fuse box in the engine compartment and at the rear but cant find MAF, 02 sensor fuses anywhere.

Can someone help me to find the fuse box location for the C7Z with LT4 ?

I opened the passenger side floor and found only a BCM and no fuse box there also.

Any help would be appreciated before i send it to the dealer.

Thanks

Dakota Slim

I had same type of issue with my 15 ZO6 but did not get reduced power message. Dealer had to reprogram engine control module. Document attached. You might have same issue.