News
TAC Tips Fall 2018
December 11, 2018
Thanks to our program member from: London, ON
Vehicle: 2006 Chrysler 300 5.7L
Condition: Car had multiple repairs for the brake pads, they have been replaced and the driver mentions that it seems necessary to apply more brake pedal pressure than before.
Agent recommendation: Suggest to check the ‘break in’ or ‘burnishing’ procedures when friction components are replaced. There are 3 ACDelco Tech Tips that just came out in July 2018 that discuss these procedures when new friction components are installed. They are about brake calipers/pads lubrication points, also about the procedure for burnishing the new friction components and one also for the severe duty cars.
Solution: The technician replaced the components and followed the procedures according to the document sent to him.


December 4, 2018
Thanks to our program member from: Whitby, ON
Vehicle: 2006 Jeep 3.7L
Condition: The front brakes are grabbing and become very hot, caller wants some advice.
Agent recommendation: Suggestion was made to check the movement of the pistons and the actuator rod at master cylinder for the proper end gap specified by the OEM.
Solution: The technician did the recommended procedures and replace the master cylinder which was not releasing all the pressure.


November 27, 2018
Thanks to our program member from: London, ON
Vehicle: 2006 Chrysler 300 5.7L
Condition: Car has repetition issues with brake pads, have been replaced previously and driver mentions that they seems to be necessary to apply more pressure on brake pedal as it was before.
Agent recommendation: Suggest checking for the proper procedures when brake friction components are replaced. There is 3 new ACDelco Tech Tips that just came out on July 2018 one is about the brake calipers and pads lubrication points,  the second one about the burnishing procedure for the friction components of  passenger and light truck and the third one is about burnishing the friction components on severe heavy duty vehicles (Police).
Solution: Technician replaced the brake friction components and did the procedures according to the document sent to him.


November 20, 2018
Thanks to our program member from: Brownburg-Chatham, QC
Vehicle: 2006 Volkswagen Jetta TDI  2.0L
Condition: The rear brakes are doing a knocking sound at low speed, the rotors and pads were replaced and the calipers cleaned.
Agent recommendation: Suggest to read the TSB for the lubrication of the pads and the kind of lubricant to use.
Solution: The technician followed the procedure and has reordered the pads and the vehicle is fine now.


November 13, 2018
Thanks to our program member from: Stratford, PEI
Vehicle: 2013 Ford F-150 5.0L
Condition: Rattle noise when accelerating in 2WD and when in 4WD high it doesn’t rattle.
Agent recommendation: Ask to check for vacuum leak at the front axle actuator according to OEM test procedures.
Solution: Technician found vacuum port leaking at the front axle actuator solenoid. Hoses were replaced and all ports blown with compressed air and reinstalled and truck is OK now.


November 6, 2018
Thanks to our program member from: Jonquière, QC
Vehicle: 2012 Ford Fiesta 1.6L
Condition: Car has no communication with TCM and has several communication codes in multiple modules. After replacing the TCM the engine wouldn’t start.
Agent recommendation: Check for codes again and to make sure the TCM was programmed correctly. Technician found that the TCM was replaced with a used TCM and the programming was made with a battery charger connected during the programming. Recommended to be careful with battery charger during programming and advised that not all the chargers can be used.
Solution: Technician replaced the TCM with a new one and was programmed using a second full charged battery. The car is OK now with no DTCs found.

October 30, 2018
Thanks to our program member from: Stratford, PEI
Vehicle: 2014 Chevrolet Impala 2.5L
Condition:  After replacing a dead battery, the Human Machine Interface display (Center Display) was black and no display was coming up.
Agent recommendation: Check TSB for this specific issue on HMI module according to OEM Service Information.
Solution: Technician tried to disconnect the battery again and wait for the condensers discharge. The display came back once the battery was reconnected. Technician checked for all functions and car was OK.


October 23, 2018
Thanks to our program member from: Thurso, QC
Vehicle: 2003 Buick Rendez-Vous 3.4L
Condition: Truck has an erratic fuel gauge operation. It wasn’t moving up at all and after replacing the fuel level sensor in the tank, it shows at time overfull and finally goes down after several key cycles.
Agent recommendation: Check the connectors and especially the one under the rear seat C305 since this is a known issue for this specific model.
Solution: Technician found that C305 being corroded and was able to replace the terminals and reinstall the connector with dielectric grease to protect from water ingress


October 16, 2018
Thanks to our program member from: Timmins, ON
Vehicle: 2012 Nissan Cube 1.8L
Condition: Vehicle gets DTC for lean mixture, P0171.
Agent recommendation: Suggest checking for vacuum leaks and exhaust leaks and for dirt on MAF.
Solution: Technician found that when engine running it has only 31psi of fuel pressure and specifications shows 51psi. Fuel pump was replaced and car runs OK now with no DTC.


October 9, 2018
Thanks to our program member from: Thetford Mines, QC
Vehicle: 2009 Mazda 6 2.5L
Condition: The vehicle will not start with the push start button. The warning symbol of the theft system comes on. All of the transmitter batteries are good and the doors are opening correctly.
Agent recommendation: Recommended reading the TSB that was sent to the technician about the exact situation that recommends to replace keyless control module.
Solution: The technician followed the TSB procedures and car is now working adequately.


October 2, 2018
Thanks to our program member from: Calgary, AB
Vehicle: 2007 Chevrolet Impala 2.5L
Condition:  Car came in shop with brakes metal to metal, after a road test the technician found that the front brakes were not releasing fast enough, the brakes were bled after performing brake service. The brake pedal is not spongy and not too hard. The tech thinks that the front calipers are the cause.
Agent recommendation: Agent suggests to check the pads for looseness and also the calipers and hubs.
Solution: The technician reordered the pads and rotors and the vehicle runs fine now.


September 25, 2018
Thanks to our program member from: Thurso, QC
Vehicle: 1991 Toyota MR2 2.2L
Condition: Car won’t start and has no sparks or injectors pulse. The ignition module was replaced at another shop.
Agent recommendation: Check for the proper engine configuration since the 2.0L and 2.2L are getting different ignition module configuration. Checked with technician and found that the replacement ignition module was not grounded on the body, since the previous technician had broken the bolts in the module location and was tied up with tie wraps.
Solution: Technician repaired the broken bolts and reinstalled the module with good contact to the body and the engine started and runs OK now.