TD (1978–1979)
The TD series was introduced in April 1978, with the most major change over the TC being the introduction of "radial tuned suspension" and the option of a five-speed manual transmission.[7] The differential was replaced with a small Salisbury unit as used in the UC Torana; it used tapered Timken wheel bearings as found on all larger Holdens since mid-1971. In April 1979, the rear brakes were changed to Commodore leading-trailing rear drum assemblies.[4]
Exterior appearance was changed with the introduction of a new grille, rectangular headlights (round on base models), wheels were now 13 x 5 inches, and the rear number plate was relocated in place of the rear garnish panel. A panel van and three-door wagon were also added to the range, bodywork pressings being from the British Vauxhall Chevette/Bedford Chevanne range.[4]
Also new was the SL/E version, which used many interior options from the TC "Sandpiper" series, such as the radio/cassette, four-spoke steering wheel, timber dash inserts, velour seat trim, Cut-pile carpet, and timber (hardboard) door-trim inserts.[4] The SL/E also received the five-speed manual transmission as standard.[7]
Externally, appearance was further enhanced to include stainless steel headlight and grille surrounds, thick stainless steel door window-frame mouldings, and GM-H designed alloy wheels similar to Sunbird SL/E. Coupes and sedans had colour-coded side mirrors similar to those of Sunbird SL/E and HZ Sandman, door-trims were extended to cover the top of the doors.[4]
The SL/E was replaced by the SL/X in early 1979. It had a slightly lower equipment level, but a more competitive price. Also, a limited-edition "Gypsy" package was optional on panel vans, which included extra instrumentation and identifying decals.[4] Heated rear windscreens were now standard on all but base model sedans, panel vans, and wagons. Nylon plaid cloth inserts were available on SLs and wagons, and air conditioning was available as an optional accessory.[4]
