1984 GMC Jimmy: common problems

Owners of the 1984 GMC Jimmy filed 5 complaints with NHTSA, most often about seats and powertrain. Details by component below, with sources.

Key figures

Owner complaints: 5
involving a crash: 1

What fails most often

1 Seats 40% of all complaints
2 Powertrain 20% of all complaints
3 Seat belts 20% of all complaints
4 Vehicle speed control 20% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Seats: 2 complaints (40% of all).
Powertrain: 1 complaints (20% of all).
Seat belts: 1 complaints (20% of all).
Vehicle speed control: 1 complaints (20% of all), 1 of them with a crash reported by the owner.

Engines and transmissions

US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.

2 L · petrol · 4 cyl
2.8 L · petrol · 6 cyl
5 L · petrol · 8 cyl
5.7 L · petrol · 8 cyl
6.2 L · diesel · 8 cyl
automatic, 3-speed
automatic, 4-speed
manual, 4-speed
manual, 5-speed

Drive: AWD

Symptoms owners describe

How many of the 5 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

seat belts2 · 40%
oil leak or consumption1 · 20%
smoke, burning smell, fire1 · 20%

Components owners complain about

Component	Owner complaints	involving a crash
Seats	2	0
Powertrain	1	0
Seat belts	1	0
Vehicle speed control	1	1

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

Was backing out of parking space slowly, suddenly the vehicle accelerated in reverse. Had foot on brakes when backing up. Hit a couple of vehicles before turning ignition off.
Vehicle speed control · crash · 1999-04-30 · NHTSA complaint #837308
The rear seatbelt will not lock down. If there was a recall on seatbelts for a 1984 jimmy 4 x 4 , I would like information on seatbelts or how it can be fixed. I am scared for my childrens safety. Please let me know any information that can help. Thank you.
Seats · 1999-04-15 · NHTSA complaint #705654
Front oil seal on the transmission popped out, leaking oil which caused a fire.
Powertrain · 1999-03-02 · NHTSA complaint #835403

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

19961
19993
20001

Comparison

By complaint count this model year ranks 14,282 of 36,656 model years in the NHTSA data (top 39% most complained about).

On average one model year of the Jimmy has 119 complaints (23 years in the data). This year has 5, below average.

What to check before buying

Seats. Occupant sensor, power adjustment, seat mounts.
Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Seat belts. Belt pretensioners after airbag deployment, SRS codes.
Vehicle speed control. Accelerator pedal, cruise control, throttle codes.

Other years of this model

Questions and answers

What are the most common problems with the 1984 GMC Jimmy?

Owner complaints to NHTSA most often mention: seats, powertrain, seat belts. Total complaints: 5. The most frequent symptoms in complaint texts: seat belts (40%), oil leak or consumption (20%), smoke, burning smell, fire (20%).

How many service bulletins (TSB) were issued for the 1984 GMC Jimmy?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 1984 GMC Jimmy from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 1984 models

GMC Suburban 1984

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.