Gain extra benefits by becoming a Supporting Member Click here find out how!
Classic Performance Products Classic Parts
Ciadella InteriorsAmerican Auto Wire Classic Industries
Chevs of the 40sDanchuk Catalog
Hellwig Products IncPerformance Rod & CustomEcklers AutoMotive
Nu-Relics Power Windows
Impala Bob's Bob's Chevy Trucks Bob's Chevelle Parts Bob's Classic Chevy

Username Post: Are Chevy trucks with over 100k worth buying?        (Topic#283183)
Forum Newbie
Posts: 3

Reg: 06-25-12
06-26-12 12:54 AM - Post#2241394    

So I am in the market to buy a used Avalanche.

I was brought up to avoid cars/trucks with over 100k and used to not see vehicles at "reputable" dealers with high mileage. As I am looking now I see tons of dealer selling trucks with over 100k. I even see new Chevy dealers selling them with over 125k. My old school upbringing says at 125k, its got 25k left in it. I usually go to my dad and his friends (they all are old school mechanics and service guys, think 70s and Monkey Wards), they are of the 100k is death school of thought.

So what's the deal? Are Chevy trucks with over 100k worth buying? How many miles can I really expect to get out of a truck these days (assuming well maintained)? What should I really look at if considering a higher mileage Chevy?

Posts: 55

Loc: Hayward, WI
Reg: 01-01-12
06-26-12 03:59 AM - Post#2241409    
    In response to jkent26

Good question.. when I was looking for a new/used truck, I had similar feelings, warranted or not. I kept looking until I found my current 'o5 Z71 ( back in '08) w/49,840 on it. The lower millage trucks are out there but you have to do some looking.

Posts: 28677
Age: 48
Loc: Texas
Reg: 08-01-03
06-26-12 04:18 AM - Post#2241415    
    In response to Cattoyboy

When electronic fuel injection hit the scene that pretty much did away with "100K and the engine is ready for a rebuild" because the far more accurate fuel mixture adjustments prevent fuel washing down the cylinder walls and wearing the bores & rings out so soon. Seeing anywhere from 200K to 300K out of one of these engines is not out of the question, given proper care, and some have gone considerably further.

Transmissions are another story and at 100~150K you should probably assume if the transmission hasn't already been rebuilt, with proof, that it belongs on the suspect list for things that might possibly cost you a chunk of money in the near future.

Suspension work can get expensive too but in my experience, GM fullsize vehicles from the late 80's-on tend to be good for about 200K before anything serious needs attention. An exception would be the sealed wheel bearings on the 99-up trucks (and 4x4's from about 10 years prior-up) seem to be about 100~150K and they're toast but they're fairly easy to replace and not horribly expensive.


06 Silverado ISS / 06 Silverado SS / 06 300C SRT8

Posts: 204

Loc: Parsippany, NJ
Reg: 10-08-02
06-26-12 10:52 AM - Post#2241528    
    In response to jkent26

I had a 93 Silverado that I put over 230k on, My 01 had 189K on it when I sold it to my friend. He just went over 210k, and is still going strong. My friends 95 has 205k, and only blows a little smoke on start-up.(valve seals that I'm going to replace for him soon.)

Nowadays, they last much longer with regular maint. Just my humble opinion, of course.

Super Senior Member
Posts: 13995
Loc: Baltimore, MD
Reg: 11-27-04
06-26-12 06:29 PM - Post#2241687    
    In response to wreckmech

A well maintained vehicle that hasn't been abused will last well over 200,000 miles. The old school thought of 100,000 is wrong, especially these days. 100,000 really wasn't the death knell back in the day, but people tended to stay away from cars with 100,000 plus miles. The reason was that carbuerators were not very efficient and you got more fuel washing down the cylinders and decreasing the effectiveness of the oil and caused more wear on the cylinders.

Some days it's not worth chewing through the restraints.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon

"11th Year" Silver Supporting Member
Posts: 9274
Age: 74
Loc: Venice, FL
Reg: 01-05-02
06-27-12 10:14 AM - Post#2241933    
    In response to wagonman100

  • wagonman100 Said:
A well maintained vehicle that hasn't been abused will last well over 200,000 miles. The old school thought of 100,000 is wrong, especially these days. 100,000 really wasn't the death knell back in the day, but people tended to stay away from cars with 100,000 plus miles. The reason was that carbuerators were not very efficient and you got more fuel washing down the cylinders and decreasing the effectiveness of the oil and caused more wear on the cylinders.

I think the oils are better these days also. The gas isn't though.

82 Monte Carlo SC, 355 w/Vortec heads, roller rockers, 670 Street Avenger, TRUE DUALS.
2009 Sub.5.3L LTZ 30 Gallons of gas @ $2.49/gal. bla bla bla.

phat rat 
Posts: 324

Age: 74
Loc: muskegon mi
Reg: 09-02-09
07-13-12 08:19 AM - Post#2247751    
    In response to wagonman100

Go back 50-60 years and by 100,000 mi most cars were on their last legs. As said that no longer holds true. Technology has greatly improved longevity

Dedicated Enthusiast
Posts: 7196
Age: 49
Loc: Montgomery, AL
Reg: 01-15-02
07-13-12 09:16 AM - Post#2247766    
    In response to phat rat

I bought my wife's 03 Yukon with 108,000 on it and bought the dealer warranty for $1200. In the last two years, the A/C and the tranny went. I bought the warranty in case the tranny went, the A/C trouble was a surprise. I had it repainted but the front bucket seats need to be recovered, those wear pretty aggressively. Overall, it's still a good truck.

1979 2wd K5 Blazer, 350/TH350
1985 4x4 M1009 K5 Blazer, 6.2/TH400

Posts: 362

Loc: East Texas
Reg: 02-02-06
07-13-12 12:45 PM - Post#2247843    
    In response to John

The last three company vehicles I had all went over 300k miles. The 95 and the 98 suburbans both had transmissions replaced more than once. The 01 suburban original transmission went out at 384k miles after the crew hit a deer and broke the trans cooler line. The only difference was the 01 had a factory external transmission cooler and the first two did not. I didn't put all those miles on them. They were hand-me-downs from the bosses.

The 06 silverado I drive now has 175k miles on it and has the transmission cooler. I feel certain it will be good to 300k+.

Other than rusted brake lines which is not a problem in my area, most any current GM truck with a transmission cooler and good maintenance should last 200+ fairly easily. Just my opinion.


2003 S10 Blazer 4wd (wife's)
2001 S10 Crew Cab (wife's mail truck)
1996 K1500 (mine)
1979 GMC 3/4 ton 2wd 4spd with a "Gilley's" bumper sticker, my first brand new truck.
2006 K1500 Company Truck
2006 K2500 NV4500 4.10's

steve v 
Senior Member
Posts: 988
steve v
Loc: n. cal
Reg: 05-08-04
07-15-12 07:31 AM - Post#2248357    
    In response to JaVeRo

01 has 255,000 on the ticker and still running great. Everyday driver work truck. Only thing that had to be done was a rearend rebuild due to a pinion seal leak.

04 has 115,000 and runs perfect. Its my weekend driver and I expect it to last everybit as long as the work truck seeing that it is babied compared to it. Time will tell.

Vista Cruiser 
Dedicated Enthusiast
Posts: 5514
Vista Cruiser
Loc: Erie Canal
Reg: 10-01-99
07-15-12 08:16 AM - Post#2248371    
    In response to steve v

A big reason transmissions are an issue is because most people never pay any attention to them.

Never have it flushed
never change the filter
Never even check the level

People fuss over what oil to use in their engine and never change their trans fluid.

Posts: 104
Loc: Columbus, OH
Reg: 07-11-03
08-08-12 09:18 AM - Post#2257112    
    In response to Vista Cruiser

I have owned FEW vehicles UNDER 200K. 200K is the new 100K. Many new cars come with 100K powertrain warranties. Many warranty companies will sell you a warranty to 200K or beyond. I have driven 200K trucks from the 00s that were tons smoother and nicer than 50K trucks back in the late 80s.

I look at it this way. If the vehicle makes it to 200K and doesn't look like a bomb went off inside and under it, then it was taken care ENOUGH of over the years that it will continue to provide reliable service if cared for reasonably.

Over 200K vehicles we've had include:

1975 Old Cutlass Supreme (222K, my first car, body shot but drove great)
1984 Chevy Suburban (222K when we got it, 230K+ when sold, drove fine)
1988 GMC Suburban (210K I think, drove fine)
1988 Buick Century (231K when sold, still running when subsequent owner traded at 252K)
1989 Buick Century (239K when impounded for expired tags, drove fine)
1989 Ford Escort (340-somethingK when I got it, 351K when I sold running for double what I paid for it)
1990 Pontiac Trans Sport (248K and odo broken for 3 years and roughly 40K when I got it, drove fine)
1995 Buick Century (270K when traded, drove fine)
1998 Olds Silhouette (204K to 208K, this one WAS shot, put in a used trans and rebuilt the top of motor and still scrapped it when it began knocking)
2000 Dodge Durango (172K when we got it, 224K now, plan to keep to 300K or more)

Alan Moore - TOAD Towing - Columbus, OH

14 Altima 2.5S, storm blue, 2.5L/CVT, 29K
00 Suburban LS 4x2, white, 5.3L/auto, 250K

Edited by occupant on 08-08-12 09:19 AM. Reason for edit: No reason given.

Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.792 seconds.   Total Queries: 13   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 06:01 PM