RCBearings
Full Member
2004 Avalanche 1500 with 240k on her. Was towing my 26ft travel trailer from Colorado to Austin, TX a couple weeks ago. Just outside Killeen, I got a check engine light. Took it to Oreilly and had them read the code. P0307, Cylinder 7 misfire. So, I did the cheap thing and hoped. Replaced the coil, wire and plug. The plug I took out looked like a lump of coal. That didn't fix the rough idle or clear the CEL. Engine temps and oil pressure were still good, so I finished my tow to the RV park and check oil level warning came on. It was 5 qts low! Had put in 1qt at Oreilly. Took it to dealer in Rockdale. They said 0 compression in Cyl 7 and 90 in Cyl 2.
I know I need a new engine and dealer quoted $7300 installed. I have been reading up on these engines and came across the 4 corner steam kit. Seems under hard loads, #7 can overheat causing the ring gap to go to 0 and breaking lands on the piston. I was flogging her pretty hard so maybe that's the case.
Anything else I should look for?
I know I need a new engine and dealer quoted $7300 installed. I have been reading up on these engines and came across the 4 corner steam kit. Seems under hard loads, #7 can overheat causing the ring gap to go to 0 and breaking lands on the piston. I was flogging her pretty hard so maybe that's the case.
Anything else I should look for?
