How do you change gear shift knob on 1979 trans am?

Answer 1

Please be aware that for 1979 - 1981 Pontiac Firebird/Trans Am models no unique service manuals were created. Instead, model year-specific supplement manuals were printed, which detailed new data specific to their respective model years.

In other words, because the shift knob assemblies from 1979 - 1981 models were no different from the 1978 model year, the 1979 supplement manual refers the user to the 1978 service manual.

This is why the "7B-21_pic" service manual image says it's from the "1978 PONTIAC SERVICE MANUAL".

automatic transmission

SHIFT CONTROL LEVER - R & R (Fig. 7B-23)

1. Release shift control lever by inserting a thin rule or a piece of .015" - .020" shim stock into socket along side base of shift control lever on driver's side.

2. Insert rule or stock to depth of at least one inch to unlock its bayonet retainer and lift control lever and tool up out of shift socket.

3. Install shift control lever by inserting into shift socket. Bayonet retainer will lock control lever automatically into proper position.

manual transmission

SHIFT CONTROL ASSEMBLY - REPAIR (Fig. 7B-21)

1. Remove shift lever shaft retainer and shaft from control lever housing. Then, remove shift control lever assembly from control lever housing.

2. Note position of spacers in relation to shift levers and remove spacers and shift levers from control lever housing.

3. Remove spring bracket and spring from shift control lever assembly.

4. Remove retainer and control lever pivot pin from shift control lever assembly and separate control lever bracket from shift control lever.

5. Clean and inspect all components. Replace all worn, cracked or broken parts as necessary.

NOTE: If necessary to remove reverse lever adjusting screw, grind or chisel off the weld and remove screw from control lever bracket.

6. If adjusting screw were removed, position shift control lever bracket and install pivot pin and retainer. Install reverse lever adjusting screw but do not weld at this

time.

NOTE: Lubricate all levers and spacers with water repellant-type of lubricant such as lubriplate or equivalent.

7. Install shift levers and spacers in control lever housing.

8. Install spring bracket and spring in control lever bracket and shift control lever assembly into control lever housing, making sure lever engages shift levers.

9. Install shift lever shaft and retainer.

10. If removed, adjust reverse lever adjusting screw as follows:

a. Position shift control lever in 1st-2nd shift lever and touching interlock plate spacer between 1st-2nd and reverse shift levers.

b. Hold reverse selector rod agains the adjusting screw, tightening screw to eliminate any contact of the control finger as it travels across neutral gate of interlock plate

spacer.

c. Weld screw securely in place.

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