Suburban 1500 LT
5.3L 8-Cylinder · 242,000 mi · Model only
7.4 researched
Research covers this year, model and mileage. Items marked addressed are reported by the owner and not verified by Squeezed. This is not a substitute for a pre-purchase inspection.
2004 · ChevroletSuburban 1500 LT
What the data shows
This Suburban is a solid truck if the transmission and suspension have been refreshed. Budget about $1,500 for intake gaskets, rear main seal, and other age-related repairs in the first year. At $4,500 it’s a touch high for the mileage, but a well-maintained example could still be a good deal. Get a pre-purchase inspection focusing on rust and transmission condition.
At a Glance
What this guide surfacedmajor service items (transmission, front end) likely due or already done; need confirmation
if never rebuilt, it’s near end of typical life; $2,000+ for rebuild
moderate road salt use; inspect rear wheel wells and frame for rust
one less thing to worry about for the next 50–60k miles
Deal Score weighs the asking price against comparable listings, the title, and the repairs documented in this guide.
- Price 29% above market
- 2 major issues
Cross-referenced 5 citations across 7 findings.
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Detailed findings, 7 items
Click any card for the full breakdown, repair cost, and what to check. Items already handled by the owner show as checked.
Reflects the open findings; items the owner handled are excluded.
Costly repairs, but not urgent to verify before you buy. Price them out and use them to negotiate.
Intake Manifold Gasket Failure
On the LR3 5.3L V8, the plastic intake manifold gaskets become brittle and leak coolant externally or internally. This is very common after 100k miles, and at 242k it’s likely been done already—or is leaking now. Coolant loss leads to overheating if ignored.
Rear Main Seal Oil Leak
The one-piece rear main seal on GM LS engines is prone to leaking at high mileage. At 242k, seepage or a drip is common. It’s not an immediate failure, but the leak will worsen and the repair requires pulling the transmission.
Minor wear typical for the car’s age. Not worth negotiating over, but good to track as an owner.
4L60E Transmission – Ask About History
The 4-speed automatic in these trucks is known for failing around 150–200k miles (sun shell, 3-4 clutches). At 242k, if it’s original, it’s on borrowed time. Many owners rebuild or swap them; ask if that’s been done.
Fuel Pump Failure
The in-tank fuel pump on GMT800 trucks has a typical lifespan of 100–150k miles. At 242k, it may have been replaced once, but failure remains a possibility. A weak pump can cause hard starting, hesitation, or sudden stall.
Front Suspension Wear (Ball Joints, Tie Rods)
GMT800 front ends wear out ball joints, tie rod ends, idler arm, and pitman arm by 150k miles. At 242k, they’ve likely been replaced, but if original, the steering will feel loose and cause uneven tire wear.
Rust – Rear Wheel Wells and Frame
GMT800 Suburbans are prone to rust in the rear wheel openings, rocker panels, and frame near the rear axle. In Boise’s climate with road salt, this can be a problem. Even surface rust can become structural.
Power Window – Rear Passenger Rolls Up Automatically
The specific issue noted—rear passenger window rolling up on its own—is often caused by a faulty window switch (master or individual) or a short in the wiring. It’s common on these trucks and usually a cheap fix.
Every finding still open carries a question worth asking. Copy them as one message, already ordered by severity. Anything you have marked above drops off on its own.
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Price & negotiation
BetaBased on comparable listings and the repairs you can document. A starting point for what this car should cost.
Price breakdown
What it costs, and when
Verify now
Critical and major items to confirm first.
Possible year-one expense
Caution items with repair-cost context.
Each range is what that one item costs if it turns out to be present. Not every item will apply to this car, so they do not add up to a bill. Verify with a mechanic.
Asking is $4,500 against a typical $3,500 for this car and mileage. The work is the difference, not the sticker.
Negotiate your offer
At asking, this is about 29% above the market estimate (about $1,000). The documented repairs below are the kind of evidence buyers cite to start lower.
- Documented critical/major repairs of $1,100–$1,800 you can point to.
- Strongest items to raise first: Rear Main Seal Oil Leak, Intake Manifold Gasket Failure.
Pricing is in beta. The market estimate comes from research models and can be off by thousands on the same car, so check recent local listings before you rely on it. This is information to help you research, not a professional inspection, an appraisal, or financial advice.
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Recalls & safety
NHTSA crash-test ratings and recall data for this make, model, and year. Check recall status with your VIN before buying.
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In-person inspection
7 things to check before you buy
2 major and 5 caution findings, turned into a walkthrough for the driveway. Answers save as you go.
Before you leave: Ask the seller not to start or move the car before you arrive. A sales-ready car has usually been warmed up, and a warm engine hides the startup smoke, rattles and rough idle that the first section is built around.
Everything on this list is what you can see standing next to the car. A shop on a lift sees the rest, and a written pre-purchase inspection listing parts and labor is what a seller has to answer to. Budget roughly $100 to $150 at an ASE-certified shop.
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