Description:

GM 3977775 — RETAINER

Group 8.021 — Hardware: Clips, Retainers, Small Fasteners

Era: 1969–1972 GM (3977xxx block)

This is a universal GM retainer clip used across multiple assemblies — brackets, shields, linkages, and small hardware mounts. GM used the 3977xxx numbering block heavily during the late 1960s and early 1970s for service hardware.

This is the kind of part that appears in:

• Engine compartment brackets

• Transmission linkage shields

• Under‑dash harness retainers

• Heater/AC control brackets

• Steering column hardware

• Misc. body/interior mounting points

GM often reused retainers across divisions, so the fitment is broad.

🚗 FITMENT CHART — GM 3977775

(Hardware retainers don’t have “model‑specific” fitment like mechanical parts, but here’s the correct usage family.)

CHEVROLET (1969–1972)

• Camaro

• Chevelle / Malibu

• Nova

• Impala / Bel Air / Biscayne

• Corvette

• C/K Trucks

• Suburban

• Vans

PONTIAC (1969–1972)

• GTO / LeMans

• Firebird

• Catalina / Bonneville

OLDSMOBILE (1969–1972)

• Cutlass / 442

• Delta 88

• Toronado

BUICK (1969–1972)

• Skylark / GS

• LeSabre / Electra

COMMON APPLICATIONS

• Bracket retainers

• Shield retainers

• Harness clips

• Column/under‑dash hardware

• Engine bay small‑parts retainers

This is a universal GM hardware retainer, not a model‑specific part.