Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEAPPLICATIONENGINE/VIN BREAKDOWNMODEL IDENTIFICATIONNOTES
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Model Identification: Notes
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Notes
MODEL IDENTIFICATION
| MODEL | (1) BODYCODE | (2) ENGINE | ENGINE ID | FUEL SYSTEM | IGNITION SYSTEM | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Astro & Safari | M, L | 4.3L (L35) | W | CSI (3) | Magnetic (4) | ||||||||||
| Blazer, Bravada, Jimmy, Pickup & Sonoma | S, T | 2.2L (LN2) (5) | 4 | SFI | DIS Magnetic | ||||||||||
| Blazer, Bravada, Jimmy, Pickup & Sonoma | S, T | 4.3L (L35) | W | CSI (3) | Magnetic (4) | ||||||||||
| Blazer, Bravada, Jimmy, Pickup & Sonoma | S, T | 4.3L (LF6) | X | CSI (3) | Magnetic (4) | ||||||||||
| Commercial Van/ Motorhome (P42/P32) | P | .3L (L35) | W | CSI (3) | Magnetic (4) | ||||||||||
| Commercial Van/ Motorhome (P42/P32) | P | 5.7L (L31) | R | CSI (3) | Magnetic (4) | ||||||||||
| Commercial Van/ Motorhome (P42/P32) | P | 6.5L (L57) | Y | Diesel | N/A | ||||||||||
| Commercial Van/ Motorhome (P42/P32) | P | 6.5L (L65) | F | Turbo Diesel | N/A | ||||||||||
| Commercial Van/ Motorhome (P42/P32) | P | 7.4L (L29) | J | SFI | Magnetic (4) | ||||||||||
| Express, G-Van & Savana | G | 4.3L (L35) | W | CSI (3) | Magnetic (4) | ||||||||||
| Express, G-Van & Savana | G | 5.0L (L30) | M | CSI (3) | Magnetic (4) | ||||||||||
| Express, G-Van & Savana | G | 5.7L (L31) | R | CSI (3) | Magnetic (4) | ||||||||||
| Express, G-Van & Savana | G | 6.5L (L65) | F | Turbo Diesel | N/A | ||||||||||
| Express, G-Van & Savana | G | 7.4L (L29) | J | SFI | Magnetic (4) | ||||||||||
| Pickup & Sierra | C, K | 4.3L (L35) | W | CSI (3) | Magnetic (4) | ||||||||||
| Pickup & Sierra | C, K | 5.0L (L30) | M | CSI (3) | Magnetic (4) | ||||||||||
| Pickup & Sierra | C, K | 5.7L (L31) | R | CSI (3) | Magnetic (4) | ||||||||||
| Pickup & Sierra | C, K | 6.5L (L65) | F | Turbo Diesel | N/A | ||||||||||
| Pickup & Sierra | C, K | 6.5L (L56) | S | Turbo Diesel | N/A | ||||||||||
| Pickup & Sierra | C, K | 7.4L (L29) | J | SFI | Magnetic (4) | ||||||||||
| Silhouette,Trans Sport& Venture | U | 3.4L (LA1) | E | SFI | DIS Magnetic | ||||||||||
| Suburban | C, K | 5.7L (L31) | R | CSI (3) | Magnetic (4) | ||||||||||
| Suburban | C, K | 6.5L (L65) | F | Turbo Diesel | N/A | ||||||||||
| Suburban | C, K | 7.4L (L29) | J | SFI | Magnetic (4) | ||||||||||
| Tahoe & Yukon | C, K | 5.7L (L31) | R | CSI (3) | Magnetic (4) | ||||||||||
| Tahoe & Yukon | C, K | 6.5L (L56) | S | Turbo Diesel | N/A | ||||||||||
| Tracker | J | 1.6L (L01) | 6 | SFI | Magnetic | ||||||||||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.