1982 CHEVROLET C10

Symptoms: hard starting when cold, rough idle and stalling, black smoke from exhaust, poor fuel economy, hesitation on acceleration

Fix: The Q-jet carbs on these trucks gum up from sitting and have worn throttle shafts causing vacuum leaks. Most need a full rebuild kit with new accelerator pump, jets, gaskets, and often throttle shaft bushings. Figure 3-5 hours for a proper rebuild or swap to an Edelbrock 1406 which bolts on. DIY rebuild kits run $60-100; pro rebuild is labor-intensive.

Estimated cost: $350-650

Typical onset: 120,000-180,000 mi

Symptoms: delayed engagement into gear, slipping between 1st and 2nd, harsh downshifts, no reverse or weak reverse, transmission fluid dark or burnt smelling

Fix: These transmissions are tough but worn clutch packs, hardened seals, and tired modulators are common at high mileage or from neglect. A stock rebuild with new clutches, bands, seals, and torque converter takes 8-12 hours in the truck. TH350 is easier and cheaper than TH400. Transmission mounts also sag and cause driveline vibration—replace during any major trans work.

Estimated cost: $1,800-3,200

Symptoms: fuel gauge reads empty or erratic, fuel smell around tank area, rust holes visible in tank, fuel starvation or surging, won't hold fuel

Fix: Original steel tanks rust from the inside out, especially if left sitting with old fuel. Sending units corrode and stick. Drop the tank (2-3 hours), replace with new steel or coated tank and sending unit combo. While you're in there, replace all rubber fuel lines from tank to frame—they crack and leak. Bed removal makes this job 50% easier.

Estimated cost: $450-800

Typical onset: 150,000-220,000 mi

Symptoms: blue smoke on startup, oil consumption 1 quart per 500-800 miles, ticking noise from valve train, loss of compression in one or more cylinders, poor idle quality

Fix: Pre-unleaded-optimized heads suffer from worn guides and can drop seats on high-mileage engines. A proper valve job includes guide replacement or knurling, seat recutting, new valves, springs, and seals. Takes 10-14 hours with head removal and resurfacing. Many shops recommend a full rebuild if cylinder bores are tapered beyond .005 inch.

Estimated cost: $1,200-2,200

Typical onset: 100,000+ mi

Symptoms: engine backfiring through carburetor, pinging under load, loss of power and poor fuel economy, hard starting, timing jumps around at idle

Fix: HEI distributors have worn bushings in the shaft causing timing to wander. Points-style units (if not converted) have worn cam lobes and condensers. Rebuild the HEI with new bushing kit, pickup coil, module, and cap/rotor (2-3 hours), or swap in a reman HEI for $120-180. Timing should be checked and set properly with vacuum advance functioning.

Estimated cost: $180-400

Symptoms: soft or spongy floor when stepped on, visible holes in cab corners or rocker panels, water pooling inside cab, rust bubbles under carpet, bed floor has holes or is completely gone

Fix: These trucks rot from the inside out—cab corners, rockers, floor pans, and bed floors are all prone. Not a mechanical issue but affects safety and resale. Floor pan replacement requires cab removal or cutting/welding from inside (12-20 hours depending on scope). Patch panels are available but proper metalwork is labor-intensive. Budget more for paint and bedliner after welding.

Estimated cost: $1,500-4,500

Typical onset: 80,000-150,000 mi

Symptoms: excessive play in steering wheel (more than 2 inches), wandering on highway, clunking when turning, steering feels loose or vague, truck drifts left or right

Fix: Saginaw manual steering boxes wear internally and pitman arms develop slop at the sector shaft. Rebuild kits exist but most techs swap in a reman box (3-4 hours with alignment). Check idler arm, tie rod ends, and ball joints at the same time—these wear together. Power steering boxes leak at the sector shaft seal and need similar treatment.

Estimated cost: $450-850