1 EXHIBIT 23 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement Nos. 333-29719 and 333-33399 of General Instrument Corporation on Forms S-8 of our report dated June 12, 1998 appearing in this Annual Report on Form 11-K of NextLevel Systems (Puerto Rico), Inc. Savings Plan for the year ended December 31, 1997. /s/ DELOITTE & TOUCHE LLP - ----------------------------- DELOITTE & TOUCHE LLP Parsippany, New Jersey June 24, 1998