GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

Definition: No right turn indicator output at the trailer connector.

1

  1. Place the turn signal switch in the Right turn position. Remove the Right trailer turn relay from the socket in Relay Center  #1.
  2. Connect a test lamp between terminal 86 in the Right trailer turn relay socket and the chassis ground.

Does the test lamp flash?

--

Go to Step 2

Go to Step 3

2

Connect a test lamp between terminal 85 and terminal 86 in the Right trailer turn relay socket.

Does the test lamp flash?

--

Go to Step 4

Go to Step 5

3

Repair the open CKT 113 (BLU) between S335 and terminal 86 in the Right trailer turn relay socket.

Is the repair complete?

--

System OK

--

4

Connect a test lamp between terminal 85 and terminal 30 in the Right trailer turn relay socket.

Does the test lamp light?

--

Go to Step 6

Go to Step 7

5

Repair the open in CKT 22, CKT 112 or CKT 650 (BLK) between G105 and terminal 85 in the Right trailer turn relay socket.

Is the repair complete?

--

System OK

--

6

  1. Connect a jumper between terminal 30 and terminal 87 in the Right trailer turn relay socket.
  2. Connect a test lamp between terminal 1 and terminal 5 in the trailer connector socket.

Does the test lamp light?

--

Go to Step 8

Go to Step 9

7

Repair the open in CKT 110 (ORN) between circuit breaker  #25 and terminal 30 in the Right trailer turn relay socket.

Is the repair complete?

--

System OK

--

8

Replace the Right trailer turn relay.

Is the repair complete?

--

System OK

--

9

Repair the open in CKT 111 or CKT 319 (YEL) between the trailer connector socket and terminal 87 in the Right trailer turn relay socket.

Is the repair complete?

--

System OK

--