24/7 mobile jump start for your Pontiac, Oldsmobile, Saturn, Mercury, Plymouth, Hummer & AMC Pontiac Grand Prix (1955–2012) in Sacramento using Surge-Protected 2,500A Peak 12V Pro Booster Pack.
Engine bay (Pontiac Bonneville/G8 and Aurora have batteries under rear seat or in trunk with under-hood remote post).
Classic American cars and discontinued GM/Ford/Mopar brands often suffer from side-terminal battery bolt corrosion, VATS/Passlock security lockouts after low voltage, or vintage 6V/12V starter solenoid heat soak.
Post-boost verification of HV-to-LV DC-DC Converter (14.4V / 15.5V) output (13.8V–14.8V on 12V; 27.6V–28.4V on 24V commercial).
| Generation | Battery Group | CCA | Alternator | Starter | System Notes |
|---|---|---|---|---|---|
| Pontiac Grand Prix (2021–2026) | Group 51R / Group 47 (H5) / 12V Aux or 16V Li-Ion | 410–680 CCA / Low-Voltage Contactor Supply | HV-to-LV DC-DC Converter (14.4V / 15.5V) (14.2V–14.8V) | HV Main Contactor & Motor-Generator | Smart LIN/BSD Regulated AGM / Aux |
| Pontiac Grand Prix (2015–2020) | Group 51R / Group 47 (H5) / 12V Aux or 16V Li-Ion | 410–680 CCA / Low-Voltage Contactor Supply | HV-to-LV DC-DC Converter (14.4V / 15.5V) (14.0V–14.6V) | HV Main Contactor & Motor-Generator | High-Reserve AGM / EFB Start-Stop |
| Pontiac Grand Prix (2008–2014) | Group 51R / Group 47 (H5) / 12V Aux or 16V Li-Ion | 410–680 CCA / Low-Voltage Contactor Supply | HV-to-LV DC-DC Converter (14.4V / 15.5V) (13.8V–14.4V) | HV Main Contactor & Motor-Generator | High-CCA AGM / Lead-Acid |
| Pontiac Grand Prix (1998–2007) | Group 51R / Group 47 (H5) / 12V Aux or 16V Li-Ion | 410–680 CCA / Low-Voltage Contactor Supply | HV-to-LV DC-DC Converter (14.4V / 15.5V) (13.8V–14.2V) | HV Main Contactor & Motor-Generator | OEM Group Lead-Acid / AGM |
| Pontiac Grand Prix (1980–1997) | Group 51R / Group 47 (H5) / 12V Aux or 16V Li-Ion | 410–680 CCA / Low-Voltage Contactor Supply | HV-to-LV DC-DC Converter (14.4V / 15.5V) (13.6V–14.2V) | HV Main Contactor & Motor-Generator | Standard BCI High-CCA |
