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.
1990 Isuzu Impulse AutomaticFACTORY OEM SERVICE PROCEDURE
VIN Identification
NOTE:
The following is a sample VIN label.
- J A A C H 1 5 R 3 L 7 8 0 0 0 0 1
Numbers are arranged from left to right.
- 1 - Indicates Nation of Origin.
- 2 - Indicates Manufacturer.
- 3 - Indicates Type of Vehicle.
- 4 - Indicates Car Line (Car).
- 4 - Indicates GVWR & Brake System (Truck).
- 5 - Indicates Series (Car).
- 5 - Indicates Line & Chassis Type (Truck).
- 6 - Indicates Body Type (Car).
- 6 - Indicates Series (Truck).
- 7 - Indicates Restraint System (Car).
- 7 - Indicates Body Type (Truck).
- 8 - Indicates Engine Code.
- 9 - Indicates Check Digit.
- 10 - Indicates Model Year.
- 11 - Indicates Assembly Plant.
- 12 - Indicates Destination (Truck).
- 12 thru 17 - Indicates Sequence Number (Car).
- 13 thru 17 - Indicates Sequence Number (Truck).
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.