An investigation is a step in NHTSA's review, not a finding that a defect exists. NHTSA links no recall campaign to it.
SUMMARY:GM ISSUED TWO SERVICE BULLETINS PERTAINING TO BRAKE LEAD.THEBULLETINS ADDRESS THE PROBLEM BY INSPECTION AND ADJUSTMENT OF BRAKES ANDINSPECTION AND MODIFICATION OF THE FRONT SUSPENSION.ADDITIONALLY, ANINSPECTION PROCEDURE FOR IDENTIFYING A MISLOCATED ORIFICE HOLE IN ACALIPER BRAKE LINE BOLT IS DESCRIBED.===
Make, model and model years as listed in the investigation record.
| Make | Model | Model years |
|---|---|---|
| Chevrolet | C1 | 1984 to 1986 |
| Chevrolet | C2 | 1984 to 1986 |
| Chevrolet | C3 | 1984 to 1986 |
| Chevrolet | G1 | 1984 to 1988 |
| Chevrolet | G2 | 1984 to 1988 |
| Chevrolet | G3 | 1984 to 1988 |
| Chevrolet | K1 | 1984 to 1986 |
| Chevrolet | K2 | 1984 to 1986 |
| Chevrolet | R1 | 1987 to 1988 |
| Chevrolet | R2 | 1987 to 1988 |
| Chevrolet | R3 | 1987 to 1988 |
| Chevrolet | V1 | 1987 to 1988 |
| Chevrolet | V2 | 1987 to 1988 |
| GMC | C1 | 1984 to 1986 |
| GMC | C2 | 1984 to 1986 |
| GMC | C3 | 1984 to 1986 |
| GMC | G1 | 1984 to 1988 |
| GMC | G2 | 1984 to 1988 |
| GMC | G3 | 1984 to 1988 |
| GMC | K1 | 1984 to 1986 |
| GMC | K2 | 1984 to 1986 |
| GMC | R1 | 1987 to 1988 |
| GMC | R2 | 1987 to 1988 |
| GMC | R3 | 1987 to 1988 |
| GMC | V1 | 1987 to 1988 |
| GMC | V2 | 1987 to 1988 |