Should I get a 5.3 or 4.8 Tahoe when no towing expected

[cjstew4]

Looking to get a Tahoe or Yukon. For 2000 and newer models, first is mileage better with 2WD 4.8 or 5.3L engines? Second, is one engine size better for reliability? I do not plan to tow or carry full loads. Are there any years and/or engine sizes that I should avoid. Just donated my 97 Venture after is second head gasket blowout at 195k mi, but want to stick with GM. Thank you.

[j cAT]

Originally Posted by cjstew4

Looking to get a Tahoe or Yukon. For 2000 and newer models, first is mileage better with 2WD 4.8 or 5.3L engines? Second, is one engine size better for reliability? I do not plan to tow or carry full loads. Are there any years and/or engine sizes that I should avoid. Just donated my 97 Venture after is second head gasket blowout at 195k mi, but want to stick with GM. Thank you.

the tahoe usually comes with the 5.3L engine ...this is the standaed size ...also they usually have 4WD ...with 2wd you will have a little better mileage and less componets to maintain...

with these vehicles you must replace transmission fluids/filter every 30,ooo-40,000 mi...also the GM APPROVED dexcool needs replacing with distilled water only every 3-4yrs...AT THE MINIMUN OF 50% DEXCOOL ..I use 65% dexcool, this is to control corrosion ...these engines will get corroded then the leaks !

replacing the fuel filter every 30,ooo mi / and keeping the fuel tank above 1/4 at all times prevents fuel pump failures..

you should expect 17-19 mpg on hywy with the 2wd...16-18 with the 4wd..

the 2wd driverside spring usually needs replacement ...common issue ..

these are heavy vehicles you will need a 5.3L engine...unless your not gonna drive around where there are hills/mountains...you got plenty where you live !

[cjstew4]

thanks jcat for the tips. Hopefully the dexcool with do a better job than it did in my Venture when I get a Tahoe.

[iroc343]

Hold out for the 5.3, fuel mileage is the same but more power and higher resale.