Sugar Bears 2015 GMC Terrain SLE-2 2.4 AWD

[Grumpy Bear]

278,000 Mile Services

447,405 Km

 

11/18/2025

 

2015 Terrain 2.4

1K mile OCI

 

5 Quarts Mobil 1 Euro 0W40

No filter (2)

 

No longer tracking consumption. 

[Grumpy Bear]

279,000 Mile Services

 

 

12/8/2025

 

2015 Terrain 2.4

1K mile OCI nominal

905 actual

 

5 Quarts Mobil 1 Euro 5W40

No filter (3)

 

Timing cover seal now leaking enough to wet the frame but not the ground. 

0W40 improved fuel economy. 

Shorter than normal OCI as weather is play a part not in what Dizzy needs but in what I can do. Below freezing and now the next two days they are projecting rain then back to near zero until the Bears with a Superbowl. 

[OnTheReel]

Somehow, some way…this person damn near doubled your mileage on this motor…

[Grumpy Bear]

On 12/13/2025 at 6:02 PM, OnTheReel said:

Somehow, some way…this person damn near doubled your mileage on this motor…

 

I've seen a few like that. Either multiple motors OR OTR long haul delivery. Crazy length for the that transmission. Would love to interview the owner(s). Absent context, it means little. Still, not matter how it was done...hat's off. 

[OnTheReel]

Yeah, once they go to auction like that we really have no backstory. I’ve seen a few in the 300-400k range but half a million really got my attention. Even if they put a motor in it at some point (probably) they got their money’s worth outta that chassis.

[Grumpy Bear]

450,000 Kilometers! 

 

12/24/2025 Red Letter day for Dizzy.  

[customboss]

 

[garagerog]

On 12/24/2025 at 2:31 PM, customboss said:

 

2 answers stood out to me from the mechanics answering the ?, the second guy when he said "well, none really" and the last guy that responded with the Willys/Ford made flathead 4. After my Dad was discharged from the army in 1946, he and his youngest brother started farming together. They picked up a war surplus Willy's made Jeep to tow a small service trailer that they had made to haul a diesel tank, compressed air, bulk grease and assorted grease guns, tools, and what have you. This Jeep I would surmise lived a pretty tough army life as the paint was faded from the time my Dad and Uncle picked it up and the exhaust system was basically nonexistent, about a foot of the exhaust pipe remained back from the manifold where it had been jaggedly broken off, and of course a leaky radiator. Even though it was only a 6V system, I don't recall it not ever starting, only gauge we payed any attention too was the temp gauge which topped out a 212F, if it started creeping up past 160F it was time to pull out the water jug and top off the radiator. 4WD p/u's weren't all that common until the 60's and although my Dad and Uncle got tired of backing that grease wagon trailer up, it wasn't until the 80's that they could justify the cost of a used 4WD p/u that was a dedicated use "trap wagon". They ended up finding a 3/4 ton 60's era cornbinder that was pretty indestructible in it's own right which they used until their retirement in the early 90's. My second cousin restored the Jeep to it's former glory, ready to be called on by the army again.

[customboss]

2 minutes ago, garagerog said:

2 answers stood out to me from the mechanics answering the ?, the second guy when he said "well, none really" and the last guy that responded with the Willys/Ford made flathead 4. After my Dad was discharged from the army in 1946, he and his youngest brother started farming together. They picked up a war surplus Willy's made Jeep to tow a small service trailer that they had made to haul a diesel tank, compressed air, bulk grease and assorted grease guns, tools, and what have you. This Jeep I would surmise lived a pretty tough army life as the paint was faded from the time my Dad and Uncle picked it up and the exhaust system was basically nonexistent, about a foot of the exhaust pipe remained back from the manifold where it had been jaggedly broken off, and of course a leaky radiator. Even though it was only a 6V system, I don't recall it not ever starting, only gauge we payed any attention too was the temp gauge which topped out a 212F, if it started creeping up past 160F it was time to pull out the water jug and top off the radiator. 4WD p/u's weren't all that common until the 60's and although my Dad and Uncle got tired of backing that grease wagon trailer up, it wasn't until the 80's that they could justify the cost of a used 4WD p/u that was a dedicated use "trap wagon". They ended up finding a 3/4 ton 60's era cornbinder that was pretty indestructible in it's own right which they used until their retirement in the early 90's. My second cousin restored the Jeep to it's former glory, ready to be called on by the army again.

Great little engine and very smart response. 

[customboss]

On 12/24/2025 at 12:31 PM, customboss said:

 

 

[Grumpy Bear]

2/3/2026

Breaking News

 

Fuel dilution has been a long standing issue with Dizzy. We've gone through two pumps and a rash of injectors and hinted at ring seal failure. We've also torn the fuel tank vent system apart multiple times replacing and testing until there is nothing left to test or replace. Multiple plug and coil replacements. Revamped the PCV system and yet dilution persisted. There has been a curious offset in fuel trims after fill-ups since we got the Liner Logic Scan Gauge II system sorted and programed. Like the EUC pulling up to 30% fuel for ten miles or so after a fill. And yes I'd stop after the first pump auto click. Dealer has not idea, I had no idea and my independent mechanic is scratching his head. 

 

So......as I have a good grip on the amount of fuel used (Scan Gauge) I shorted a fill 2 gallons, lied to the Scan Gauge and then started filling whatever the Scan Gauge showed I used instead of filling to auto shut off. This placed the gauge on Full but started declining right away instead of consuming 2.5 gallons before coming off full. Pretty standard experience for most all cars/trucks.  

 

Guess what? Fuel trims never go past -5% and go back to zero +/- 2 with in a mile, standard purge time.

 

That tells me that filling to the auto shut off in this vehicle was filling the carbon canister and flooding the vent system, dumping raw fuel to inlet. That is a design flaw. I have more that doubled the OCI before the oil gets inky and stinky. It's also tripled time between P420 codes. 

 

Something I will make a practice with the Verano. Short filling. All of them actually. 

[Grumpy Bear]

281,463 Mile Service

 

Rotate and balance tires. A bit over my usual 5K. Weather and scheduling. But drives nice and straight. No worse for the wear. 

[Grumpy Bear]

282,000 Mile Service

453,835 Km

 

2/12/2026

 

3,000 mile OCI, 80 oz of make up oil. 1 quart/1,200 miles. 

Rotate and balance tires. Nothing more than half an ounce required. 

 

5 Quarts Mobil 1 Euro 0W40

1 Purolator filter (red box) 

Topped off Coolant. It's a winter thing. 

Wiper fluid. Brake fluid check. 

[Grumpy Bear]

285,000 Mile Service

458,663 Km

 

4/25/2026

3,000 mile OCI

3,080 actual

90 oz make up. 

 

5 Quarts Valvoline R&P 5W30

1 Purolator L15436 filter

 

4/28/2026

285,135 miles. Tire rotation. 

Edited April 28 by Grumpy Bear