Re: 03 Malibu
Welcome to the forums! We're glad to have you here!
Okay, so let's start with this. What size engine do you have in it? If it has anything similar to the Impala of that same timeframe, they were known for being unreliable. But with that many miles, I'd be sort of weary of changing the fluid. Check your dipstick and check the level and color. If it is down, I'd definitely add some extra fluid. If it's burned (smell it, ATF fluid has a distinct smell when it is new), you *could* change it but I'd definitely do so with caution.
Let me ask you this, what do you mean that it *misses*? Does it slip, hesitate? When you're at operating temperature, does it ever feel like it slams into gear or gives a big thud? When that happens, it's definitely overheating ATF fluid. My 2005 Impala was bad for that. My 2003 does it sometimes but it's rare.
But how you proceed is up to you. But whatever you do, do NOT flush the tranny, just change the fluid if you're going that route. I don't even know if I'd change the filter at this point. I'd probably recommend Valvoline MaxLife ATF fluid to replace yours with. You should change your fluid at least every 75k to 100k miles and don't believe that hype on "lifetime fluid". Lifetime fluid is lifetime of the transmission and the life isn't really as much as you'd expect it to be for such an expensive part.
2011 Chevy Malibu 1LT (LTZ) Silver Ice Metallic / Cocoa-Cashmere 2.4L
2003 Chevy Impala Base Bronzemist Metallic 3.4L - Second Daily Driver
1986 Chevy S-10 Light Blue Metallic 2.8L w/Western Isarmatic Mark III Plow - Damaged from engine fire, under repair.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2005 Chevy Impala Comfort Plus Base Light Driftwood Metallic 3.4L - Primary Driver
1994 Oldsmobile Cutlass Ciera S Light Adriatic Metallic 3.1L - Primary