diff --git a/drivers/modem/Kconfig.cellular b/drivers/modem/Kconfig.cellular
index cc746ff9770e5..2d5a97ec76437 100644
--- a/drivers/modem/Kconfig.cellular
+++ b/drivers/modem/Kconfig.cellular
@@ -40,6 +40,15 @@ config MODEM_CELLULAR
 
 if MODEM_CELLULAR
 
+config MODEM_CELLULAR_INIT_PRIORITY
+	int "Cellular modem driver initialization priority"
+	default 79
+	range 0 99
+	help
+	  Driver initialization priority for cellular modem drivers.
+	  Defaults to less than GNSS_INIT_PRIORITY, as LTE modems often
+	  integrate a GNSS modem.
+
 config MODEM_CELLULAR_APN
 	string "Static APN"
 	default "internet"
diff --git a/drivers/modem/modem_cellular.c b/drivers/modem/modem_cellular.c
index 23ea498f8220f..5d6a3088a1ca8 100644
--- a/drivers/modem/modem_cellular.c
+++ b/drivers/modem/modem_cellular.c
@@ -2996,8 +2996,8 @@ MODEM_CHAT_SCRIPT_DEFINE(sqn_gm02s_periodic_chat_script,
                                                                                                    \
 	DEVICE_DT_INST_DEFINE(inst, modem_cellular_init, PM_DEVICE_DT_INST_GET(inst),              \
 			      &MODEM_CELLULAR_INST_NAME(data, inst),                               \
-			      &MODEM_CELLULAR_INST_NAME(config, inst), POST_KERNEL, 99,            \
-			      &modem_cellular_api);
+			      &MODEM_CELLULAR_INST_NAME(config, inst), POST_KERNEL,                \
+			      CONFIG_MODEM_CELLULAR_INIT_PRIORITY, &modem_cellular_api);
 
 #define MODEM_CELLULAR_DEVICE_QUECTEL_BG9X(inst)                                                   \
 	MODEM_DT_INST_PPP_DEFINE(inst, MODEM_CELLULAR_INST_NAME(ppp, inst), NULL, 98, 1500, 64);   \