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how can I tell if its bad?

Ok. I have a 99 tahoe, 4x4 4dr. I have replaced the fuel pump, fuel filter, all 4 o2 sensors, new gas cap and the SES light has come back on again. When I take it to autozone they pull the codes it comes back with a code that what they say usually means the gas cap is bad. I have replaced this...

I had it out on the highway last night what happens is when I punch it and get up to around 75mph and let off for a second then go back into it a bit is when it happens. Just spits and sputters.

OK took it to autozone they hooked it up and it came back with an EVAP leak which they said is usually a gas cap issue. Well I have a new gas cap on this thing so I done think that wouls be it. SO I took it home and went over everything looking for a vacuum leak but could find nothing.

it is on steady.

ok now I have an ses light on. I will probably take it and have it read tomorrow. I will post back and see what you all think.

The ses light is not on at all. It idles fine and never hesitates at low speeds. What is the MAF?

OK here is the deal. I have a 99 Tahoe 4x4, 5.7, with a k&n filter system, 101,000 miles on it. My hoe has a hesitation at 70 miles an hour. When I put the throttle down to pass someone it sounds like it is flooding or missing. Yesterday I changed the fuel pump, fuel filter, all 4 o2 sensors and...

Oh yeah it gets hotter than heck. I know I am glad I can read now and find the right place to post. HAHAHa

I have a 99 tahoe 4x4 LT. I just purchased it a few weeks ago. I love it, just have some little things to fix on it. I think my heater blower motor is going out but want to see what you all think. When driving or at idle with the blower on hi , low or any other setting the blower will just slow...

Um I am? This is general discussion right?

I have a 99 tahoe 4x4 LT. I just purchased it a few weeks ago. I love it, just have some little things to fix on it. I think my heater blower motor is going out but want to see what you all think. When driving or at idle with the blower on hi , low or any other setting the blower will just slow...

ok that sounds like a good idea. calipers were tight so I think I will check the areas you said. Are they easy to replace?

Hey everyone. Love the forum here. I have a 99 tahoe 4x4 everything is stock. I just replaced the front rotors and pads, also the front and rear shocks. When going over a bump I get a rattle or a clunk out of the front driverside by the tire. I thought i just did not tighten the shock enough or...