avalonandl
Full Access Member
I had the plug/wires changd at 134k miles (they were original) and my Highway mpg went up at least 1 mpg.....
Congrats- I picked up my Denali at 134k miles. I have replaced the air compressor.... ugh. But dealer wanted 900 bux. I did it for 290.
Congrats- I picked up my Denali at 134k miles. I have replaced the air compressor.... ugh. But dealer wanted 900 bux. I did it for 290.