BattleBornKyle
TYF Newbie
- Joined
- Jun 24, 2017
- Posts
- 4
- Reaction score
- 0
Hey guys/gals,
New to the forum but I've always been a chevy owner. I have an 08 Tahoe LT with the 5.3 and 65K miles. I have recently had issues with the CEL coming on and getting the messages "Service Stabilitrak and Traction Control Off". I have taken it to GM 3 times in the past month with absolutely no change. The last time it was in there for over a week.
I get the car back and the service sheet says it is having a P0300 code-Random misfire detected on cylinders 5 and 7 over 2500 times as well as P0171 Bank 1 system too lean. They replaced the spark plugs on 5 and 7 and flushed the injectors. They did a vacuum leak test with no leaks. They recommended all spark plugs be changed and all wires. I changed all the spark plugs and wires as well as Ignition Coils for cylinders 5 and 7. But nothing changed. I am also getting a rough idle on the engine.
I'm losing patience at this point and I'm hoping I didn't buy a lemon and there is a fix for this out there. I have read every forum on the internet and realize this is a huge issue with these vehicles.
One thing to note, I can almost always get the car to get the messages to appear when I am on the freeway going at highway speeds and I go down a hill or off ramp and the vehicle uses the engine for desceleration. For some reason this triggers all the warnings. I also noticed putting a can of sea foam in the fuel tank will turn the CEL off but the messages do come back a short time later. Any help would be more than appreciated. I love this car but I'm starting to think there is no fix for it, Thank you.
New to the forum but I've always been a chevy owner. I have an 08 Tahoe LT with the 5.3 and 65K miles. I have recently had issues with the CEL coming on and getting the messages "Service Stabilitrak and Traction Control Off". I have taken it to GM 3 times in the past month with absolutely no change. The last time it was in there for over a week.
I get the car back and the service sheet says it is having a P0300 code-Random misfire detected on cylinders 5 and 7 over 2500 times as well as P0171 Bank 1 system too lean. They replaced the spark plugs on 5 and 7 and flushed the injectors. They did a vacuum leak test with no leaks. They recommended all spark plugs be changed and all wires. I changed all the spark plugs and wires as well as Ignition Coils for cylinders 5 and 7. But nothing changed. I am also getting a rough idle on the engine.
I'm losing patience at this point and I'm hoping I didn't buy a lemon and there is a fix for this out there. I have read every forum on the internet and realize this is a huge issue with these vehicles.
One thing to note, I can almost always get the car to get the messages to appear when I am on the freeway going at highway speeds and I go down a hill or off ramp and the vehicle uses the engine for desceleration. For some reason this triggers all the warnings. I also noticed putting a can of sea foam in the fuel tank will turn the CEL off but the messages do come back a short time later. Any help would be more than appreciated. I love this car but I'm starting to think there is no fix for it, Thank you.