08 Trailblazer 4.2
08' TB - This past weekend, my guy & I replaced the 2ndary Air Injection Check Valve, Relay, Pump & a gas cap (he did the hard work & I did the research & handed tools & held the light). Engine light cleared & stayed off for 4 days. This morning I get an engine light but a different code P0014. I was already looking to clean out the resonator & do the Berryman's & go ahead & replace the VVT within the next week. Thing is, it didn't run rough or have idle issues in the very long time that the CEL was on, gas mileage was crap but it ran great & even better with that 2ndary air pump running in my opinion for the last 3 days. Back to this morning & the new code; now it's also rough idling, loping kind of. I went to order a Dorman VVT & I'm getting 2 different part no.s that fit, difference in description being "4.2L gh" & "4.2L lk" I reached out to the parts supplier but haven't heard back yet. Any input here is MOST appreciated.