2002 Pontiac Grand Prix Cruise Control

SCREWYNEWY

MEMBER
2002 PONTIAC GRAND PRIX
6 CYL
FWD
AUTOMATIC
125,000 MILES

Cruise quit working one day. Checked the fuse and it was ok. Took it to the shop and was told I need a new cruise control module. First off, where is this module located and secondly, can a wannabe shade tree mechanic handle replacing this? They wanted $359 for the module and another $100 to install. Please help.

1 Reply

MERLIN2021

MECHANIC
17,250 POSTS

CRUISE CONTROL INOPERATIVE/MALFUNCTIONING Diagnostic Aids Conditions for Enabling Cruise Control � � � When vehicle speed is more than 40 km/h (25 mph) � � � When PARK, REVERSE, NEUTRAL, or 1st gear is not indicated. � � � When an over/undercharged battery condition does not exist. � � � With normal engine RPM. IMPORTANT: Perform the following in order to avoid misdiagnosis. � � � Inspect for proper operation of brake lamps. � � � Inspect throttle linkage for mechanical binding which could cause the system to malfunction. � � � Inspect cruise control cable adjustment, should have minimum slack. � � � Inspect for stored Diagnostic Trouble Codes (DTCs) in the PCM. � � � EMI on the speed sensor signal circuit may cause erratic cruise control operation. Module is 2nd diagram with part 2 pointing to it.