1988 introduced us to the all-new GM truck we now know as the OBS. These models introduced a dramatic shift from the boxy styling of earlier trucks to a more aerodynamic, modern design. Rounded lines, flush headlights, and integrated bumpers gave them a sleek look for the late ’80s, while still emphasizing rugged utility. Durable yet comfortable, these trucks struck a balance between workhorse and daily driver. Today, the 1988–91 Chevy trucks are remembered as versatile, dependable pickups that set the stage for the modern truck era.
The RTX series is the latest from Dakota Digital, focused on retaining that stock look without sacrificing the late-model features you love. Every effort has been put forth to incorporate OEM design elements regarding the layout, face styling and indicators. A casual glance may dismiss these as original equipment, but once you hit the switch and the LED backlighting comes on in your favorite color scheme, all doubts will be removed.
Starting from scratch, CNC machined housings are filled with electronics designed and built in-house, helping Dakota Digital once again raise the bar for aftermarket instrumentation. The high-definition TFT message centers can be fully configured to display just about any piece of information needed. As you’ve come to expect from Dakota Digital, the RTX series utilizes a central control box to make installation and setup as easy as possible. Click the tabs below for a more in-depth look at the RTX series!
*Bezel not included, shown for visual/presentation purposes.
System uses OEM bezel(Bezel shown for representation purposes only).
More Information
year make model
1988-91 Chevy/GMC Truck/SUV
Manufacturer
DAKOTA DIGITAL
More Info
ANALOG GAUGES
Speedometer · 0–120 MPH (optional metric version 0–200 kmh)
Tachometer · 0–8,000 RPM
Oil Pressure · 0–80 psi
Water Temperature · 100–260ºF (optional metric version 40–120ºC)
Fuel Level · E, 1/4, 1/2, 3/4, F
Voltmeter · 9–17 VDC
DIGITAL MESSAGE CENTERS
Odometer (One time user settable, Million Mile)
Dual (A/B) Trip Meter · 0–9,999.9
Clock · 12 hour
Estimated Range / Miles to Empty
0–60 MPH Timer (0–100 kmh)
1/4 and 1/8 mile time & end speed (trap speed)
High speed & RPM recall
INDICATORS
Turn Signals (Left/Right), High Beam, Check Engine
Parking Brake, Cruise Control (On/Engaged), Gear Position*
4x4, Wait to Start, Two Auxiliary Inputs (user-programmable)
Red LED indicators built into gauge sweeps*
*Not all OEM functions replaced; unused indicators may be repurposed.
LIGHTING TECHNOLOGY
30+ user-selectable color options
Independent control of needle, sweep & TFT display color
Day/night brightness adjustment via headlight switch or DIM-1
12 factory themes or fully custom colors
Full RGB LED backlighting for sharp contrast & visibility
INCLUDED SENSORS
Water Temp: 1/8" NPT, ground-isolated, 10 ft harness
Oil Pressure: 1/8" NPT solid-state sensor, 10 ft harness
Speed Sensor: GM-style cable replacement, 10 ft harness*
*Approx. 5" clearance required; Tremec/Ford adaptors available
Bushings: 1/8" to 1/4", 3/8", 1/2" NPT + 12mm & 16mm x 1.5
CONTROL BOX DIMENSIONS
5.5" × 3.5" × 1"
CALIBRATION & USE
Includes 2-sided rocker switch for all settings and modes
Visual/audio feedback via TFT screen or included buzzer
Bluetooth app (iOS & Android) for setup and diagnostics
Speedometer & fuel level calibration via pushbutton or app
*GPS-50-2 eliminates need for speedometer calibration
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