Malamute
Well-known member
Ha ha ha! I'm laughing because that's such a complicated question, asked so simply.
The body is the 1998 model.
Which probably means it was assembled in 1997.
However, the engine had been replaced, perhaps a year before I purchased the van in 2017.
And the replacement engine was not new, but an AutoZone rebuild, so no tellin' how long it had been on the road before that.
I regret that I can't provide a more specific answer, even for myself!
But I'm guessing the engine has had about 50,000 miles put on it since the rebuild.
My plan is to wait until after the holidays, and then let a mechanic "refresh" the engine as needed for rain protection and gas mileage. I read that this engine should get as much as 19 mpg, but I seem to be getting only 10 mpg. I'd love to have that improved.
Theres many variables that can affect fuel mileage. I had a 93 and 95 Suburbans with the 350 motor, the 93 had more power and better fuel mileage. Same diff gears and anything else I could find, same transmissons. I noticed a difference in the timing specs, so started timing it with the older specs (whatever degrees BTC the older one spec-ed). Not sure if it ever made any significant difference or not, the transmission blew up in the 95.
What diff gear ratio (both of mine were 3.73 ratio), what weight youre dragging around in the vehicle or towing, wind profile, how the computer is set up, all can play a part in fuel mileage. Ill get the 95 back running at some point and look into if the computer can be reprogrammed to give better fuel mileage. The 93 was getting around 15-16-ish, 17 on the road once or twice. The 95 was getting 14-ish mpg pretty steady, maybe 15 on the road at best. Hook a trailer on either and it instantly plummeted to around 10 mpg.